Of 150 patients randomly selected by a hospital, 90 of them said that their health insurance...

Of 150 patients randomly selected by a hospital, 90 of them said that their health insurance was not adequate.

(a) Construct a 99% confidence interval for the proportion of patients who would say that their health insurance was not adequate.

(b) Can we say that more than 50% of all patients of the hospital did not have adequate health insurance? Test at the 1% significance level.

Solutions

Expert Solution

Answer a)

Confidence Interval Calculation

99% confidence interval for the proportion of patients who would say that their health insurance was not adequate is (0.497, 0.703)

Answer b)

(5) Conclusion

It is concluded that the null hypothesis Ho is rejected. Therefore, there is enough evidence to claim that more than 50% of all patients of the hospital did not have adequate health insurance, at the 1% significance level

orchestra answered 1 year ago

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