4 years ago

Extra points! Please help

Mathematics

2 answers:

Murljashka [212]4 years ago

4 0

I am pretty sure both answers are B, but I am not positive.

Angelina_Jolie [31]4 years ago

3 0

The answer to question 1 is B

the answer to question 2 is B

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A department store wants to know what fraction of its customers in a certain market have store credit cards, and what their aver

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Answer:

The 98% confidence interval for the average credit card balance is

(564.04, 635.96).

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We have to calculate the 98% confidence interval on the average credit card balance.

The sample will consist of the n=30 customers that have credit card.

The sample has a mean of $600 and a standard deviation of $80.

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Then, the margin of error is:

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