2.To test a hypothesis involving proportions, both np and n(1-p) should a) Be at least 30 b) Be equal or greater than 5 c) Lie in the range from 0 to 1 d) There are no specific conditions surrounding the values of n and p Answer= 10. The purpose of hypothesis testing is to: (a) Determine value of the sample mean. (b) Determine evidence in favor of a parameter. (c) Determine the appropriate value of test statistic. (d) Derive the standard error of the data.

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Q: snip

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Q: None

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.