Question 5 of 12 - f 2 E View Policies Current Attempt in Progress A manufacturingrm has been averaging 18.2 orders per week for several years. However. during a recession,orders appeared to slow. Suppose the rm's production manager randomly samples 31 weeks and nds a sample mean of 15.3 orders. The population standard deviation is 2.3 orders. Test to determine whether the average number of orders is down by using a = 0.10. [Round your answer to 2 decimal places, 3.3. 1.?5.) The value of the test statistic is ' and the decision is t I J reject the null hypothesis ETEthOOk and Media fail to reject the null hypothesis 00+