Question: 1. Assuming a normal distribution, if our sample is 100, the mean for customer satisfaction ratings is 5.9, and the standard deviation is 1.7, what

1. Assuming a normal distribution, if our sample is 100, the mean for customer satisfaction ratings is 5.9, and the standard deviation is 1.7, what is the probability of a satisfaction rating of less than 5.7?

2. Assuming a normal distribution, if the mean for customer satisfaction ratings are 5.9 and the standard deviation is 1.7, what is the probability of a satisfaction rating of more than 5.7?

3. You want to check if the sample size for the confidence calculation above was large enough. Calculate the sample size needed for a 99% confidence level if the standard deviation is 7 and the allowed error is 3. Round to a whole number as instructed .

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