Blood glucose levels for obese patients have a mean of 100 with a standard deviation of 15. A researcher thinks that a diet high in raw corn starch will have a negative or positive effect on blood glucose levels. A sample of 30 patients who have tried the raw corn starch diet have a mean glucose level of 140. Test the hypothesis that the raw cornstarch had an effect at a significant level of 0.05
Blood glucose levels for obese patients have a mean of 100 with a standard deviation of 15. A researcher thinks that a diet high in raw corn starch will have a negative or positive effect on blood glucose levels. A sample of 30 patients who have tried the raw corn starch diet have a mean glucose level of 140. Test the hypothesis that the raw cornstarch had an effect at a significant level of 0.05
MATLAB: An Introduction with Applications
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Related questions
Question
Blood glucose levels for obese patients have a
researcher thinks that a diet high in raw corn starch will have a negative or positive effect on
blood glucose levels. A sample of 30 patients who have tried the raw corn starch diet have a
mean glucose level of 140. Test the hypothesis that the raw cornstarch had an effect at a
significant level of 0.05

Transcribed Image Text:Blood glucose levels for obese patients have a mean of 100 with a standard deviation of 15. A
researcher thinks that a diet high in raw corn starch will have a negative or positive effect on
blood glucose levels. A sample of 30 patients who have tried the raw corn starch diet have a
mean glucose level of 140. Test the hypothesis that the raw cornstarch had an effect at a
significant level of 0.05
Step 1: Determine the null hypothesis
Ho: µ =
H:u +
Step 2: Two-tailed test
Step 3: Select significance level a =
Step 4: Do we do a Z test of T test?
Step 5: Find the critical value Zeri from the t Table.
Lvel of Confidence
Draw and label the graph.
From the t Table. Zerit fora = 0.05, ± 1.96
Fail to Reject
Reject
Reject
Note that a= 0.05 (5%) means 2.5% in each tail. This alpha
level indicates the Level of Confidence to be 95%.
a/2
a/2
Zcrit =
Zcrit =
Step 6: Calculate the Test Statistic (Zobt)
N =
X =
Step 7-9. State the conclusion
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