Reference no: EM132581402
1) Following are the weights of 5 boxes of cookies, each of which is labeled as containing 16 ounces. Assume that the population of weights is normally distributed.
15.91, 14.41, 14.88, 16.07, 14.79
A quality control inspector wants to know whether the mean weight is actually less than 16 ounces. Compute the P-value of the test.
Write only a number as your answer. Round to four decimal places (for example: 0.3841).
2) An automotive engineer computed a least-squares regression line for predicting the gas mileage (y) in miles per gallon of a certain vehicle from its speed (x) in miles per hour. The result is y = -0.16x + 38.23.
Predict the gas mileage when the vehicle is travelling at 71 miles per hour. Round your answer to one decimal place. Only write number as your answer.
3) Blood pressure measurements consist of two numbers, the systolic pressure and the diastolic pressure. Subjects taking an experimental blood pressure medicine had the following measurements:
Systolic. 134. 115. 113. 123 119 118
Diastolic 69. 83. 77. 77. 69. 75
Compute the correlation coefficient. Round your answer to three decimal places. Write only a number as your answer.