Imagine that you have a new advertisement, and you want to know if after watching it whether teens and adults are equally interested in your product....

1. Imagine that you have a new advertisement, and you want to know if after watching it whether teens and adults are equally interested in your product. You sample 150 teens, of whom 36 say they are interested after watching. After 100 adults watched, 25 said they were interested. What are your hypotheses?

A. Ho: PTeens - PAdults = 0

Ho: PTeens - PAdults ne 0

B. Ho: P-HatTeens - P-HatAdults = 0

Ho: P-HatTeens - P-HatAdults ne 0

C. Ho: PTeens - PAdults = 0

Ho: PTeens - PAdults > 0

D. Ho: PTeens - PAdults = 0

Ho: PTeens - PAdults < 0

1. What is the p-pooled?

A. .244 or 24.4%

B. .24 or 24%

C. .25 or 25%

D. No answer text provided.

1. How many standard deviations away from the null is the difference between your sample proportions?

A. 0.01 or 1%

B. .18

C. 0.055

D. 85.72%

1. What is your conclusion? 

A. Fail to reject. There is not a statistically significant difference between the percent of adults and teens who liked the product.

B. Reject the null. The percent of teens and adults that like the product is different.

C. Fail to reject the null. There is a statistically significant difference in the percent of teens and adults that like the product.

D. Reject the null. There is no difference in the percent of adults and teens that like the product.

1. What is the p-value? 

A. 85.72%

B. 42.86%

C. 14.28%

D. 57.14%

this is so confusing to me; I have been reading the book, attending office hours & attending lecture and I am still confused with this assignment.

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