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Problem 1: A report states that on average Moroccan boys (12-18 years old) get a haircut 5.8 times ...

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3 years ago
 Problem 1: A report states that on average Moroccan boys (12-18 years old) get a haircut 5.8 times ... Problem 1:A report states that on average Moroccan boys (12-18 years old) get a haircut 5.8 times a year. An independent researcher randomly selected 20 boys (12-18 years old) and obtained these data.3   2   1   3   7   2   9   4   6   68   0   5   6   4   2   1   3   4   1At α = 0.05, can it be concluded that the average is still 5.8 visits per year? (Hint: use the t test for hypothesis testing)Problem 2:A large university reports that the mean salary of parents of an entering class is $91,600. To see how this compares to his university, a president surveys 28 randomly selected families and finds that their average income is$88,500. If the sample standard deviation is $10,000, can the president conclude that there is a difference? At α = 0.10, is he correct?(Hint: hypothesis testing when the mean is known/ z table)Because of these circumstances, I decided to give you a light final exam. Get back to me if you need any help Read 679 times 16 Replies Replies Answer verified by a subject expert bio_manbio_man wrote... Educator Top Poster Posts: 32536 Rep: 3 years ago  Sign in or Sign up in seconds to unlock everything for free Related Topics wrote... Educator 3 years ago  Quote from: med12 (3 years ago)Because of these circumstances, I decided to give you a light final exam. Get back to me if you need any helpWhat do you mean by that? wrote... Educator 3 years ago  Quote from: med12 (3 years ago)Problem 2: A large university reports that the mean salary of parents of an entering class is$91,600. To see how this compares to his university, a president surveys 28 randomly selected families and finds that their average income is $88,500. If the sample standard deviation is$10,000, can the president conclude that there is a difference? At α = 0.10, is he correct? (Hint: hypothesis testing when the mean is known/ z table)Check this out:
Amanda387 Author
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3 years ago
 thank youu
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Educator
3 years ago
 Let me know what you get for problem 2. I can confirm that problem 1 is correct, I looked my solution over, it checks out.
Amanda387 Author
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On Hiatus
3 years ago
 I still don't understand the solution of problem 1
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Educator
3 years ago
 Quote from: med12 (3 years ago) I still don't understand the solution of problem 1 Which part? Did you watch the video that came with it?
Amanda387 Author
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On Hiatus
3 years ago
 yes i did but i found it difficult
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Educator
3 years ago
 Watch it several times over, its been explained really well.In terms of the solution I provided above, which part doesn't make sense to you?
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Educator
3 years ago
Amanda387 Author
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On Hiatus
3 years ago
 now i understand thank you
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3 years ago
 thank you
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Educator
3 years ago
 Quote from: mimifa21 (3 years ago) thank you Welcome, feel free to ask more questions...
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