The Ankle Brachial Index(ABI) compares the blood pressure of apatient's arm to the blood pressure of thepatient's leg. A healthy ABI is 0.9 or greater. In astudy, researchers obtained the ABI of 187 women with arterial disease. The results were a mean ABI of 0.90 with a standard deviation of 0.15. At the 5% significancelevel, do the data provide sufficient evidence to concludethat, onaverage, women with arterial disease have an unhealthyABI?

Set up the hypotheses for theone-mean t-test.

H0:

Ha:

The test statistic is t=

(Round to two decimal places asneeded.)

Identify the criticalvalue(s). Select the correct choice below and fill in the answer box within your choice.

(Round to three decimal places asneeded.)

A. The critical valuesare t/2=

B.The critical valueis t=

C. The critical valueis t=

(Do not reject/Reject) the null hypothesis. The data provide (provide/ do not provide) sufficient evidence to conclude that women with arterial disease have (an unhealthy ABI/ a healthy ABI).