21)
Polls and surveys taken over the internet are statistically faultyin that the "data" (the people) choose whether or not they will bein the sample. This type of sample is
Stratified
Cluster
Convenience
Voluntary Response
22)
The layers of a stratified sample are referred to "observationallevels"
TRUE
FALSE
23)
If one made a list of the Governors' salaries from each state, thelist would be considered a "census"
TRUE
FALSE
24)
When some individuals chosen to be in the samples refuse toparticipate, this is said to occur:
nonresponse
variability
sampling frame
undercoverage
25)
If one made a list of the Governors' salaries from each state,the list would be considered a "sample"
TRUE
FALSE
26)
If a population size is large relative to the sample size, theprecision of results will be the same whether the population sizeis 20,000 or 20 million
TRUE
FALSE
27)
A value generated from the population data
population
sample
parameter
statistic
28)
If the probability of an event is 0.384, then the probability ofthe complement of this event would be ____
29) A jar contains 6 red marbles, 9 white marbles, 9 greenmarbles, and 6 blue marble. What is the probability that, if onemarble is randomly selected, the marble will be not red? Round tothree decimal places
30)
If there are 2 lefthanded people in a group of size 47, we wouldsay the probability of randomly selecting a righthander from thegroup is_______ (round to the third decimal place)
31)
A jar contains 4 red marbles, 8 white marbles, 5 green marbles, and9 blue marble. What is the probability that, if one marble israndomly selected, the marble will be either green or blue? Roundto three decimal places
32)
A jar contains 5 red marbles, 13 white marbles, 3 red gumballs, and4 white gumballs. If one object is selected at random, and younotice it is red, what is the probability it is a gumball giventhat is one of the red things? Round to 3 decimal places
33)
In a statistics class, we find that at the end of the semester 3people have an A, 7 people have a B, 11 people have a C, 2 peoplehave a D, and 1 people have an F. If we randomly select one ofthese people, what is the probability the person has at least a C?Round to three decimal places
34) A jar contains 35 $1 bills 8 $5 bills 4 $10 bills 3 $20 bills 3 $50 bills 1 $100 bill Every day for one year (365 times) you get to randomly pick a billfrom the jar (the jar is refilled after every pick). For the year,what is the expected value of the total money you havewon? Round to the nearest dollar
35) A jar contains 23 $1 bills 7 $5 bills 5 $10 bills 2 $20 bills 3 $50 bills 2 $100 bill Every day for one year (365 times) you get to randomly pick a billfrom the jar (the jar is refilled after every pick). For the year,what is the expected value of the total money you havewon? Round to the nearest dollar
21) Polls and surveys taken over the internet are statistically faulty in that the "data" (the people) choose whether or
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