Question

I have two questions and I just need an assurance that they're correct. I can't mess it up. Here are the questions:

1. ​ A potato-chip producer has just received a truckload of potatoes from their main
supplier. If the producer finds convincing evidence that more than 8% of the potatoes in
the shipment have blemishes, the truck will be sent away to get another load from the
supplier. A supervisor selects a random sample of 500 potatoes from the truck. An
inspection reveals that 47 of the potatoes have blemishes. Carry out a significance test
at the α = 0.05 significance level. What should the producer conclude?

2. ​ As part of the National Social Network Site Project researchers conducted two
surveys in 2017. The first survey asked a random sample of 799 U.S. teens about their
use of social media and the Internet. A second survey posed similar questions to a
random sample of 2253 U.S. adults. In these 2 studies, 80% of teens and 69% of
adults used social-networking sites. Construct and interpret a 95% confidence interval
for the difference between the proportion of all U.S. teens and adults who use
social-networking sites.

My answers are respectively posted in the following comments. Please refrain from looking up the question as typically there's a different LOS, which could severely affect statistical significance.

Your input is highly appreciated. Thanks in advance.

Answer 1

*calculation correction → i mean to say 0.1251 > 0.05, not less.

Answer 2

and I meant to say there’s no statistical significance and H0 failed to reject at alpha=0.05

Answer 3

haha that's ma baby wit the same hand writing as me. lookin on fleeek✏️💙

Answer 4

XDDD AWW HAHAHAHAH