A marriage counselor Traditionally seen that the proportion p of all married couples for whom her communication program can

Question

A marriage counselor Traditionally seen that the proportion p of all married couples for whom her communication program can prevent divorce 79 After making s cent changes the marriage counselor now claims that her program can prevent divorce in more than 79 of married couples In a random sample of 220 married couples who completed her program 178 of them stayed together Based on this sample is there enough evidence to support the marriage counselor s claim at the 0 10 level of significance Perform one tailed test Then complete the parts below Carry your intermediate computations to three or more decimal places If necessary consult a list of formulas a State the null hypothesis Ho and the alternative hypothesis H HO H 0 b Determine the type of test statistic to use Choose one c Find the value of the test statistic Round to three or more decimal places 0 d Find the critical value Round to three or more decimal places e Is there enough evidence to support the marriage counselor s claim that the proportion of married couples for whom her program can prevent divorce is more than 79 X 0 0 a X S 0 0 0 0 P S Q OSO 020 010 O

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