Terms and Basic Knowledge
Which sampling method uses a sample where every nth person is chosen from a population?
a)random sampling
b)systematic sampling
c)stratified sampling
d)cluster sampling
What is systematic sampling? (b)
What is the probability of pulling a red card out of a standard deck of cards
a) 16/52
b) 13/52
c)3/4
d) 1/2
What is the difference between a Statistic and a Parameter?
a) a statistic is from a sample and a parameter is from a specific population
b)a statistic is from a population and a parameter is from a sample
c) a statistic is from multiple populations and a parameter is from one population
d ) a sample is from one population and a parameter is from multiple populations
What type of hypothesis testing goes with each symbol?
μ, ρ, σ
a) μ: proportion
ρ:mean
σ: standard deviation
b)μ: mean
ρ: proportion
σ: standard deviation
c)μ: sample population
ρ: probability
σ: population variance
d)μ: mean
ρ: probability
σ: standard deviation
What is
b)μ: mean
ρ: proportion
σ: standard deviation
Determine the conclusion for the following experiment.
A survey of 103 dogs show that 56 prefer stuffed toys to hard toys. Use a .05 significance level to test the claim that more than 40% of dogs prefer stuffed toys. The p value is .1306
a) Since the p value is less , we reject H0 and we can support the claim that more than 40% of dogs prefer stuffed toys.
b)Since the p value is more, we fail to reject H0 and we cannot support the claim that more than 40% of dogs prefer stuffed toys.
c) Since the p value is less, we fail to reject H0 and we can support the claim that more than 40% of dogs prefer stuffed toys.
d)Since the p value is more, we reject H0 and we cannot support the claim that more than 40% of dogs prefer stuffed toys.
What is Since the p value is more, we fail to reject H0 and we cannot support the claim that more than 40% of dogs prefer stuffed toys? (b)
What is the level of measurement that temperature fall under?
a)nominal level of measurement
b)ordinal level of measurement
c)interval level of measurement
d) ratio level of measurement
What is interval level of measurement? (c)
What is the probability of drawing a 4 or a king?
a) 2/13
b) 4/52
c)6/52
d)3/26
What is 2/13? (a)
Find the mean for the data set
34 23 12 30 26 24
a)24.8
b)25
c)23.4
d)30
What is 24.8? (a)
What kind of test would you run for the following problem?
A surgery of 3,453 pet owners shows that 2,567 of them like dogs. Use a .05 significance level to test the claim that more than 60% of pet owners like dogs.
a)x2 test x2= 1.90
b) t-test t= 1.90
c)1- prop z test z= 17.20
d)1-prop z test z=17.21
What is 1- prop z-test z= 17.20 ? (c)
In the following experiment state your decision and the reasoning. This is a right tail test.
Critical Value= 24.09 Test Statistic=26.509
a) The test statistic is less than the critical value,
therefore the test statistic does not fall in the rejection region, so we FTRH0
b) The test statistic is less than the critical value,
therefore the test statistic falls in the rejection region, so we Reject H0
c) The test statistic is greater than the critical value therefore the test statistic falls in the rejection region, so we Reject H0
d) The test statistic is greater than the critical value therefore the test statistic does not fall in the rejection region, so we FTRH0
What is The test statistic is greater than the critical value therefore the test statistic does not fall in the rejection region, so we FTRH0(d)
Calculate the Class Width
Age Frequency
10-20 4
21-31 7
32-42 3
a) 13
b)9
c)11
d)10
What is Class Width = 11 ? (c)
Past studies have revealed that 80% of students own a dog. From a survey of 27 students what is the probability that 20 students own a dog?
a) .286
b) 26.835
c) 4.654
d) .131
What is .131? (d)
Find the median of the data
142 131 121 122 134 146
a)121
b)132.5
c)106
d)132.6
What is 132.5? (b)
Find the linear coefficient and p value for the following information
Number of treats eaten Number of dogs in the park
6 13
3 9
9 14
8 10
a) p= .3648 r=.5351
b) p= .4648 r=.6352
c)p=.3659 r=.6352
d)p=.3649 r=.6351
What is p=.3649 r=.6351 ? (d)
What is the correct null for the following test?
Yellow Brown Black
Dogs 13 16 12
Cats 12 9 20
a)The color of the animal is not related to its species. They are independent.
b)The color of the animal is not related to its species. They are dependent.
c)The color of the animal is related to its species. They are dependent
d)The colors of the animal is related to its species. They are independent.
What is The color of the animal is not related to its species. They are independent. (a)
What is one of the differences between a histogram chart and a Pareto chart?
a) A histogram touches the y axis a Pareto chart does not
b) a histogram chart is organized from the lowest frequency to the highest
c) a Pareto chart does not touch the y axis
d) a Pareto chart is organized from the highest frequency to the lowest
What is a Pareto chart is organized from the highest frequency to the lowest? (d)
How many different ways can 4 office titles be chosen from a group of 16 people?
a)1820
b)43680
c)2.09
d)24
What is 1820? (a)
Decide if the data set is unimodal, bimodal, or multimedial and give the value
8 9 7 6 9 7 4 5
a)unimodal, 4
b)bimodial ,9 &7
c)multimodial, 7 & 8 & 9
d) zero
What is bimodial, 9 & 7? (b)
For the following experiment the level of significance is .05 and the df=2
p=.3649 r=.6351 y=7.79+.571x
What is the conclusion to the test?
a)Since the r value is less that the p value, we reject H0.
b) Since the p value is less than .05, we fail to reject H0.
c)Since the r value is more than the p value, we fail to reject H0.
d) Since the p value is more than .05, we fail to reject H0.
What is since the p value is more than .05, we fail to reject H0? (d)
What is the best estimate of the following y value for the given x and why? X= 23 The Mean is 12.
x 6 10 12 16 20 22
y 4 7 10 14 18 19
a) 22583.93 because you enter the x value into the equation
b) -22583.93 because you enter the x value into the equation
c) 20 because you estimate from the chart
d) 12 because you use the mean value since 23 is not in the range of the given x values
What is 12 because you use the mean value since 23 is not in the range of the given x values? (d)
Find the range of the values below
110 34 65 112 47 36 92 87 54
a) 78
b)637
c)318
d)146
What is 78? (a)
Find the probability that a female will be chosen given that it is a golden retriever
Golden retriever Pug Shepard
Female 31 16 27
Male 32 13 34
a).851
b).419
c) .492
d).841
What is .492? (c)
9 6 7 9 8 5 8
a) the range, 4
b) an estimate of variance, 2
c) an estimate of standard deviation, 1
d) an estimate of mean, 7
What is an estimate of standard deviation, 1? (c)
Find the linear correlation of an experiment determine what the value represent.
#of balls caught in a game The # of practice(days)
12 84
14 86
9 87
10 85
a) r=-.2911 we can say there is a weak negative correlation between the number of practice days and the number of balls caught during a game
b) r=-.2911 we can say there is a strong negative correlation between the number of practice days and the number of balls caught during a game
c) r=2.911 we can say there is a strong positive correlation between the number of practice days and the number of balls caught during a game
d) r=.2911 we can say there is a weak positive correlation between the number of practice days and the number of balls caught during a game
what is r= -.2911 we can say there is a weak negative correlation between the number of practice days and the number of balls caught during a game (a)
What is the best estimate of the y value for the given x= 18? The mean is 12.
x 6 10 12 16 20 22
y 4 7 10 14 18 19
a)15.5
b)y=15.606
c)y=12
d)y=17678
What is y=15.606? (b)