Which of the following is NOT true: Select one: a. If population parameters are

Question

Which of the following is NOT true: Select one: a. If population parameters are known, a Z distribution can be used to construct a 95% confidence interval b. A 99% confidence interval is wider than a 95% confidence interval c. Increasing the sample size will result in a narrower confidence interval d. If population parameters are not known, and sample size is small, a t distribution should be used to construct a 95% confidence interval. e. A 90% confidence interval is wider than a 95% confidence interval

Explanation / Answer

option E) 90% Confidence intervel widerthan 95% confidence intervel. it is false

confidence intervel width = 2*critical value

95% > 90%

s0,option E wrong

remaining all are correct response.

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