09 Jun PUBH 6033 week 5 assignment Hypotheses Testing
Question
I am having trouble with this assignment.
IQ SCORES FROM THE GENERAL POPULATION FORM A NORMAL DISTRIBUTION WITH AM = 100 ANDS = 15. HOWEVER, DATA INDICATE THAT CHILDREN’S INTELLIGENCE MAY BE AFFECTED IF THEIR MOTHERS HAVE GERMAN MEASLES DURING PREGNANCY. USING HOSPITAL RECORDS, A RESEARCHER OBTAINED A SAMPLE OF N = 36 SCHOOL CHILDREN WHOSE MOTHERS ALL HAD GERMAN MEASLES DURING THEIR PREGNANCIES. THE AVERAGE IQ FOR THIS SAMPLE WASX?= 94. DO THESE DATA INDICATE THAT GERMAN MEASLES HAVE A SIGNIFICANT EFFECT ON IQ? TEST WITHP=.05.
Note
µ = population mean
x? = sample mean
s = standard deviation
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Note: Each response is worth 6 points
Step 1: Set up your hypothesis and determine the level of significance
STATE THE NULL HYPOTHESIS
1. In written format
Answer:
2. In mathematical format
Answer:
STATE THE ALTERNATIVE HYPOTHESIS
3. In written format
Answer:
4. In mathematical format
Answer:
-CONTINUED BELOW-
DETERMINE THE LEVEL OF SIGNIFICANCE
5. Based on information in the scenario, what is the level of significance to be used?
Answer:
Step 2: Select the appropriate test statistic
6. The appropriate test statistic for the above scenario is the one-sample z test. What values are compared in a one-sample z test?
Answer:
Step 3: Set up the decision rule
7. Based on thelevel of significance you set in Step 1 and whether your alternative hypothesis is directional or non-directional, what is your decision rule (in relation to the z-statistic)?
Answer:
Step 4: Compute the test statistic
8. Calculate the z statistic.
Answer:
Step 5: Conclusion
9. Do you reject or fail to reject the null hypothesis?
Answer:
10. Is a child’s intelligence affected if the mother has German measles during pregnancy?
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