A filling machine is supposed to be putting 64 ounces of laundry detergent into jugs. There have been concerns that it Is overfilling the jugs. A sample of 50 jugs is taken and the mean amount in the sample is 67.5 ounces. An hypothesis test is going to be conducted to see if the sample indicates that the mean amount is significantly more than 64 ounces. Which of the following would be the correct hypotheses for this test? O Ho : X = 64 Ha : X > 67.5 O Ho : H = 64 Ha : H * 64 O HO : H = 67.5 Ha : P > 67.5 O Ho : X = 64 Ha : X * 64 O HO : H = 64 Ha : H > 64 11 1.5 points The following distributions show the finishing times (in minutes) for two runners who regularly compete in 10K races. unner 1: 55 58 53 57 54 60 runner 2: 40 63 57 72 48 55 Which runner's finishing times have the smaller standard deviation? (No calculation is required.) O can't tell runner 1 OO runner 2 they're the same 12 15 points The times to complete a task are normally distributed with a mean of 28.2 minutes and a standard deviation of 4.3 minutes. What is the probability that it would take exactly 31.4 minutes to complete the task? O 0 O .7704 ).744 O .2296 13 1.5 points Which statement Is true about & and u? O they are both statistics they are both parameters O u is a parameter and x is a statistic x is a parameter and / is a statistic