Question

For the next 2 problems, I will give you a claim being investigated and either a data set representing a sample or a summary of the sample. For each, use the appropriate formula to calculate a test statistic. 3. A grocery store will refuse a shipment of produce if more than 10% of items are rotten. From a large truckload, a random sample of 500 apples finds that 48 are rotten. Calculate a test statistic to test the claim that more than 10% of the entire truck is rotten. a. .563 b. -298 c. 1.532 d. -1.134 e. .393 4. The following is a single sample of weekly grocery bills. Calculate the test statistic for testing the claim that on average, I spend more than $100 per week on groceries. 100.83 104.61 109.80 85.67 94.27 102.34 116.36 88.46 106.72 110.21 89.36 105.90 a. .563 b. -298 c. 1.532 d. .431 e. .393

Answer 1

③ How up = 0.1 WAS Hiip zool n = 500 Di x=48 ê .=.48 soo 20.096 we can As sample size is larg use a-test statistic under Ho Ti - P ANColl). z D 0.096'- 0.1 0.1Xoog 500 0.004 x 500 1 0.09 Ć 2 = so - 0 298 option is correct choice