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Ann [662]
2 years ago
10

CAN SOMEONE PLEASE HELP ME!

Mathematics
1 answer:
Grace [21]2 years ago
6 0

Answer:

A) 20 represents the amount of money saved in one month or amount saved per month. This is the slope or rate of change of the function.

B) 50 represents the amount of money already present in the account when she starts saving. This is the y-intercept of the function.

C) It will take 5 weeks for her to save $150

Step-by-step explanation:

A) 20 represents the amount of money saved in one month or amount saved per month. This is the slope or rate of change of the function.

B) 50 represents the amount of money already present in the account when she starts saving. This is the y-intercept of the function.

C) The time to reach $150

150 = 20(w) + 50

20(w) = 150 - 50

20w = 100

w = 100/20

w = 5

It will take 5 weeks

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A savings and loan association needs information concerning the checking account balances of its local customers. A random sampl
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The 99% confidence interval for the true mean checking account balance for local customers is ($439.29, $888.99).

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We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

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99% confidence interval

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The lower end of the interval is the sample mean subtracted by M. So it is 664.14 - 224.85 = $439.29

The upper end of the interval is the sample mean added to M. So it is 664.14 + 224.85 = $888.99.

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