A new diet is developed to help people lose weight. 50 people tried the diet and had an average weight loss of 8 pounds over 30 days with a standard deviation of 2 pounds. A control group of 100 people tried a standard diet of fruits and vegetables also had an average weight loss of 9 pounds with a standard deviation of 1.2 pounds. Using a 5% significance determine if the new diet is better than eating fruits and vegetables. Take as population 1 the group on the new diet. Give the rejection region
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Step 1
e., the average weight loss of the new diet is less than or equal to that of the standard diet. The alternative hypothesis (H1) is that the new diet is better than the standard diet, i.e., the average weight loss of the new diet is greater than that of the standard Show more…
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A new diet is developed to help people lose weight. 50 people tried the diet and had an average weight loss of 8 pounds over 30 days with a standard deviation of 2 pounds. A control group of 100 people tried a standard diet of fruits and vegetables also had an average weight loss of 9 pounds with a standard deviation of 1.2 pounds. Using a 5% significance determine if the new diet is better than eating fruits and vegetables. Take as population 1 the group on the new diet. Give the test statistic and conclusion.
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A new diet is developed to help people lose weight. 50 people tried the diet and had an average weight loss of 8 pounds over 30 days with a standard deviation of 2 pounds. A control group of 100 people tried a standard diet of fruits and vegetables also had an average weight loss of 9 pounds with a standard deviation of 1.2 pounds. Using a 5% significance determine if the new diet is better than eating fruits and vegetables. Take as population 1 the group on the new diet. Give the test statistic.
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We wish to determine if a certain diet is effective in helping weight loss. A random sample of 10 people is chosen to try the diet. There weights of before and after the diet are listed below. Set up and perform the proper test (.05 level) to determine if the diet is effective in helping people lose an average of more than 5 pounds. Before 123 155 154 172 137 141 188 173 166 139 After 119 148 147 166 129 136 179 166 158 132 Ho: Ha: Test Statistic: Left Chart Value: Right Chart Value: Conclusion: Fail to Reject Ho Reject Ho
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