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puteri [66]
3 years ago
11

Please anyone help me Several friends went out

Mathematics
1 answer:
Andrew [12]3 years ago
5 0
<h3><u>Explan</u><u>ation</u><u>:</u></h3>

Sharon offered to pay 1/3 of the total cost.

Total cost = $46

1/3 of $46 = \frac{1}{3}  \times 46 = 15.33 \: (approx.)

<h2><u>Answer</u><u>:</u></h2>

Sharon paid $15.33

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Null hypothesis: The wait time before a call is answered by a service representative is 3.3 minutes.

Alternate hypothesis: The wait time before a call is answered by a service representative is less than 3.3 minutes.

Test statistic (t) = (sample mean - population mean) ÷ sd/√n

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