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प्रश्न
Choose the correct alternative:
Errors in sampling are of
पर्याय
Two types
three type
four types
five types
उत्तर
Two types
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संबंधित प्रश्न
What is null hypothesis? Give an example
Define the level of significance
What is a type I error?
What is single tailed test
A sample of 100 items, draw from a universe with mean value 4 and S.D 3, has a mean value 63.5. Is the difference in the mean significant at 0.05 level of significance?
A sample of 400 individuals is found to have a mean height of 67.47 inches. Can it be reasonably regarded as a sample from a large population with a mean height of 67.39 inches and standard deviation of 1.30 inches?
The mean breaking strength of cables supplied by a manufacturer is 1,800 with a standard deviation of 100. By a new technique in the manufacturing process it is claimed that the breaking strength of the cables has increased. In order to test this claim a sample of 50 cables is tested. It is found that the mean breaking strength is 1,850. Can you support the claim at 0.01 level of significance?
Choose the correct alternative:
Type II error is
Choose the correct alternative:
The standard error of sample mean is
The mean I.Q of a sample of 1600 children was 99. Is it likely that this was a random sample from a population with a mean I.Q 100 and standard deviation of 15? (Test at 5% level of significance)
