AP Statistics MCQ
AP Statistics Chapter 11
Twenty-six randomly selected packages of multicolored candies were opened and the number of blue candies in each recorded. The sample mean number of blue candies was 7, and the standard deviation was 1. Which of the following is a 90% confidence interval for the mean number of blue candies per package?
Twenty-six randomly selected packages of multicolored candies were opened and the number of blue candies in each recorded. The sample mean number of blue candies was 7, and the standard deviation was 1. Which of the following is a 90% confidence interval for the mean number of blue candies per package?
Twenty-six randomly selected packages of multicolored candies were opened and the number of blue candies in each recorded. The sample mean number of blue candies was 7, and the standard deviation was 1. Which of the following is a 90% confidence interval for the mean number of blue candies per package?
(A) 7 ± 1.706 (1/v26)
(B) 7± 1.708 (1/v25)
(C) 7 ± 1.708 (1/v26)
(D) 7 ± 1.2060 (1/v26)
(E) 7 ± 2.060 (1/v25)
Answer: C
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