Coffee: The National Coffee Association reported that 62% of U.S. adults drink coffee daily. A random sample of 250 U.S. adults is selected. Round your answers to at least four decimal places as needed. Part 1 of 6 (a) Find the mean LA. The mean ua is 0.62 Part 2 of 6 (b) Find the standard deviation Go. The standard deviation o is 0.0307 Part: 2 / 6 Part 3 of 6 (c) Find the probability that more than 64% of the sampled adults drink coffee daily. The probability that more than 64% of the sampled adults drink coffee daily is

Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings, not including retirement savings?" The data in the table represent the responses to the survey. Approximate the mean and standard deviation amount of savings. E Click the icon to view the frequency distribution for the amount of savings. The sample mean amount of savings is $ Frequency distribution of amount of savings (Round to the nearest dollar as needed.) The sample standard deviation is S (Round to the nearest dollar as needed.) Frequency Savings $0 $199 $200-$399 $400 $599 $600 $799 $800 $999 $1000-$1199 $1200 $1399 342 86 45 21 10 7 1 Print Done

Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 198, with a standard deviation of 39 (the units are milligrams per deciliter). A simple random sample of 106 adults is chosen. Use the TI-84 Plus calculator. Round the answers to at least four decimal places. search Part: 0/3 Part 1 of 3 (a) What is the probability that the sample mean cholesterol level is greater than 204? The probability that the sample mean cholesterol level is greater than 204 is Part: 1/3 Part 2 of 3 (b) What is the probability that the sample mean cholesterol level is between 190 and 197? The probability that the sample mean cholesterol level is between 190 and 197 is Part: 2/3 Part 3 of 3 (c) Using a cutoff of 0.05, would it be unusual for the sample mean to be less than 193? It (Choose one) Continue Ö X be unusual for the sample mean to be less than 193, since the probability is Et X 5 STREE © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Submit Assignment W TREER 6

Part d) where does the 0.675 come from?