Answer:
Option D
Step-by-step explanation:
A reporter collects a random sample of 50 runners from all the runners who finished the Cherry Blossom Ten Mile Run in 2009 and constructs a 99% confidence interval for the true mean finish time to be (86.05, 99.38) minutes.
Assuming the reporter performed the calculations correctly, which of the following statements are appropriate interpretations of this confidence interval?
We can expect that 99% of confidence intervals created using the same method the reporter used will contain the true mean run time for runners of this race.
Answer:
D
Step-by-step explanation:
usually anything with 11 on the numerator is a repeating decimal and the 0.37 is closest to 36.
so by guessing you know is D
Answer:
$40
Step-by-step explanation:
Trent contributes 5/(5+2) = 5/7 of the amount in his account. For an amount of $56, he must contribute ...
(5/7)×$56 = $40
Trent will have to put $40 into the account before he can buy a $56 skateboard.
1/3= 5/15
2/5= 6/15
5/15 + 6/15 = 11/15
15/15 - 11/15 = 4/15
Part C= 4/15
