Essay
The time necessary to complete an examination has a mean of 45 minutes and a standard deviation of 4 minutes. The average time necessary for 64 randomly selected students is computed.
What is the mean of the sampling distribution of 
?
______________
What is the standard deviation of the sampling distribution of 
?
______________
Can we say that the sampling distribution of 
is approximately normally distributed?
______________
Why?
________________________________________________________
Correct Answer:
Verified
45; 0.5; Yes; Because n = 64 > 30, our r...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q96: The mean of the sampling distribution of
Q97: A machine which manufactures a part for
Q98: A well-known juice manufacturer claims that its
Q99: The Central Limit Theorem describes the distribution
Q100: Random samples of size n were selected
Q102: Assignable cause variation refers to variation in
Q103: Suppose a random sample of 25 students
Q104: Fifty samples of size 500 were drawn
Q105: A sampling distribution is a probability distribution
Q106: Among the most common sources of random