Question

Recall that a conflict of interest scenario was presented to a sample of 200 marketing researchers and that 109 of these researchers disapproved of the actions taken. (a) Let p be the proportion of all marketing researchers who disapprove of the actions taken in the conflict of interest scenario. Set up the null and alternative hypotheses needed to attempt to provide evidence supporting the claim that a majority (more than 50 percent) of all marketing researchers disapprove of the actions taken.

Answer 1

Answer: Null hypothesis:
`p\leq0.50`

Alternative hypothesis:
`p>0.50`

Explanation:

• A null hypothesis is a type of hypothesis that states that there is no difference between a particular parameter of a population whereas an alternative hypothesis states that there is a difference.

Given: p = Proportion of all marketing researchers who disapprove of the actions taken in the conflict of interest scenario.

n= 200

Sample proportion =
`\hat{p}=(109)/(200)=0.545`

Claim : p>0.50

Null hypothesis:
`p\leq0.50`

Alternative hypothesis:
`p>0.50`