Question 17 If Australian adult male heights follow a normal distribution N(175 cm, 10 cm) the probability that a single randomly selected male is taller than 190 cm is…

a)more than 50%

b)less than 50% but greater than 10%

c)less than 10%

d)than 1%

e)equal to 100%

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?