QUESTION 9 Assume the cost for an automobile repair is normally distributed with a mean of $524 and a standard deviation of $149. If the lower 7% of automobile repair charges, what is your cost? a. 423.3243 O b. None of the answers is correct O c. 624.6757 Od. 744.5200 e. 303.4800

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### Question 9

Assume the cost for an automobile repair is normally distributed with a mean of $524 and a standard deviation of $149. If the lower 7% of automobile repair charges is calculated, what is your cost?

- a. 423.3243
- b. None of the answers is correct
- c. 624.6757
- d. 744.5200
- e. 303.4800

### Question 10

AARP claims the average annual expenditure for Americans age 50+ on restaurant food in 2008 was $2130. Suppose a 2018 study surveyed 50+ individuals and found an average annual expenditure on restaurant food of $1945 with a standard deviation of $800. Is there reasonable evidence to support the claim that the expenditure for Americans age 50+ on restaurant food has decreased since 2008 at α=.1?

For the hypothesis stated above, what is the decision?

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Transcribed Image Text:### Question 9 Assume the cost for an automobile repair is normally distributed with a mean of $524 and a standard deviation of $149. If the lower 7% of automobile repair charges is calculated, what is your cost? - a. 423.3243 - b. None of the answers is correct - c. 624.6757 - d. 744.5200 - e. 303.4800 ### Question 10 AARP claims the average annual expenditure for Americans age 50+ on restaurant food in 2008 was $2130. Suppose a 2018 study surveyed 50+ individuals and found an average annual expenditure on restaurant food of $1945 with a standard deviation of $800. Is there reasonable evidence to support the claim that the expenditure for Americans age 50+ on restaurant food has decreased since 2008 at α=.1? For the hypothesis stated above, what is the decision? --- Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Certainly! Below is the transcribed text suitable for an educational website:

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**Question 1:**

The cost of car repairs is normally distributed with a mean of $524 and a standard deviation of $149. If the cost for your car repair is in the 80th percentile, what is your cost?

---

**Question 2:**

The average annual expenditure for Americans age 50+ on restaurant food in 2008 was $2130. Suppose a 2018 study randomly sampled 32 Americans age 50+ and found an average expenditure on restaurant food of $1945 with a standard deviation of $800. Is there reason to believe that the average annual expenditure on restaurant food has decreased since 2008 at α = 0.1?

---

*Note: The transcription does not include any graphs or diagrams as the image provided does not contain any. If you have more information or questions, feel free to ask!*
Transcribed Image Text:Certainly! Below is the transcribed text suitable for an educational website: --- **Question 1:** The cost of car repairs is normally distributed with a mean of $524 and a standard deviation of $149. If the cost for your car repair is in the 80th percentile, what is your cost? --- **Question 2:** The average annual expenditure for Americans age 50+ on restaurant food in 2008 was $2130. Suppose a 2018 study randomly sampled 32 Americans age 50+ and found an average expenditure on restaurant food of $1945 with a standard deviation of $800. Is there reason to believe that the average annual expenditure on restaurant food has decreased since 2008 at α = 0.1? --- *Note: The transcription does not include any graphs or diagrams as the image provided does not contain any. If you have more information or questions, feel free to ask!*
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