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A hair salon reports that on seven randomly selected weekdays, the number of customers who visited...

A hair salon reports that on seven randomly selected weekdays, the number of customers who visited the salon were 35, 30, 28, 12, 36, 16 and 50. The population standard deviation is not given to us. Construct a 90% confidence interval for the average number of customers who visit the salon on weekdays. Interpret this. Now we have been told that we can use a normal distribution with a population standard deviation of 6. Construct a 95% confidence interval for the average number of customers who visit the salon on weekdays.

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milcah answered 6 months ago
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