Average IQ scores for young school children are known to be 100 (SD = 15). However, the literature indicates that children’s intelligence may be decreased if their mothers have German measles during pregnancy. Using hospital records, a researcher obtained a sample of n = 25 school children whose mothers all had German measles during their pregnancies. Do the data indicate that children born to mothers who had German measles during the pregnancy have significantly lower IQ scores than typical young school children? DATA (Fictional) child IQ scr 1 91 2 111 3 97 4 95 5 96 6 95 7 95 8 96 9 94 10 93 11 95 12 92 13 96 14 91 15 97 16 93 17 92 18 99 19 93 20 97 21 85 22 94 23 96 24 95 25 96 Looking at the research scenario for this lab, you will see that it says, “ literature indicates that children’s intelligence may be decreased if their mothers have German measles during pregnancy” A. Does this statement imply a one-tail or two-tail hypothesis test? B. What is your research hypothesis? C. What is your NULL hypothesis? D. Convert the sample mean to a z score using the following formula: z = (M- m)/sM where sM = s/Ön
Average IQ scores for young school children are known to be 100 (SD = 15). However, the literature indicates that children’s intelligence may be decreased if their mothers have German measles during pregnancy. Using hospital records, a researcher obtained a sample of n = 25 school children whose mothers all had German measles during their pregnancies. Do the data indicate that children born to mothers who had German measles during the pregnancy have significantly lower IQ scores than typical young school children?
DATA (Fictional)
|
child |
IQ scr |
|
1 |
91 |
|
2 |
111 |
|
3 |
97 |
|
4 |
95 |
|
5 |
96 |
|
6 |
95 |
|
7 |
95 |
|
8 |
96 |
|
9 |
94 |
|
10 |
93 |
|
11 |
95 |
|
12 |
92 |
|
13 |
96 |
|
14 |
91 |
|
15 |
97 |
|
16 |
93 |
|
17 |
92 |
|
18 |
99 |
|
19 |
93 |
|
20 |
97 |
|
21 |
85 |
|
22 |
94 |
|
23 |
96 |
|
24 |
95 |
|
25 |
96 |
Looking at the research scenario for this lab, you will see that it says, “ literature indicates that children’s intelligence may be decreased if their mothers have German measles during pregnancy”
A. Does this statement imply a one-tail or two-tail hypothesis test?
B. What is your research hypothesis?
C. What is your NULL hypothesis?
D. Convert the sample mean to a z score using the following formula:
z = (M- m)/sM where sM = s/Ön
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
