Please answer question 2 parts c and d 2-interval, etc)2. In a simple random sample of 125 households, the sample mean number of personal computers was1.18. Assume the population standard deviation is 0.33.a. Construct an 80% confidence interval for the mean number of personal computers. Round theanswer to at least two decimal places.age movies ade since the.5true mean lengthst ane decimal place.eb. What calculator function did you use to create this interval? (T-interval, Z-interval, etc.)c. If the sample size were 95 rather than 125, would the margin of error be larger or smaller than theresult in part (a)?Interval in terd. If the confidence levels were 99% rather than 80%, would the margin of error be larger or smallerthan the result in part (a)?3. A survey of 100 Americans found that 68% said they find it hard to buy holiday gifts that convey theirtrue feelings. How large a sample is needed to estimate the true proportion of Americans whostruggle with buying gifts within 2% with 90% confidence? (Include Units!)and their men legth is 129is actually les the thecontradict thi c

Name: Please answer question 2 parts c and d 2-interval, etc)2. In a simple
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Description: Please answer question 2 parts c and d 2-interval, etc)2. In a simple random sample of 125 households, the sample mean number of personal computers was1.18. Assume the population standard deviation is 0.33.a. Construct an 80% confidence interval for