can someones help me with these questions please and thank you

question 15

Sketch the graph that has an area of 0.31 under the standard normal curve and to the left of the zsoore. Then nd the associated z-soore. Click here to View page 1 of the normal distribution table. Click here to View page 2 of the normal distribution table. Choose the correct graph below. 0. Q Q 0.81 Q 0.31 Q Q J m a a z D 2 D [II The zsoore that has an area of 0.81 under the standard normal curve and to its left is (Round to two decimal places as needed} Sketch the graph that has an area of 9.79 under the standard normal curve and to the right of the z-score. Then nd the associated z-score. Click here to itriew p_age '1 of the normal distribution table. Click here to View page 2 of the normal distribution table. Choose the correct graph below. A73 A At The z-score that has an area of 0.?9 under the standard normal curve and to its right is D. [Round to two decimal places as needed} V ,e ,e ,e p 9 ) db a. Determine the percentage of finishers with times between 55 and 75 minutes. Approximately 52.22 % of finishers had times between 55 and 75 minutes. (Round to two decimal places as needed.) b. Determine the percentage of finishers with times less than 80 minutes. Approximately 85.77 % of finishers had times less than 80 minutes. (Round to two decimal places as needed.) c. Obtain and interpret the 35th percentile for the finishing times. The 35th percentile is 59.54 minutes. (Round to two decimal places as needed.) Interpret the 35th percentile. Select the correct choice below and fill in the answer box(es) to complete your choice. (Type integers or decimals rounded to two decimal places as needed.) O A. This percentile means that % of the finishing times are equal to O B. This percentile means that 35 % of the finishing times are less than 59.54 . O C. This percentile is the value that is % less than the average finishing time. O D. This percentile is the value that is % greater than the smallest finishing time. d. Find the ninth decile for the finishing times. The ninth decile is minutes. (Round to two decimal places as needed.)For a recent 10k run, the finishers are normally distributed with mean 55 minutes and standard deviation 11 minutes. Complete parts (a) through (d) below. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. a. Determine the percentage of finishers with times between 45 and 75 minutes. Approximately |% of finishers had times between 45 and 75 minutes. (Round to two decimal places as needed.)The annual ground coffee expenditures for households are approximately normally distributed with a mean of $43.11 and a standard deviation of $13.00. a. Find the probability that a household spent less than $25.00. b. Find the probability that a household spent more than $50.00. c. What proportion of the households spent between $20.00 and $30.00? d. 90% of the households spent less than what amount