Ms. Romano, a city council member, decides to develop a survey. (a) Give an example of a question she could ask on her survey. (b) How could she select a simple random sample of drivers to take her survey? (c) She gives out 220 surveys but receives only 55 completed surveys. What are the sample and population for Ms. Romano's research? (d) Of the 55 drivers who completed surveys, 11 said that they text while driving. If Ms. Romano uses only the completed surveys, what conclusion could she make about the percent of drivers in her city who text while driving?

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)

The experience c-0.25c can be used to find the cost of an item on sale for 25% off which expression beloit equivalent to c-0.25c

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?