One attorney claims that more than 25% of all the lawyers in boston advertise for their business. a sample of 200 lawyers in boston showed that 63 of the lawyers had used some form of advertising for their business. at =0.05, is there enough evidence to support the attorney’s claim? (use the p-value method to test this hypothesis)

There is  enough evidence to support the attorney’s claim

Step-by-step explanation:

Given that one  attorney claims that more than 25% of all the lawyers in Boston advertise for their business.

Sample size n =200

Sample proportion =

Hypotheses:

(right tailed testat 5% significance level)

Assuming H0 to be true, std error of p =

Test statistic z = p diff/std error

=

p value for one tailed =0.0170

Since p <0.05 we reject null hypothesis

There is  enough evidence to support the attorney’s claim