The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 119 and standard deviation of 26 . Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher. a. Around what percentage of adults in the USA have stage 2 high blood pressure? Give your answer rounded to two decimal places. :1. b. If you sampled 2000 people, how many would you expect to have BP> 160? Give your answer to the nearest person. Note: I had a bit of an issue encoding rounded answers, so try rounding both up and down if there's an issue! c. Stage 1 high BP is specified as systolic BP between 140 and 160. What percentage of adults in the US qualify for stage 1? :l" d. Your doctor tells you you are in the 30th percentile for blood pressure among US adults. What is your systolic BP? Round to 2 decimal places. The life of a Radio Shack record player is normally distributed with a mean of 3.3 years and a standard deviation of 0.8 years. Radio Shack guarantees its record players for 2 years. Find the probability that a record player will break down during the guarantee period. 0 0.03417 0 0.05729 0 0.06302 0 0.04218 0 0.04687 0 0.05208 0 0.03796 For the past few month, my husband and I have been visting preschools in Camarillo for our 3-year-old daughter. The annual cost of preschool in Camarillo is assumed to be normally distributed with a mean of $7,763, and standard deviation of $1,016. Let X be the annual tuition of a random selected preschool in Camarillo. a. What is the distribution of X? X ~ m 11:|,D) Please show the following answers to 4 decimal places. b. If a Camarillo preschool is randomly chosen, find the probability that its annual tuition is less than 59,795. D c. If a Camarillo preschool is randomly chosen, find the probability that its annual tuition is between $6,747 and 58,271. D Please show the following answers to whole dollors. d. The mid-50% of the Camarillo preschool cost is between SI: and D. HS. 01' course, my daughter chose the most expensive one. i will hand her a bill on her 18th birthday. The annual rainfall in a certain region is approximately normally distributed with mean 41.9 inches and standard deviation 5.3 inches. Round answers to the nearest tenth of a percent. a) What percentage of years will have an annual rainfall of less than 43 inches? b) What percentage of years will have an annual rainfall of more than 39 inches? |:|% c) What percentage of years will have an annual rainfall of between 38 inches and 42 inches? l:]%