Question

A bowl has 8 green grapes and 15 red grapes. Henry randomly chooses a grape, eats it, and then chooses another grape. What is the probability that both grapes are red?
(Points : 5)
about 39.7%

about 41.5%

about 42.5%

about 44.5%

Answer 1

15. Study results indicate that the mean time to download a certain program to a personal computer is between 26.9 and 33.7 seconds. What is the study's margin of error?
(Points : 5)
3.4 s

3.7 s

6.8 s

7.4 s



Question 16.16. If movie theater tickets in a region have a mean cost of $8.41 and a standard deviation of $0.82, what is the approximate standard deviation of the sampling distribution of the mean for samples of size 50?
(Points : 5)
$0.02

$0.10

$0.12

$0.17



Question 17.17. In a random sample of 40 people who rode a roller coaster one day, the mean wait time is 52.4 minutes with a standard deviation of 9.5 minutes. In a random sample of 50 people who rode a Ferris wheel the same day, the mean wait time is 14.1 minutes with a standard deviation of 2.3 minutes. Construct a 99% confidence interval for the difference between the mean wait times of everyone who rode both rides.
(Points : 5)
(36.8, 39.8)

(36.9, 40.7)

(35.8, 40.8)

(34.3, 42.3)
@jackmullen55

Answer 2

last ones and I am done thanks for your help! :)

Answer 3

For the one that says 15 it is 6.8

Answer 4

I can't say as I know 16

Answer 5

For the first one what do you think it is?

Answer 6

For the first one it is 41.5 (I did it earlier today)

Answer 7

How did you get that/

Answer 8

Easy I did 15/23 • 14/22 = 41.5

Answer 9

OHHHHHHHHHHHH OK THANKS

Answer 10

Could I get a medal love? @Kyliejones