TD Ameritrade claims that the mean price charged for a trade of 100 shares at $50 per share is at most $40. Seventeen discount brokers we and the mean price charged for a trade of 100 shares at $50 per share was $41.18. Assume a population standard deviation of $2.86. What is the 90% confidence interval for the true mean price charged by discount brokers for a trade of 100 shares at $50 per share (in $)? Ca. (40.7095, 41.6505) Ob.(39.3938, 42.9662) OC (40.0389, 42.3211) d.(39.5638, 42.7962) e. None of the answers is correct

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**Question 16**

TD Ameritrade claims that the mean price charged for a trade of 100 shares at $50 per share is at most $40. Seventeen discount brokers were surveyed, and the mean price charged for a trade of 100 shares at $50 per share was $41.18. Assume a population standard deviation of $2.86.

What is the 90% confidence interval for the true mean price charged by discount brokers for a trade of 100 shares at $50 per share (in $)?

- a. (40.7095, 41.6505)
- b. (39.3938, 42.9662)
- c. (40.0389, 42.3211)
- d. (39.5638, 42.7962)
- e. None of the answers is correct

*Click Save and Submit to save and submit. Click Save All Answers to save all answers.*
Transcribed Image Text:**Question 16** TD Ameritrade claims that the mean price charged for a trade of 100 shares at $50 per share is at most $40. Seventeen discount brokers were surveyed, and the mean price charged for a trade of 100 shares at $50 per share was $41.18. Assume a population standard deviation of $2.86. What is the 90% confidence interval for the true mean price charged by discount brokers for a trade of 100 shares at $50 per share (in $)? - a. (40.7095, 41.6505) - b. (39.3938, 42.9662) - c. (40.0389, 42.3211) - d. (39.5638, 42.7962) - e. None of the answers is correct *Click Save and Submit to save and submit. Click Save All Answers to save all answers.*
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