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The owner of a local phone store wanted to determine how much customers are willing to...

The owner of a local phone store wanted to determine how much customers are willing to spend on the purchase of a new phone. In a random sample of 13 phones purchased that day, the sample mean was $493.254 and the standard deviation was $21.6007. Calculate a 90% confidence interval to estimate the average price customers are willing to pay per phone. Question 2 options: (If Possible Show on Calculator)

1) ( 482.576 , 503.932 )

2) ( 487.263 , 499.245 )

3) ( 491.472 , 495.036 )

4) ( 482.644 , 503.864 )

5) ( -482.576 , 503.932 )

math   Statistics-And-Probability   
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a 90% confidence interval to estimate the average price customers are willing to pay per phone

ans-> 1) ( 482.576 , 503.932 )

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