Frito-lay fills bags of tortilla chips that are labeled with a net weight of 288.5 grams. a random sample of 24 bags is selected and found to have an average net weight of 289.7 grams and a sample standard deviation of 5.6 grams. use a 95% confidence interval to investigate whether the filling process is working properly.

It will reject the null hypothesis.

Step-by-step explanation:

Since we have given that

Hypothesis:

n = 24

Average mean = 289.7 grams

Standard deviation = 5.6 grams

We need to find the 95% confidence interval.

Since n = 24 <30 , so we will use t test.

Now, degrees of freedom = n- 1 = 24-1 =23

So,

Since t(calculated)>t

1.05>0.685

So, it will reject the null hypothesis.

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