d. A drug company says their brand of over the counter pain medicine contains on average 1.25 grams of acetaminophen in each tablet. A consumer wants to find evidence against the drug company's claim. 1. Identify the parameter: 2. Null hypothesis: 3. Alternative Hypothesis:
Answer d:
Parameter is defined as the numerical descriptive measure of the population. In this case, the medicine contains an average of 1.25 grams of item A. This average can be considered as the population parameter because it represent the characteristic of the population from which the sample is selected.
Parameter = Average containt of acetaminophen in each tablet.
Here, the claim implies that the "not equal to" sign should be used as part of the alternative hypothesis Ha. Thus, the null and alternative hypothesis will be:
Answer e:
In this case, the age of women at her first child is greater than 25 years. This average can be considered as the population parameter because it represent the characteristic of the population from which the sample is selected.
Parameter = Average age of women at the time of her first child.
Here, the claim implies that the "greater than" sign should be used as part of the alternative hypothesis Ha. Thus, the null and alternative hypothesis will be:
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