Question 1
Is Drug B superior to the currently used Drug A in treating pancreatitis?
Observational
Case-controlled observational
Double blind experiment
Single blind experiment
Question 2
Research shows that 14% of 6th graders in K–6 schools have tried cigarettes and 61% of 7th graders in 7–9 middle schools have tried cigarettes. What is the absolute increase, to the nearest percent?
0.77
3.36
4.36
0.47
Question 3
Consider the following exam scores. 76 72 87 96 99 75 84 85 84 94 92 What is the range of the scores and what would be appropriate bins to place them in?
76–92; Bins: 70–80, 80–90, & 90–100
72–99; Bins: 70–75, 76–80, 81–85, 86–90, 91-95, & 96–100
72–99; Bins: 70–75, 75–80, 80–85, 85–90, 90–95, & 95–100
76–99; Bins: 70–75, 75–80, 80–85, 85–90, 90–95, & 95–100
Question 4
A bar graph in which the bars are arranged in frequency order is a:
dotplot.
pie chart.
line chart.
pareto chart.
Question 5
Amtrak trains from Chicago to Portland arrived at Havre, MT, where they make a crew change, the following numbers of minutes late: 26, 17, 245, 19, 38, 42, 11, 0, 14, 44 Find the mean number of minutes late at Havre (to one decimal place).
60
52.4
48.6
45.6
Question 6
Which one of the three variables below is most likely to be normally or nearly normally distributed? A. The results of throwing a die 1000 times B. The lengths of randomly selected white pine needles C. The number of people standing in line at five cash registers
A
B
C
None of the above
Question 7
The advertising for a cold remedy claimed that no other cold remedy acted faster. In an experiment to compare that remedy with another one, it did act faster on average, but the result wasn't significant. What does this mean?
The difference was so small that it could have happened by chance even if the remedies were equivalent.
The difference was so small that it could have happened by chance even if the remedies weren't equivalent.
The probability of the observed difference occurring by chance if the two remedies are equivalent was less than 0.05.
The population mean response times are different, but the samples didn't show it.
Question 8
There are 318 teachers at a college. Among a sample of 115 teachers from this college, 67 have doctorates. Based on this sample, estimate the population proportion of teachers at this college with doctorates.
0.42
185
0.61
0.58
Question 9
The standard score for a two-tailed test is 2.0. What is the P-value?
0.9772
0.0456
0.0228
97.72
Question 10
The _______ hypothesis states that the variables are independent (there's no relationship between them) and the _______ hypothesis states that there's a relationship between the two variables.
population; sample
alternative; null
sample; population
null; alternative
Is Drug B superior to the currently used Drug A in treating pancreatitis?
Observational
Case-controlled observational
Double blind experiment
Single blind experiment
Question 2
Research shows that 14% of 6th graders in K–6 schools have tried cigarettes and 61% of 7th graders in 7–9 middle schools have tried cigarettes. What is the absolute increase, to the nearest percent?
0.77
3.36
4.36
0.47
Question 3
Consider the following exam scores. 76 72 87 96 99 75 84 85 84 94 92 What is the range of the scores and what would be appropriate bins to place them in?
76–92; Bins: 70–80, 80–90, & 90–100
72–99; Bins: 70–75, 76–80, 81–85, 86–90, 91-95, & 96–100
72–99; Bins: 70–75, 75–80, 80–85, 85–90, 90–95, & 95–100
76–99; Bins: 70–75, 75–80, 80–85, 85–90, 90–95, & 95–100
Question 4
A bar graph in which the bars are arranged in frequency order is a:
dotplot.
pie chart.
line chart.
pareto chart.
Question 5
Amtrak trains from Chicago to Portland arrived at Havre, MT, where they make a crew change, the following numbers of minutes late: 26, 17, 245, 19, 38, 42, 11, 0, 14, 44 Find the mean number of minutes late at Havre (to one decimal place).
60
52.4
48.6
45.6
Question 6
Which one of the three variables below is most likely to be normally or nearly normally distributed? A. The results of throwing a die 1000 times B. The lengths of randomly selected white pine needles C. The number of people standing in line at five cash registers
A
B
C
None of the above
Question 7
The advertising for a cold remedy claimed that no other cold remedy acted faster. In an experiment to compare that remedy with another one, it did act faster on average, but the result wasn't significant. What does this mean?
The difference was so small that it could have happened by chance even if the remedies were equivalent.
The difference was so small that it could have happened by chance even if the remedies weren't equivalent.
The probability of the observed difference occurring by chance if the two remedies are equivalent was less than 0.05.
The population mean response times are different, but the samples didn't show it.
Question 8
There are 318 teachers at a college. Among a sample of 115 teachers from this college, 67 have doctorates. Based on this sample, estimate the population proportion of teachers at this college with doctorates.
0.42
185
0.61
0.58
Question 9
The standard score for a two-tailed test is 2.0. What is the P-value?
0.9772
0.0456
0.0228
97.72
Question 10
The _______ hypothesis states that the variables are independent (there's no relationship between them) and the _______ hypothesis states that there's a relationship between the two variables.
population; sample
alternative; null
sample; population
null; alternative
No comments:
Post a Comment