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How do I find the F score in STAT crunch? SAT Reading Scores An instructor claims that the variance of SAT critical reading scores for
How do I find the F score in STAT crunch?
SAT Reading Scores An instructor claims that the variance of SAT critical reading scores for females is different than the variance of SAT critical reading scores for males. The table shows the SAT critical reading scores for 9 randomly selected female students and 13 randomly selected male students. At 1% level of significance, can you support the instructor's claim?
Female | 480 | 610 | 340 | 630 | 520 | 690 | 540 | 600 | 800 | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Male | 560 | 680 | 360 | 530 | 380 | 460 | 630 | 310 | 730 | 740 | 520 | 560 | 400 |
Instructions
- Step 1: Specify the hypotheses:
- HO: Variance of Population 1 is equal to Variance of Population 2.
- HA: Variance of Population 1 is not equal to Variance of Population 2.
- Step 2: Test statistic and related P-value.
- StatCrunch will compute an F-value test statistic and the related P-value.
- Copy and paste the Hypothesis test results table below.
- Step 3: Make a decision based on comparing the P-value with the level of significance, alpha, as follows:
- If P-value less than or equal to alpha, reject HO.
- If P-value greater than alpha, fail to reject HO.
- Step 4: State your conclusion.
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