Reference no: EM132844695

1. Match the term to its definition

1. A category composed of people with certain similarities such as gender, race , religion , or even grade level. Each person belongs to only one group. A simple random sample of equal size is taken from each group.

2. A division of the population into separate physical units such as districts, neighborhoods or streets. Each person belongs to only one unit. A simple random sample is taken from the units . All people within the selected units are surveyed.

3. A group of units ( persons, objects, or other items) enumerated in a census or from which a sample is drawn

1

2. - Stratum

3

1

2 - Population

3

1

2. - Cluster

3

2. According to the 68-95-99.7 rule what percentage of the population are more than 2 standard deviation away from the mean

a. 2.5

b. 5

c. 68

d. 95

 

3 According to the 68-95-99,7 rule what percentage of the population are between 1 standard deviation below the mean and 2 standard deviation above the mean

a. 79

b. 68

c. 95

d. 82

4 The sampling distribution of the mean becomes approximately normally distributed when which of the following conditions is met

a. The standard deviation of the population is large

b. The sample size is large

c A single random sample is drawn from the population

d. The population distribution is not symmetric

5. You select a sample off 100 and find a mean of 60 and a standard deviation of 12 . What is the standard error of the sampling distribution of sample means

a. 12

b. 0.5

c. 1.2

d. 0.6

6. What is the Z score where 92% of the normal curve is below that Z score and 8% of the normal curve lies above that same Z score.

a. 1.41

b. -1.41

c. -1.96

d. 1.96