Researchers determine that 60 tissues is the average number of tissues used during a cold. Suppose a random sample of 100 users yielded the following statistics on the number of tissues used during a cold: = 52 and s = 22. Using the sample information provided, what is the value of the test statistic? A) t = (52 - 60)/22 B) t = (52 - 60)/(22/10) C) t = (52 - 60)/(22/100) D) t = (52 - 60)/(22/100²)

Question

Quizplus · Accepted Answer

The formula for calculating the t-test statistic is (sample mean - population mean)/(sample standard deviation/square root of sample size). Therefore, using the sample information provided, the calculation would be (52-60)/(22/√100), which simplifies to -8/2.2 or -3.64. Thus, the correct answer choice is B.

Researchers Determine That 60 Tissues Is the Average Number of Tissues