Body mass index BMI weight in lbs height in inches X 703 A

Body mass index (BMI) = (weight in lbs. / height in inches) X 703. An adult BMI of 24 is considered desirable. A study of 12 adults that used a one-sample t-test to address H₀: u=24 reported a t_stat of 2.16.

A) What is the one-sided P-value for this test?

B) What is the two-sided P-Value?

Solution

A)

Here, df = n - 1 = 12 - 1 = 11.

Using technology, [you can use the TDIST function in Excel]

One sided P = 0.026852145 [answer]

B)

Multiplying the above P by 2,

Two sided P = 0.05370429 [answer]

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[TDIST asks for =TDIST(t value, degrees of freedom, number of tails) then gives the P value itself.]