Question: Please help 5. An e-commerce Web site claims that 7% of people who visit the site make a purchase. Based on a random sample of

Please help

5. An e-commerce Web site claims that 7% of people who visit the site make a purchase. Based on a random sample of 15 people who visited the Web site, what is the probability that three of the people will make a purchase? (7 pts) 6. According to a recent survey, the average daily rate for a luxury hotel is $231.43. Assume the daily rate follows a normal probability distribution with a standard deviation of $21.92. What is the probability that a randomly selected luxury hotel's daily rate will be more than $256? (7 pts) 7. The average number of pounds of meat a person consumes a year is 218.4 pounds. Assume the standard deviation is 25 pounds and the distribution is approximately normal. If a sample of 40 individuals is selected, find the probability that the mean of the sample will be less than 210 pounds per year. (7 pts) 8. The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a new electronic component. After sampling 25 workers assembling similar devices, the manager noticed that their average time was 16.2 minutes and the standard deviation was (14 pts) 3.6 minutes. a. Using 95% confidence find the confidence interval to estimate the population mean assembly time. b. What is the margin of error

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