QUESTION 6 The amount of time for an oil change at a particular service station is normally distributed with a mean of 23.2 minutes and a standard deviation of 3.8 minutes. Find each value below. Round all answers to two decimal places. Type the number only; do not include units. What length of time separates the top 3% of oil change durations at this station? minutes What length of time separates the bottom 15% of oil change durations at this station? minutes What are the two lengths of time that have, between them, the middle 90% of oil change durations at this station? (You will find two values, a lower endpoint and an upper endpoint. Between these values is the middle 90% of observations for this distribution.) Lower endpoint: minutes Upper endpoint: minutes

> Question 13 19 24 29 34 39 44 49 54 59 Salmon weight (lbs) Weights of salmon are shown in the graph above. Find the following. Round to two decimals if needed. Answers of 0 and 100% are possible due to rounding. a. What percentile is a 34 pound salmon? b. Out of 55 random samples of 20 salmon, how many would you expect have sample means that exceed 41 pounds? c. Find the sample mean value representing the 5th percentile for samples of size 20 : Submit Question MacBook Air 20 F3 000 000 F4 F2 11 F8 F5 F6 F7 F9 %23 4. 6 5

Question 1 1. For the following data: 22, 25, 26, 27, 27, 29, 30, 36, 36, 44. Determine the frequency and plot the column bar. • Calculate the average, standard deviation, mode, median.

Refer to the following infectious Hepatitis statistics for Genesee County for 2007. The population of Genesee County is 436,000 people. There were 1,050 cases of Chronic Hepatitis C at the end of 2006 The number of new cases of Chronic Hepatitis C:                            355 The number of Hepatitis A cases:                                                      32 The number of cases of acute hepatitis B:                                         177                              Calculate the incidence rate of acute Hepatitis B for 2007._____________ Calculate the prevalence rate of chronic hepatitis C for 2007 ___________ Suppose all the hepatitis A cases were all associated with an outbreak. A food handler was ill and infected 19 people who ate at the restaurant (located in Genesee County) where the food handler was employed. Ten (10) secondary cases occurred as a result of being infected by someone who ate at the restaurant Calculate the attack rate for this…