### Confidence interval for the daily sales at all restaurants

Assignment Help Basic Statistics
##### Reference no: EM1389569

A sample of the sales at 50 Haute Dog restaurants is taken and the sample mean is \$30,000 per day. with a sample standard deviation of \$2000. The population standard deviation is not known.

A. What is the 90% confidence interval for the daily sales at all restaurants.

B. What is the probability that the average sales are really \$32,000 or more per day? Assume that the population average is \$30,000 per day and the std. Deviation is \$2k.

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