An airline company is interested in improving customer satisfaction rate from the 64% currently claimed.
the company sponsored a survey of 216 customers and found that 146 customers were satisfied.
determine whether sufficient evidence exists that the customer satisfaction rate is higher than the claim by
the company.
what is the test statistic z? ex: 1.234
what is the p-value? ex: 0.456
does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company
at a significance level of a = 0.01?



Answer :