Seventy-seven students at the University of Virginia were asked to keep a diary of conversations with their mothers, rec

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Seventy Seven Students At The University Of Virginia Were Asked To Keep A Diary Of Conversations With Their Mothers Rec 1 (335.42 KiB) Viewed 102 times

Seventy-seven students at the University of Virginia were asked to keep a diary of conversations with their mothers, recording any lies they told during these conversations. It was reported that the mean number of lies per conversation for the random sample of 77 students was 0.5. Suppose that the standard deviation of the number of lies told for all students is known to be 0.4. Which of the following formulas would you use to construct a 95% confidence interval for the mean number of lies per conversation for all UVA students? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. 0.4 x Ta/2 = 0.5 + 2.00 (*) 77 0.4 b x + Za/2 Com 0.5 = 2.00 (A) с x + Za/2 un = 0.5 + 1.96 (04) 0.4 77 S 0.4 d x +Ta/2 Com = = 0.5 = 1.96 () 77