Answer: 50.84%
Step-by-step explanation:
(89-59) /59 = 0.5084/100 = 50.84%
Answer: B Or A
Step-by-step explanation:
900 ÷ 72 = 12.5 minutes
Thus the correct answer is option A .
Answer:
d. 200 and 2
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean
and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this problem, we have that:
Mean = 200
Standard deviation = 18
Sample size: 81
Standard error: 
So the correct answer is:
d. 200 and 2
Step-by-step explanation:
the answer is $.75
:))))))