QUESTION 4

1. When it comes to choosing a sampling procedure,

   		the decision is typically made at the same time as identifying the sampling frame
   		researchers can choose between probability and nonprobabilty samples
   		Both of the above
   		None of the above

1 points

QUESTION 5

1. With a probability sample

   		the probability of each member of the population being included in the sample is high
   		the probability of each member of the population being included in the sample is unknown
   		a disadvantage is that sampling error cannot be computed
   		an advantage is that the exact probability of each member of the population being included in the sample can be determined if the researcher uses a sample random sample.

1 points

QUESTION 6

1. A statistical method to check for representativeness is the _________.

   		frequency distribution
   		chi-square test
   		paired sample t-test
   		independent sample t-test

1 points

QUESTION 7

1. Assume a chi-square value of 4.918 with a corresponding p-value of .027. According to these results, there is _________ between the variable makeup of the sample and what was expected for the population and the sample ________ of the population in terms of gender.

   		a significant difference, is representative
   		a significant difference, is not representative
   		not a significant difference, is representative
   		not a significant difference, is not representative

1 points

QUESTION 8

1. Which of the following sampling frames would have a lowest incidence?

   		Males ages 20 to 40 with incomes between $50,000 and $100,000
   		Females ages 20 to 40 with incomes between $50,000 and $100,000 who are married
   		Males ages 20 to 40 with incomes between $50,000 and $100,000 who are married and have a degree in computer science
   		Females ages 20 to 40 with incomes between $50,000 and $100,000 who are married and have degrees in computer science and marketing

1 points

QUESTION 9

1. A researcher conducted a study of the 10,000 members of the New York Road Runners Club to assess attitudes about participating in the marathon during the pandemic. The researcher started with 20 study participants but had a goal of 40 so he asked the current participant to refer their friends who had also participated in the marathon. What type of sample did the researcher assemble?

   		Snowball
   		Simple Random
   		Stratified
   		Cluster
   		Judgement

1 points

QUESTION 10

1. A researcher wants to create a Simple Random Sample from a population of 120 students. What is the sample size if each student has a 5% chance of being in the sample?

   		60
   		120
   		6
   		30

2 points

QUESTION 11

1. Which of the following would best qualify as a stratified sample for studying men who shop at Costco's

   		100 men between the age of 25 and 35 who live on the upper west side of Manhattan
   		25 men with incomes between $50k and $60k, 25 men with incomes between $40k and $49,999k, 25 men with incomes between $30k and $39,999k and 25 men with incomes between 20k and $29,999k
   		100 men who only shop with their spouses
   		50 men who shopped on a specific Saturday between 12 and 4pm and 50 men who shopped on Saturday between 4pm and 8pm

1 points

QUESTION 12

1. Suppose a researcher wanted to know the sample size needed at the 95% confidence level, the variability of the population is unknown, and the desired precision is at +/- 3%.

   		1,067
   		3842
   		9604
   		196

2 points

QUESTION 13

1. Use the statistical formula for sample size. P is unknown and a 3% margin of error, and a sample size of 1849; what would be the value for Z?

   		1.64
   		1.46
   		25.8
   		2.58

1 points

QUESTION 14

1. What is the confidence level for the previous question?

   		90%
   		95%
   		99%
   		80%

1 points

QUESTION 15

1. A sample can also refer to objects, such as retail stores, websites, and products.

   		True
   		False

1 points

QUESTION 16

1. In most cases it is practical to survey an entire population

   		True
   		False

1 points

QUESTION 17

1. It is not necessary to survey an entire population as long as the sample adequately represents the population

   		True
   		False

1 points

QUESTION 18

1. The researchers' goal in sampling is for the sample frame to match a target population perfectly

   		True
   		False