A company recently announced that they have found a way to help college students
ID: 3256564 • Letter: A
Question
A company recently announced that they have found a way to help college students complete a mathematics assessment test more quickly. The company said that using a specific meditation method for 15 minutes, before taking the assessment, would help students complete the test more quickly. A researcher wants to use a statistical test to decide if the meditation method is effective. The researcher has previous data from thousands of college student who took this test. The time it took these students to complete the test follows a normal distribution with mean =75 minutes and standard deviation =7 minutes. Which of the following pairs represent appropriate hypotheses for this problem? H0: µ = 75, HA: µ < 75 H0: µ < 75, HA: µ = 75 H0: µ = 75, HA: µ > 75 H0: µ > 75, HA: µ < 75
Explanation / Answer
researcher wants to use a statistical test to decide if the meditation method is effective. that is he wants to if time taken to complete is less . that is less than 75 min .
hence
option A ) H0: µ = 75, HA: µ < 75 is correct
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