Nutritional researchers conducted an investigation of two high-fiber diets intended to reduce cholesterol level. a group of people with high cholesterol were randomly selected to receive an "rice" diet or a "vegetable" diet for 20 days. Use t test to compare the diets at 5% significance level. Null Hypothesis: The means from two respective diets are the same Alternative Hypothesis: The two means from the two diets differ.

Failed to reject , hence the two means from the two diet differs.

Step-by-step explanation:

t has v degrees of freedom and

Decision Rule: Reject if , otherwise do not reject.

Conclusion: Since the calculated test statistic is less than the critical point, we fail to reject the null hypothesis and therefore conclude that the average effects of the two high-fiber diets differ significantly at 5% level of significance.

the answer will be

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100