Question

in an article appearing in todays health a writer states that the average number of calories in a serving of popcorn is 76. to determine if the average number of calories in a serving of popcorn is different from 76, a nutritionist selected a random sample of 20 servings of popcorn and computed the sample mean number of calories per serving to be 80 with a sample standard deviation of 6.3. state the null and alternative hypotheses.

Explanation:

The null hypothesis ($H_0$) is a statement of no - effect or no - difference. Here, it assumes the average number of calories is 76. The alternative hypothesis ($H_1$) is what we are trying to find evidence for. Since we want to determine if the average is different from 76, it is a two - tailed test.

Answer:

$H_0:\mu = 76$
$H_1:\mu
eq76$