In a recent poll of 1000 randomly selected adults, a president's approval rating stood at 51...
In a recent poll of 1000 randomly selected adults, a president's approval rating stood at 51 %.
a) Make a 90% confidence interval for his approval rating by all adults in the country.b) Based on the confidence interval, test the null hypothesis that 51% of the country approved of the way he was handling his job at that time.
a) Find the 90% confidence interval as a true proportion.
(___, ___) (Round to three decimal places as needed.)
Homework Answers
(b)
As the confidence interval contains the null hypothesized value 0.51, we fail to reject the null hypothesis.
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