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An education specialist was studying SAT math scores at a local university. She found the following...

An education specialist was studying SAT math scores at a local university. She found the following 95% confidence interval for the population mean score for SAT math: (450, 550). Suppose that a significance test at Ho: population mean equals 447 versus Ha:population mean does not equal 447. The p-value for this test was 0.0007. Which of the following statements accurately describes this situation?

The population mean score for SAT Math is statistically and practically different from 447.

The population mean score for SAT Math is practically (but not statistically) different from 447.

The population mean score for SAT Math is statistically (but not practically) different from 447.

The population mean score for SAT Math is NOT statistically or practically different from 445.

math   Statistics-And-Probability   
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Answer #1

The population mean score for SAT Math is statistically and practically different from 447.

P value is =0.0007 <0.05

Therefore, we reject H0 at

95% confidence interval does not include 447

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