Listed below are systolic blood pressure measurements(mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.01 significance level to test for a difference between the measurements from the two arms. What can beconcluded?

Right arm

142

143

123

133

139

Left arm

172

159

190

152

151

In thisexample, d is the mean value of the differences d for the population of all pairs ofdata, where each individual difference d is defined as the measurement from the right arm minus the measurement from the left arm. What are the null and alternative hypotheses for the hypothesistest?

A.

H0: d=0

H1: d0

B.

H0: d0

H1: d=0

C.

H0: d=0

H1: d<0

D.

H0: d0

H1: d>0

Identify the test statistic.

t=

nothing

(Round to two decimal places asneeded.)

Identify theP-value.

P-value=

nothing

(Round to three decimal places asneeded.)

What is the conclusion based on the hypothesistest?

Since theP-value is

less

greater

than the significancelevel,

reject

fail to reject

the null hypothesis. There

is

is not

sufficient evidence to support the claim of a difference in measurements between the two arms.