Need immediately crown the dot plots below show the distances traveled by two groups of cyclists: two dot plots are labeled group a and group b. the horizontal axis is labeled distance traveled and marked from 15 to 40 at increments of 5 for both dot plots. group a shows 3 dots on 20, 6 dots on 25, 7 dots on 30, 4 dots on 35, and 3 dots at 40. group b shows 6 dots on 15, 8 dots on 20, 4 dots on 30, 3 dots on 35, and 2 dots on 40. which of the following inferences can be made using the dot plots? a. the range of each group is the same. b. there is no overlap between the data. c. group a has a higher mean than group b. d. group b has a higher mean than group a.

Amanufacturing firm has been averaging 16.8 orders per week for several years. however, during a recession, orders appeared to slow. suppose the firm’s production manager randomly samples 31 weeks and finds an average of 15.6 orders with a standard deviation of 2.3 orders. using a 0.025 significance level, test whether the mean number of orders has decreased. type the full 5 step procedure into the answer box, then for multiple choice practice, answer the following: 1. what is the name and symbol of the parameter that you are testing? 2. what is the symbol and value of the point estimate of that parameter? 3. what distribution are you using to test this parameter? 4. what is the critical value? 5. what is the test statistic value? 6. what is the p-value?