Question
SAT scores : Scores on the math SAT are normally distributed. A sample of 28 SAT scores had standard deviation = s 87 .Someone says
SAT scores: Scores on the math SAT are normally distributed. A sample of
28
SAT scores had standard deviation
=s87
.Someone says that the scoring system for the SAT is designed so that the population standard deviation will be different than
=72
.Do these data provide sufficient evidence to contradict this claim? Use the
=0.10
level of significance.
Part:0 / 5
0 of 5 Parts Complete
Part 1 of 5
State the null and alternate hypotheses.
:H0 >
:H1 > This hypothesis test is a right-tailed test. |
Part:1 / 5
1 of 5 Parts Complete
Part 2 of 5
Find the critical values. Round the answers to three decimal places.
The critical values are and . |
Part:2 / 5
2 of 5 Parts Complete
Part 3 of 5
Compute the test statistic. Round the answer to three decimal places.
=2 |
Part:3 / 5
3 of 5 Parts Complete
Part 4 of 5
Determine whether to reject
H0
.
Do not reject the null hypothesis H0 . |
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