Question

Question 36 (1 point) 36. A researcher would like to determine whether an over-the-counter cold medication has an effect on mental alertness. A sample of n = 16 participants was obtained, test scores in a driving simulation task were obtained before and after each person was given a standard dose of the medication. The summary data are as follows: MD = 5, SD = 8 Which of the following is the correct t value? O a. 3.0 Ob.2.5 c. 3.5 d. 2.0

Answer 1

SOLUTION:

From given data,

(36) A researcher would like to determine whether an over-the-counter cold medication has an effect on mental alertness.  A sample of n = 16 participants was obtained, test scores in a driving simulation task were obtained before and after each person was given a standard dose of the medication. The summary data are as follows: M_D = 5 , SD = 8

Which of the following is the correct t value?

We have,

M_D = 5 , S_D = 8

We know the formula for t is

t =  M_D / (S_D / sqrt(n))

t = 5  / (8 / sqrt(16))

t = 5  / (8 / 4)

t = 5  / 2

t = 2.5

Answer : Option (b) is correct.

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