Question

QUESTION 1

Research that analyzes a portion of an entire population is carried out on a:

a. sample

b. population

c. census

d. survey

QUESTION 2

__________ results in a difference between the sample and population regardless of how well the sampling plan has been designed.

a. measurement error

b. sampling error

c. human error

d. sigma erroneous

QUESTION 3

Which variety of nonrandom sampling takes proportions into consideration?

a. Convenience

b. Judgment

c. Quota

d. Purposive

   

QUESTION 4

Taking a simple random sample from each of a number of subgroups (for example, lower-income Catholics, middle-income Protestants, and so on) is what sampling method?

a. Cluster sampling

b. Stratified sampling

c. Systematic sampling

d. Quota sampling

   

QUESTION 5

The difference between a parameter and a statistic is:

a. A parameter aggregated elements in a study & the statistic selections the parameter

b. A statistic aggregated elements in a study & the parameter selections of statistic

c. A parameter describes the population while a statistic describes the sample

d. A statistic describes the population while a parameter describes the sample

QUESTION 6

The researcher defines the population under study. True False

QUESTION 7

In a random sample all members of the population do not have a chance of selection.

True False

QUESTION 8

On a standardized test of mathematical ability, Kim scored a 42, and John scored a 35. The distribution of test scores for the population is normal, with a mean of 33 and a standard deviation of 6.3. SHOW YOUR WORK.Kim's percentile rank is ___________.

QUESTION 9

On a standardized test of mathematical ability, Kim scored a 42, and John scored a 35. The distribution of test scores for the population is normal, with a mean of 33 and a standard deviation of 6.3. SHOW YOUR WORK.The percentage of the population which scored below John is __________.

QUESTION 10

On a standardized test of mathematical ability, Kim scored a 42, and John scored a 35. The distribution of test scores for the population is normal, with a mean of 33 and a standard deviation of 6.3. SHOW YOUR WORK.The percentage of the population that scored between Kim and John is __________.

QUESTION 11

Assume the probabilities of a child being allergic to the following foods are as follows (SHOW YOUR WORK): .016 for nuts .048 for dairy .039 for gluten Calculate the probability that a child is NOT allergic to nuts.

QUESTION 12

Assume the probabilities of a child being allergic to the following foods are as follows (SHOW YOUR WORK): .016 for nuts .048 for dairy .039 for gluten Calculate the probability that a child is NOT allergic to dairy AND NOT allergic to gluten.

QUESTION 13

Assume the probabilities of a child being allergic to the following foods are as follows (SHOW YOUR WORK): .016 for nuts .048 for dairy .039 for gluten Calculate the probability that a child is allergic to nuts OR is allergic to dairy OR is allergic to gluten

QUESTION 14

Assume the probabilities of a child being allergic to the following foods are as follows (SHOW YOUR WORK): .016 for nuts .048 for dairy .039 for gluten Calculate the probability that a child is allergic to dairy AND is allergic to gluten.

Answer 1