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vovangra [49]
3 years ago
9

Rebecca and Megan are shopping at a store that sells jewelry, scarves, and purses. The cost of all the items at the store includ

e tax.
Mathematics
1 answer:
kow [346]3 years ago
7 0
If they are browsing then the answer would be $0-$300 but if they came there to get a specific thing; then it would cost $30-$50 I hoped this helped ^^
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Anastaziya [24]

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Step-by-step explanation:

The formula to find the confidence interval for mean :

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As per given , we have

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sample mean : \overline{x}=65 hours

Population standard deviation : \sigma=18 hours

z-value for 93% confidence interval: z_c=1.8119  [using z-value table]

Now, 93% confidence the mean time taken to mail products for all orders received at the office of this company :-

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Answer:

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Step-by-step explanation:

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