The test used for comparing two means when sample size is small (up to 30)

The test used for comparing two means when sample size is small (up to 30)
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 Ans. ‘T’ test
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Which test is used for comparing two means from independent samples? (A) F – test (B) t – test (C) Chi – square – test (D) Z – test

Description : Which test is used for comparing two means from independent samples? (A) F – test (B) t – test (C) Chi – square – test (D) Z – test

Last Answer : (B) t – test

A field soil sample weighing 60 g, lost12 g on over dying. What is the moisture percent on dry weight basis?

Description : A field soil sample weighing 60 g, lost12 g on over dying. What is the moisture percent on dry weight basis?

Last Answer : Ans. 25%

Where the complaint alleges a defect in the goods which cannot be determined without proper analysis or test of the goods, the sample of goods forwarded to appropriate laboratory for laboratory test. Such types of case finding report within ______days a) 30 b) 40 c) 45 d) 60

Description : Where the complaint alleges a defect in the goods which cannot be determined  without proper analysis or test of the goods, the sample of goods forwarded to  appropriate laboratory for laboratory test. Such types of case finding report within  ______days a) 30 b) 40 c) 45 d) 60

Last Answer : c) 45 

A test method of comparing two audio systems by switching inputs so that the same recording is heard in rapid succession over one given system and then the other. A. B test B. A test C. AB test D. C test

Description : A test method of comparing two audio systems by switching inputs so that the same recording is heard in rapid succession over one given system and then the other. A. B test B. A test C. AB test D. C test

Last Answer : C. AB test

When troubleshooting a lead-acid storage battery, a weak or dead cell is best detected by _________________. A. measuring and comparing all cells' specific gravity B. taking an open circuit voltage test of individual cells C. visually inspecting the electrolyte levels of each cell D. taking each cell's temperature with a calibrated mercury thermometer

Description : When troubleshooting a lead-acid storage battery, a weak or dead cell is best detected by _________________. A. measuring and comparing all cells' specific gravity B. taking an open circuit ... electrolyte levels of each cell D. taking each cell's temperature with a calibrated mercury thermometer

Last Answer : Answer: A

Taungya system means

Description : Taungya system means

Last Answer : Ans. Hill cultivation

The potential exchangeable means of satisfying human wants

Description : The potential exchangeable means of satisfying human wants

Last Answer : Ans. Wealth

‘EDUCARE’ (Latin word) means

Description : ‘EDUCARE’ (Latin word) means

Last Answer : Ans. To bringup physically or mentally.

A method in which 20 to 30 rural people or farmers are contacted in a group

Description : A method in which 20 to 30 rural people or farmers are contacted in a group

Last Answer : Ans. Group-contact

A heat treatment food material at 72°C for 15 seconds, or 63°C for 30 minutes

Description : A heat treatment food material at 72°C for 15 seconds, or 63°C for 30 minutes

Last Answer : Ans. Pasteurization

The technique of reducing the size of replication over a number of blocks at the cost of loosing some informations on same effect

Description : The technique of reducing the size of replication over a number of blocks at the cost of loosing some informations on same effect

Last Answer : Ans. Confounding Design

For a group of 10-25, people use flash cards of size

Description : For a group of 10-25, people use flash cards of size

Last Answer : Ans. 10"x12" (25 cm x 30 cm)

Mostly widely used pamphlet size

Description : Mostly widely used pamphlet size

Last Answer : Ans. 12 to 24 pages

The most common size of poster

Description : The most common size of poster

Last Answer : Ans. 50cm x 75cm

The most common pit size for fruit planting

Description : The most common pit size for fruit planting

Last Answer : Ans. 1 m × 1 m × 1 m

The irreversible change in any plant part (s) with respect to size, form, weight, volume etc.

Description : The irreversible change in any plant part (s) with respect to size, form, weight, volume etc.

