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Kobotan [32]
2 years ago
15

The management of a department store is interested in estimating the difference between the mean credit purchases of customers u

sing the store's credit card versus those customers using a national major credit card. You are given the following information.
Store's Card Major Credit Card
Sample size 64 49
Sample mean $140 $125
Population standard deviation $10 $8


A point estimate for the difference between the means is:________

a. 18
b. 265
c. 15
d. 2
Mathematics
2 answers:
Tema [17]2 years ago
7 0
The answer is b. 265
mr Goodwill [35]2 years ago
5 0

Answer:

6

Step-by-step explanation:

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fenix001 [56]
You seem to be saying that Y=4/X+SQRT X +0.2 -5X, and that x is given as 4/5.  To evaluate <span>Y=4/X+SQRT X +0.2 -5X, replace each occurrence of x with 4/5:

y = 4 / (4/5) + sqrt(4/5) + 0.2 - 5(4/5)
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Can you simplify this further?

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2 years ago
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Veseljchak [2.6K]
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3 0
2 years ago
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4 0
2 years ago
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Alenkasestr [34]

Answer:

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5 0
2 years ago
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egoroff_w [7]

Answer: 9

Step-by-step explanation:

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7 0
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