Hypothesis test practice

A mayor is concerned about the percentage of city residents who express disapproval of his job performance.  His political committee pays for a newspaper ad, hoping to keep his disapproval rating below 21%.  They will use a follow up poll to access effectiveness.  What are the correct null and alternative hypotheses?

A P-value indicates:

• the probability that the null hypothesis is true
• the probability that the alternative hypothesis is true
• the probability of the observed statistic given the null hypothesis is true
• the probability that the null is true given the observed statistic

• 1 Sample Z test

• 1 Sample T test

• 1 Proportion Z test

• Matched Pair

Which of the following represents the appropriate null & alternative hypotheses?

The mean height of women is greater than 64"

• a) Reject the null hypothesis

• b) Reject the alternative hypothesis

• c) Fail to reject the null hypothesis

• d) Fail to reject the alternative hypothesis

The weight of the average 6th grade student's backpack (with books in it) is 18.4 lbs. The principal of the school thinks that the backpack does not weight 18.4 lbs. What is the null and alternate hypothesis?

• One proportion z-test

• one Sample z-test

• paired t-test

• chi-square Independence

• One Sample T-Test

• One Proportion Z-Test

• One Sample Z-Test

• Chi-square Goodness of Fit

Tags

CCSS.HSS.IC.B.4

• One Sample Z-test

• 2 Sample t-test

• 2 Proportion z-test

• Linear Regression T-Test for slope

• Left-tail

• Two-tail

• Right-tail