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Posted: **Mon Nov 15, 2021 10:52 am**

: W In A Survey 26 People Were Asked How Much They Spent On Their Child S Last Birthday Gift The Results Were Roughly Be 1 (17.61 KiB) Viewed 107 times

: W In A Survey 26 People Were Asked How Much They Spent On Their Child S Last Birthday Gift The Results Were Roughly Be 2 (26.63 KiB) Viewed 107 times

w In a survey, 26 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $31 and standard deviation of $2. Find the margin of error at a 99% confidence level. Give your answer to two decimal places,

Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 36 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 14.7 and a standard deviation of 2.8. What is the 90% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).