Question
Question 1 (1 point) The mean daily TV viewing time per houshold is 8.3 hours. Suppose the daily TV viewing times are normally distributed with
Question 1 (1 point)
The mean daily TV viewing time per houshold is 8.3 hours. Suppose the daily TV viewing times are normally distributed with a standard deviation of 2.4 hours. What viewing time is 1.74 standard deviations below the mean?
Question 1 options:
12.48 hours | |
.50hours | |
4.12hours | |
-4.12 hours |
Question 2 (1 point)
The marks on the Math 1080 Unit 2 test were normally distributed with a mean of 76.2% and a standard deviation of 7.32%. What is the score of a test that is 1.31 standard deviationsabove the mean?
Question 2 options:
87.09% | |
-66.61% | |
66.61% | |
85.79% |
Question 3 (1 point)
The average IQ score of the population of high school students is 100 points with a standard deviation of 15. What is the z score of a sample of 35 students with an mean of 98 points.
Remember this is a sample!
Question 3 options:
-.79 | |
.79 | |
-.13 | |
-.80 |
Question 4 (1 point)
The average male drinks 2 litres of water when active outdoors with a standard deviation of .7 litres. What is the probability that a sample of 50 men on a nature hikewill use less than 1.96 litres of water each?
Question 4 options:
.6554 | |
.3446 | |
.33oo | |
.6700 |
Question 5 (1 point)
The population of the birthweight of babies at a hospital, has a mean of 112 ounces and a standard deviation of 20.6 ounces. What is probability thata sample of the birthweights of the next 49 babies born at the hospital has a mean of more than107ounces.
Question 5 options:
.0028 | |
.9616 | |
.0446 | |
.9554 |
Question 6 (1 point)
Identify the type of sampling technique for the following sample:
I identify different counties in Ontario and choose five of those counties at random. Then I survey all the farms in each of those counties to determine the farm pesticide use.
Question 6 options:
Convenience sampling | |
Cluster Sampling | |
Simple random sampling | |
Stratified sampling | |
Systematic sampling |
Question 7 (1 point)
Identify the type of sampling technique for the following sample;
I survey the opinion of 10 of my60 employees by puttingall the employee numbers in a hat and selecting 10 of the numbers out.
Question 7 options:
Cluster Sampling | |
Systematic Sampling | |
Convenience Sampling | |
Simple Random Sampling | |
Stratified Sampling |
Question 8 (1 point)
Identify the type of sampling technique for the following sample;
Fifty students out of 500 students are choosen by surveying every 10 student to determine the type of bread they enjoy for lunch.
Question 8 options:
Convenience Sampling | |
Simple Random Sampling | |
Cluster Sampling | |
Systematic Sampling | |
Stratified Sampling |
Question 9 (1 point)
Identify the type of sampling technique for the following sample;
You take a sample of 40 employees from a total of 180 employees. 50% of the employees are male and full time, 10% are male and part time, 5% are female and full time and 35% are female and part time. You randomly select 20 full time male employees, 4 part time male employees , 2 full time female employees and 14 part time female employees.
Question 9 options:
Convenience Sampling | |
Stratified Sampling | |
Systematic Sampling | |
Cluster Sampling | |
Simple Random Sampling |
Question 10 (1 point)
identify the type of sampling technique for the following sample;
Car buyers are divided into various household incomes, Less than $25, 000 $25,000 - $39,999 $40,000 - $60,000 More than $60,000 and 25 car buyers from each household income bin are randomly selected to answer a survey their car buying satisfaction.
Question 10 options:
Cluster Sampling | |
Systematic Sampling | |
Simple Random Sampling | |
Convenience Sampling | |
Stratified Sampling |
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