3/14 Question 4 of 14, Step 1 of 1 Correct A professor wants to estimate how many hours per week her students study. A simple random sample of 55 students had a mean of 18 hours of studying per week. Construct a 90 % confidence interval for the mean number of hours a student studies per week. Assume that the population standard deviation is known to be 2.8 hours per week. Round to two decimal places. Answer E Tables E Keypad Keyboard Shortcuts Lower Endpoint: Upper Endpoint:
3/14 Question 4 of 14, Step 1 of 1 Correct A professor wants to estimate how many hours per week her students study. A simple random sample of 55 students had a mean of 18 hours of studying per week. Construct a 90 % confidence interval for the mean number of hours a student studies per week. Assume that the population standard deviation is known to be 2.8 hours per week. Round to two decimal places. Answer E Tables E Keypad Keyboard Shortcuts Lower Endpoint: Upper Endpoint:
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![**Lesson: 8.1 Estimating Population Means**
**Question 4 of 14, Step 1 of 1**
A professor wants to estimate how many hours per week her students study. A simple random sample of 55 students had a mean of 18 hours of studying per week. Construct a 90% confidence interval for the mean number of hours a student studies per week. Assume that the population standard deviation is known to be 2.8 hours per week. Round to two decimal places.
**Answer**
- **Lower Endpoint:** [text box for answer]
- **Upper Endpoint:** [text box for answer]
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- **Keypad**
- **Keyboard Shortcuts**
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Transcribed Image Text:**Lesson: 8.1 Estimating Population Means**
**Question 4 of 14, Step 1 of 1**
A professor wants to estimate how many hours per week her students study. A simple random sample of 55 students had a mean of 18 hours of studying per week. Construct a 90% confidence interval for the mean number of hours a student studies per week. Assume that the population standard deviation is known to be 2.8 hours per week. Round to two decimal places.
**Answer**
- **Lower Endpoint:** [text box for answer]
- **Upper Endpoint:** [text box for answer]
Buttons available:
- **Tables**
- **Keypad**
- **Keyboard Shortcuts**
**Submit Answer** [Button]
© 2021 Hawkes Learning
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