Conclusions from Data Assignment Record answers in a separate document. Find a 99% confidence interval for each of the following. Round to the nearest tenth if necessary. 1. x = 75, s = 10, and n = 64 2. x = 56, s = 2, and n = 50 3. x = 40, s = 3, and n = 36 Identify the random variable in each distribution, and classify it as discrete or continuous. 4. the mass of a banana 5. the number of bytes in the memory of a computer 6. the speed of a car 7. A grocery store chain has been tracking data on the number of shoppers that use coupons. The data shows that 71% of all shoppers use coupons. 18 times out of 20 these results were considered accurate to within 2.5%. What is the confidence level? 8. A sample of 250 cans of peas showed an average weight of 14 ounces with a standard deviation of 0.7 ounces. If the distribution is relatively normal, how many cans will weigh over 14.7 ounces? 9. A company owns rental properties and must pay for repairs and upkeep. If the monthly maintenance costs have an average of $3500.00 and a standard deviation of $257.00, give the range of costs the company can count on having to pay about 95% of the time. 10. The 54 students in one of several middle school classrooms were asked two questions about musical preferences: "Do you like rock?" "Do you like rap?" The responses are summarized in the table below. Like Rap Like Rock Yes No Row Totals Yes 27 6 33 No 4 17 21 Column Totals 31 23 54 Give some evidence from the table that shows an association between not liking rock and not liking rap. Does not liking rock, effect someone's likelihood of not liking rap