Question

The average chocolate chip cookie contains 110 calories. A random sample of 15 different brands of chocolate chip cookies found that the average amount

of calories was 127 calories with a sample standard deviation of 6.23 calories. At .01 level of significance, test the hypothesis that the average calories for chocolate chip cookies is greater than 110.

What is the test statistic value for step 3?
a. 10.5683
b. 2.7287
c. 58.6167
d. 2.8288

Answer 1

The test statistic value for step 3 is 2.8288.

Step-by-step explanation:

To test the hypothesis that the average calories for chocolate chip cookies is greater than 110, we need to calculate the test statistic value.

The test statistic value can be calculated using the formula: t = (sample mean - population mean) / (sample standard deviation / square root of sample size)

Plugging in the values, we get: t = (127 - 110) / (6.23 / √15) = 2.8288

Therefore, the test statistic value for step 3 is 2.8288.