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kicyunya [14]
3 years ago
12

Chris and Alex are friends who have summer jobs as waiters. The distribution of Chris’s weekly tips is approximately normal with

mean $225 and standard deviation $25. Alex works at a different restaurant; the distribution of his weekly tips is approximately normal with mean $240 and standard deviation $15. Assuming their weekly tips are independent, which is the probability that Chris will make more in tips than Alex in a randomly selected week? Show your work.
(A) 0.067
(B) 0.159
(C) 0.227
(D) 0.303
(E) 0.354
Mathematics
1 answer:
Mashcka [7]3 years ago
4 0
D I’m pretty positive
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Lostsunrise [7]

1. x >= 4, because 4 is dotted, and that means that 4 is included

2. x =/ 4, the third answer is correct, because all numbers except 4 are included

3. the first number line is the correct answer, because -3 is not included

4. the second number line is the correct answer, because -1 is included

5. the second number line is the correct answer, because 6 is not included

6. the first number line is the correct answer, because 0 is included

7. the second number line is the correct answer, because all numbers except -4 are included

8. the third number line is the correct answer, because -1,5 is included

When a number is included in an interval, it should have full dot on the number line, so that's how you know.

Hope this helps!

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4 years ago
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Ok so I need the models to answer this question.

5 0
3 years ago
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5. Melanie can run around the track 9 times
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3 years ago
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A bag of pecans costs $3.84. If
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(-1) ^3

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3 years ago
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