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According to a recent article published by CollegeCalc, the proportion of 4-year colleges in the U.S....

According to a recent article published by CollegeCalc, the proportion of 4-year colleges in the U.S. that are private is 50%. A high school senior looking at US News National College Rankings is sure that the proportion of colleges that are private is much less than 50% based on the colleges she has been considering. Using the information provided, conduct a one-sided hypothesis test.

1. Choose and state a significance level. Explain the meaning of the significance level.

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Answer #1

Significance level = 0.05
Significance level is denoted by alpha. when probability rejecting the null hypothesis then it is true

For, ex p value is 0.0021 at 0.05 significance level it means p value is less than 0.05 level so we reject the null hypothesis

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