MATLAB: An Introduction with Applications
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Author: Amos Gilat
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![### Hypothesis Testing: Textbook Prices at BC Bookstore
#### Problem Statement
Suppose that BC financial aid allots a textbook stipend by claiming that the average textbook at BC bookstore costs $89. You want to test this claim.
#### Null and Alternative Hypotheses
The null and alternative hypothesis in symbols would be:
- \( H_0: \mu = 89 \)
- \( H_1: \mu \neq 89 \)
Options for representation:
- \( H_0: p = 89 \), \( H_1: p \neq 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu > 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu \neq 89 \)
- \( H_0: p = 89 \), \( H_1: p > 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu < 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu = 0 \)
- \( H_0: p \leq 89 \), \( H_1: p > 89 \)
#### Null Hypothesis in Words
The null hypothesis in words would be:
- The average price of all textbooks from the store is $89
Selected option:
- The proportion of all textbooks from the store that are less than 89 is equal to 50%
Other options:
- The average price of all textbooks from the store is greater than $89
- The average price of all textbooks in a sample is $89
- The average price of all textbooks from the store is less than $89
#### Statistical Analysis
Based on a sample of 80 textbooks at the store, you find an average of 99.2 and a standard deviation of 10.
#### Calculation Fields
- The point estimate is: ____ (to 3 decimals)
- The 90% confidence interval (use z*) is: ____ to ____ (to 3 decimals)
#### Conclusion
Based on the results:
- [ ] Reject the null hypothesis
- [ ] Fail to reject the null hypothesis
Once you have completed your analysis, click the "Submit Question" button to submit your answers.](https://content.bartleby.com/qna-images/question/010d10ea-7975-4510-a7a7-5e4f696daa17/2f185ba4-0c54-4354-8d21-75e362ea9c6c/3y1uvk_processed.png)
Transcribed Image Text:### Hypothesis Testing: Textbook Prices at BC Bookstore
#### Problem Statement
Suppose that BC financial aid allots a textbook stipend by claiming that the average textbook at BC bookstore costs $89. You want to test this claim.
#### Null and Alternative Hypotheses
The null and alternative hypothesis in symbols would be:
- \( H_0: \mu = 89 \)
- \( H_1: \mu \neq 89 \)
Options for representation:
- \( H_0: p = 89 \), \( H_1: p \neq 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu > 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu \neq 89 \)
- \( H_0: p = 89 \), \( H_1: p > 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu < 89 \)
- \( H_0: \mu = 89 \), \( H_1: \mu = 0 \)
- \( H_0: p \leq 89 \), \( H_1: p > 89 \)
#### Null Hypothesis in Words
The null hypothesis in words would be:
- The average price of all textbooks from the store is $89
Selected option:
- The proportion of all textbooks from the store that are less than 89 is equal to 50%
Other options:
- The average price of all textbooks from the store is greater than $89
- The average price of all textbooks in a sample is $89
- The average price of all textbooks from the store is less than $89
#### Statistical Analysis
Based on a sample of 80 textbooks at the store, you find an average of 99.2 and a standard deviation of 10.
#### Calculation Fields
- The point estimate is: ____ (to 3 decimals)
- The 90% confidence interval (use z*) is: ____ to ____ (to 3 decimals)
#### Conclusion
Based on the results:
- [ ] Reject the null hypothesis
- [ ] Fail to reject the null hypothesis
Once you have completed your analysis, click the "Submit Question" button to submit your answers.
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