Question: please explain the answer please answer in Excel ect Question 8 0/2.5 pts Purchase amounts in a store are normally distributed with a mean of

please explain the answer

please answer in Excel

please explain the answer please answer in Excel

ect Question 8 0/2.5 pts Purchase amounts in a store are normally distributed with a mean of $200 and a standard deviation of $70. If we take a sample of 100 purchase, what is the probability that the average purchase is less than 205? Provide your answer as a number between 0 and 1 with two decimals. Question 11 0/2.5 pts If, based on a sample size of 850, a political candidate finds that 480 people would vote for him in a two-person race, find the lower bound of a 95% confidence interval for his expected proportion of the vote. Provide your answer as a number between 0 and 1 with two decimals. 0.7

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