Last Answer : Ans. Growth

The particle size of clay

Description : The particle size of clay

Last Answer : Ans. < 0.002

The particle size of silt

Description : The particle size of silt

Last Answer : Ans. 0.02 – 0.002

The particle size of fine sand

Description : The particle size of fine sand

Last Answer : Ans. 0.2 -0.02 mm

According to IISS, the particle size of course sand

Description : According to IISS, the particle size of course sand

Last Answer : Ans. 2 - 0.2 mm

An average size of rain drop

Description : An average size of rain drop

Last Answer : Ans. 2 mm dia

The error in which hypothesis is true but our test rejects it.

Description : The error in which hypothesis is true but our test rejects it.

Last Answer : Ans. Type I error

The hypothesis under test

Description : The hypothesis under test

Last Answer : Ans. Null hypothesis

CHI 2 test was given by

Description : CHI 2 test was given by

Last Answer : Ans. Karlpierson

To test the goodness of fit or homogeneity, we use

Description : To test the goodness of fit or homogeneity, we use

Last Answer : Ans. CHI 2 test

To test the proportions and variance, we use

Description : To test the proportions and variance, we use

Last Answer : Ans. ‘F’ test

Students t test was proposed by

Description : Students t test was proposed by

Last Answer : Ans. W.S. Gosset

Students t test is used when

Description : Students t test is used when

Last Answer : Ans. Small samples size and SD is unknown

Tetrazolium test is used for detection of

Description : Tetrazolium test is used for detection of

Last Answer : Ans. Bunchy top virus (7) Other Fruit Crops

A biochemical process or reaction taking place in a test tube (in lab)

Description : A biochemical process or reaction taking place in a test tube (in lab)

Last Answer : Ans. In vitro

At a work site, statistical quality control of concrete means (A) Measurement of risks to eliminate failures (B) Applying the theory' of probability to sample testing or inspection (C) Reduction in wastage of inspection costs (D) Reduction in costs for the removal of defects

Description : At a work site, statistical quality control of concrete means (A) Measurement of risks to eliminate failures (B) Applying the theory' of probability to sample testing or inspection (C) Reduction in wastage of inspection costs (D) Reduction in costs for the removal of defects

Last Answer : (B) Applying the theory' of probability to sample testing or inspection

The bank who credits to marginal, small and Agricultural labours

Description : The bank who credits to marginal, small and Agricultural labours

Last Answer : Ans. RRB (1975)

A small published book consisting of 24 to 48 pages

Description : A small published book consisting of 24 to 48 pages

Last Answer : Ans. Bulletin

A published material on a small paper in which there is brief information of a subject

Description : A published material on a small paper in which there is brief information of a subject

Last Answer : Ans. Leaflet

The seed of a crop variety produced by the breeder which is small in quantity is said to be

Description : The seed of a crop variety produced by the breeder which is small in quantity is said to be

Last Answer : Ans. Nucleus seed

Characters which are governed/controlled by several genes each having small individual effect.

Description : Characters which are governed/controlled by several genes each having small individual effect.

Last Answer : Ans. Polygenic Traits

What is the half life of 3 g sample of radioisotope that decay to 0.75 g in 30 days?

Description : What is the half life of 3 g sample of radioisotope that decay to 0.75 g in 30 days?

Last Answer : 15 days

For a sample rate of 40 kHz, determine the maximum analog input frequency A. 30 kHz B. 40 kHz C. 20 kHz D. 10 kHz

Description : For a sample rate of 40 kHz, determine the maximum analog input frequency A. 30 kHz B. 40 kHz C. 20 kHz D. 10 kHz

Last Answer : C. 20 kHz

An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is: (A) 0.048 (B) 0.079 (C) 0.122 (D) 0.152

Description : An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively ... air is: (A) 0.048 (B) 0.079 (C) 0.122 (D) 0.152

Last Answer : (D) 0.152

A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is (A) 1.0 g/cm2 (B) 1.5 g/cm3 (C) 2.0 g/cm3 (D) 2.5 g/cm3

Description : A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is (A) 1.0 g/cm2 (B) 1.5 g/cm3 (C) 2.0 g/cm3 (D) 2.5 g/cm3

