Answer:
The answer is 18
Step-by-step explanation:
Answer:
25.4, 28.6
Step-by-step explanation:
Given parameters
sample size, n = 24
sample mean, X = 27
population standard deviation, s = 3
critical value, Zα/2, where α = 0.01
99% confidence Interval, CI, is given as follows
CI = X ± Zα/2 × (s/√n)
Zα/2 = Z0.01/2 = Z0.005 = 2.576
CI = 27 ± 2.576 × (3/√24)
= (25.42 ,28.57)
860 *11/100=9460/100=94.6
94.6 is earned
Answer:
-75 and -77
Step-by-step explanation:
This can be wrote as
. Combine like terms and subtract 2 from both sides to get
. Divide by two to get
and then add two to get -75.