Stats and Probabiltiy?

The director of student health at a small high school is studying how many calories students at her high school consume in a day. She takes a random sample of 10 students from the high school and records the number of calories they consume in a 24 hour period. From the sample she found the average number of... show more The director of student health at a small high school is studying how many calories students at her high school consume in a day. She takes a random sample of 10 students from the high school and records the number of calories they consume in a 24 hour period. From the sample she found the average number of calories consumed was 1873 and that the standard deviation was 330. However before she finds the confidence interval for how many calories students consume in one day she goes to the statistics teacher for advice. What should the statistics teacher's advice be?

Select all that apply.

Choose at least one answer. a. The standard devaition is not large enough to compute the confidence interval.
b.The population may not be normal, but the Central Limit Theorem applies. Thus she should compute the confidence interval as normal.
c.She can calculate the confidence interval but should use a t-distribution since it deals with an average.
d.She did not take a simple random sample of the students, thus she should not compute the confidence interval.
e.The population may not be normal, and the Central Limit Theorem does not apply. Thus she should not compute the confidence interval.
3 answers 3