Hi Can I Please Get Hep With The Following Questions Can I Also Get Help On How

Hi Can I please get hep with the following questions. Can I also get help on how to process on excel with formulas?

Confidence

1.The daily sales of Burger Baby restaurants follow the normal distribution with a standard deviation of $4000.

2.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.

 
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