To construct a confidence interval using the given confidence level, do whicheve

Question

To construct a confidence interval using the given confidence level, do whichever of the following is appropriate. (a) Find the critical value za/2. (b) find the critical value a/2. or (c) state that neither the normal nor the t distribution applies 99%: n-500; is unknown, population appears to be skewed Click here to view a table of critical t-values Click here to view page 1 of the standard normal table Choose the correct answer below , , 2:2575 B. tu/2#2586 D. 4,2-1 645 O E. Neither the normal nor the t distribution applies Click to select your answer

Explanation / Answer

here as sample size is very large ; we can asume sampling distribution of mean to be normally appeoximated

as sigma is unknown we will use t statistic for whcih critical value =2.586

option B is correct

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