HW13.1-13.4 Score: W30 0:24 answered . Question 14 v Virginia Nevada Dist. of Columbia 43 38 39 33 36 37' 36 40 37' 33 43 45 43 45 45 44 The table gives the ages of randomly chosen people from 3 different states At a: = 0.01. determine whether there is a difference in mean ages. 1. The nulL hypothesis is Ho: '12:? #1 = #2 = #3 = #4 '3' #1 = #2 = #3 ill:- ,u,1 = #2 = #3 = #4 = #5 2. This is a right tailed test with: d.f.n= and d.f.d = 3a. The STS [to 2 decimals] is F = 3b. The P-VaLue [to 3 decimals} is: 4a. At or = 0.01, the decision is: '53:? Do not reject Ho '33:? Accept Ho '3' Reject Ho C' Accept Ha 4b. The conclusion is: C' There is sufficient evidence to conclude that the mean ages in the states are the same '33:? There is sufficient evidence to conclude that the mean ages in at least two of the states are different '33:? There is insufficient evidence to conclude that the mean ages in at least two of the states are different '33:? There is insufficient evidence to conclude that the mean ages in the states are the same . Question 'I5 v In Statistics, it is very important for you to be able to distinguish between sample statistics and population parameters. Suppose that the graph below describes a population. 19 29 39 49 59 69 .79 89 99 Find: a. The population mean ,u: b. The population standard deviation 0': Now, suppose that a random sample of size n = 10 is taken from the population above. The table below shows this sample data: 70.21 69.29 44.95 50.9 53.68 65.25 59.02 42.61 60.82 55.06 Remember that you can put the data in a list and use 1-VarStats to find the sample statistics. Find {to two decimal places}: c. The sample mean i: d. The sample standard deviation 3: Now, let's imagine that the data in this question represents the ages of people. e. If you took a census of all people in the population, what would be the average age? f. What was the average age of the ten people that were sampled