Last Answer : (C) 2.0 g/cm3

the coefficients of volume change and compressibility of a soil sample are 6.75 × 10-2 and 3 × 10-2 respectively, the void ratio of the soil sample, is (A) 1.10 (B) 1.15 (C) 1.20 (D) 1.30

Description : the coefficients of volume change and compressibility of a soil sample are 6.75 × 10-2 and 3 × 10-2 respectively, the void ratio of the soil sample, is (A) 1.10 (B) 1.15 (C) 1.20 (D) 1.30

Last Answer : Answer: Option D

If the natural moisture content, the liquid limit and plastic limit of a soil sample are stated as 30.5%, 42.5% and 22.5% respectively, the ratio of liquidity index and plastic index, is (A) (B) ½ (C) 2 (D) 2½

Description : If the natural moisture content, the liquid limit and plastic limit of a soil sample are stated as 30.5%, 42.5% and 22.5% respectively, the ratio of liquidity index and plastic index, is (A) (B) ½ (C) 2 (D) 2½

Last Answer : Answer: Option C

A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Description : A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Last Answer : Katie earned 84,92,84,75 and 70 on her first 5 tests. What is the minimum grade Katie needs to earn on the next test to have a mean of 84?

A sample of x litres from a container having a 60 litre mixture of milk and water containing milk and water in the ratio of 2 : 3 is replaced with pure milk so that the container will have milk and water in equal proportions. What is the value of x? a) 6 litres b) 10 litres c) 30 litres d) None of these

Description : A sample of x litres from a container having a 60 litre mixture of milk and water containing milk and water in the ratio of 2 : 3 is replaced with pure milk so that the container will have milk and water in equal ... . What is the value of x? a) 6 litres b) 10 litres c) 30 litres d) None of these

Last Answer : C Another way for solving this sum is by choice The mixture of 60 litres has in it 24 litres of milk and 36 litres of water. (2 : 3 :: milk water) When you remove x litres from it, you ... have 30 litres of milk and 30 litres of water - i.e. milk and water are in equal proportion.

Pick up the correct statement from the following: (A) For determination of small colour intensities, tintometer is generally used (B) The odour of water sample is generally measured by a term called odour intensity (C) The colour of water sample may be detected by Nessler tube (D) All the above

Description : Pick up the correct statement from the following: (A) For determination of small colour intensities, tintometer is generally used (B) The odour of water sample is generally measured by a term called odour intensity (C) The colour of water sample may be detected by Nessler tube (D) All the above

Last Answer : (D) All the above

If two samples are different in size, like 20 to 60, is it a good idea to apply two sample t-tests and chi-square tests?

Description : If two samples are different in size, like 20 to 60, is it a good idea to apply two sample t-tests and chi-square tests?

Last Answer : answer:If the data is continuous (or close to it), then I would use this version of the two-sample t-test. You would not have to downsize the sample. The number of degrees of freedom is hard to ... you can use the smaller sample size, minus one, as a conservative estimate. In this case, df > 19.

Which of the following would usually require the smallest sample size because of its efficiency? a. One stage cluster sampling b. Simple random sampling c. Two stage cluster sampling d. Quota sampling

Description : Which of the following would usually require the smallest sample size because of its efficiency? a. One stage cluster sampling b. Simple random sampling c. Two stage cluster sampling d. Quota sampling

Last Answer : b. Simple random sampling

How to calculate sample size covering a percent of a population?

Description : How to calculate sample size covering a percent of a population?

Last Answer : http://www.surveysystem.com/sscalc.htm

How do i arrive at a sample size in a project?

Description : How do i arrive at a sample size in a project?

Last Answer : What is the answer ?

In a grinding operation, the limiting particle size is the size of the __________ particle in the sample. (A) Smallest (B) Largest (C) Either (A) or (B) (D) Neither (A) nor (B)

Description : In a grinding operation, the limiting particle size is the size of the __________ particle in the sample. (A) Smallest (B) Largest (C) Either (A) or (B) (D) Neither (A) nor (B)

Last Answer : (D) Neither (A) nor (B)