How many tissues should a package of tissues contain? Researchers have determined that a person uses an average of 68 tissues during a cold. Suppose a random sample of 2500 people yielded the
Following data on the number of tissues used during a cold: x = 55, s = 23. Identify the null and
Alternative hypothesis for a test to determine if the mean number of tissues used during a cold is
Less than 68.

Question

How many tissues should a package of tissues contain? Researchers have determined that a person uses an average of 68 tissues during a cold. Suppose a random sample of 2500 people yielded the
Following data on the number of tissues used during a cold: x = 55, s = 23. Identify the null and
Alternative hypothesis for a test to determine if the mean number of tissues used during a cold is
Less than 68.
A)H0: μ = 68 vs. Ha: μ > 68
B)H0: μ = 68 vs. Ha: μ < 68
C)H0: μ > 68 vs. Ha: μ ≤ 68
D)H0: μ = 68 vs. Ha: μ ≠ 68

Quizplus · Accepted Answer

The null hypothesis (H0) always states that the parameter (in this case, the mean number of tissues used during a cold, μ) is equal to a specific value (here, 68). The alternative hypothesis (Ha) reflects the research question or what the test aims to find out. Since the test aims to determine if the mean number of tissues used is less than 68, the correct formulation is H0: μ = 68 vs. Ha: μ < 68.

How Many Tissues Should a Package of Tissues Contain? Researchers