WorksheetsCh 7 Sampling Distributions Review
Total questions: 14
Worksheet time: 11mins
As the sample size increases, the standard deviation of the sampling distribution ______________.
decreases
increases
becomes more normal
gets close to 1
According to a recent newspaper article, 64% of teens have an active twitter account. 64% is a ____________.
statistic
parameter
population
sample
According to a recent newspaper article, 64% of teens have an active twitter account. What symbol would you use with 64%?
x̄
p̂
μ
p
The average GPA of Mr. Z's 3rd period class is 3.5. The number 3.5 is a _____________.
population
parameter
statistic
sample
The average GPA of Mr. Z's 3rd period class is 3.5. What symbol would you use to describe the number 3.5?
μ
p
p̂
x̄
A population has mean μ = 25 and standard deviation σ = 3.4. Find the mean and standard deviation of sampling distribution when n = 16.
25, 0.85
25, 3.4
6.25, 0.85
6.25, 3.4
A large population is skewed right. Describe the sampling distribution of sample means of size 5.
normal
approximately normal
skewed left
skewed right
A large population is skewed left. Describe the sampling distribution of sample means of size 50.
normal
approximately normal
skewed right
skewed left
62% of OHS students have plagiarized. Describe sampling distribution of size 30.
Approximately normal with mean 0.62 and SD 0.0886
Approximately normal with mean 62 and SD 8.86
Approximately normal with mean 0.62 and SD 2.66
The sample size is too small to determine shape.
62% of OHS students have plagiarized. Find the probability that less than 50% of a sample of 30 students has plagiarized.
0.0885
0.9115
0.0968
0.9032
What are the mean and standard deviation of the sampling distribution of sample means for an SRS of size 35?
μx̅= 0.5 σx̅= 0.0488
μ = 0.5 σ = 0.0488
μx̅= 0.5 σx̅ = 0.289
μ = 0.5 σ = 0.289
What is the probability a sample of 35 people will wait longer than 0.6 minutes for an elevator?
0.2018
0.9798
0.3632
0.0202
If the population of wait times was skewed, would that change your previous answer?
No, the sample size is too small for the sampling distribution to be approximately Normal.
No, the sample size is large enough for the sampling distribution to be approximately Normal.
Yes, the sample size is too small for the sampling distribution to be approximately Normal.
Yes, the sample size is large enough for the sampling distribution to be approximately Normal.
Where was Mr. Z born?
Cleveland, OH
Eudora, KS
Columbus, OH
Canton, OH
