MATH 110 Statistics Final Exam – Portage Learning –
2025/2026 Complete Questions & Correct Verified
Answers | Guaranteed Pass
Suppose the weights of newborn babies is normally distributed with a mean of 7 lbs and a
standard deviation of 1.5 pounds. How much would a baby have to weigh to be in the top 10% of
birthweights? - ANSWER 8.92
In which of the following problems, would using degrees of freedom be necessary? - ANSWER
x̅ distribution, s = 32.4, n = 30
To show a cause/effect relationship between to variables, which of the following could be used?
- ANSWER a controlled experiment
Which one of these p-values provides the strongest evidence against the null hypothesis (H0) in
favor of the alternative hypothesis (Ha)? - ANSWER .0001
The FIVE-NUMBER SUMMARY for a given set of test scores is:
34 58 77 83 97
,A score of 58 is which of the following? - ANSWER Q1
Which of the following is a discrete distribution? - ANSWER binomial
An economist wanted to estimate the mean expenditure on snacks at movie theaters in a certain
city. A random sample of 25 moviegoers revealed a mean amount of $6.25 and a standard
deviation in the sample of $0.75. Obtain a 95% confidence interval to estimate the mean amount
spent on snacks at theaters in this city. - ANSWER $5.94 < μ < $6.56
The FIVE-NUMBER SUMMARY for a given set of test scores is:
34 58 77 83 97
What percent of the scores is between 83 and 97? - ANSWER 25%
Which of the following correlation coefficients indicates the strongest linear relationship
between two
variables x and y? - ANSWER -0.84
,The Z-value for a 95% confidence interval estimation for μ is - ANSWER 1.960
The ages of the runners in a 10K race normally distributed with a mean of 45 and a standard
deviation of 7. What is the probability that a randomly chosen runner is older than 30? -
ANSWER .9838
What percent of the 80 people in this sample have Type A blood?
blood type frequency
A 16
B 24
O 32
AB 8 - ANSWER 20%
The ages of 20 people at a small party are given in the stem plot below. Use it to find the value
for the 48th percentile (P48).
2| 6 7
3| 0 2 5 6 8
, 4| 1 1 3 4 6 8 9
5| 2 4 4 5 8
6| 0 - ANSWER 43
An experiment was conducted and the following things were done to ensure that the results
would be valid.
a large number of subjects was used to insure the reliability of the results
neither the subjects nor the experimenter knew who received which treatment until the
conclusion of the experiment
the names of the subjects were placed in a box, mixed, and drawn in order to assign the subjects
to their treatment group
there was a group that did not receive the experimental treatment so that the results between the
two groups could be compared
Which list of requirements for a good experiment matches the order of things done given above?
- ANSWER replication, double blindness, randomization, control
2025/2026 Complete Questions & Correct Verified
Answers | Guaranteed Pass
Suppose the weights of newborn babies is normally distributed with a mean of 7 lbs and a
standard deviation of 1.5 pounds. How much would a baby have to weigh to be in the top 10% of
birthweights? - ANSWER 8.92
In which of the following problems, would using degrees of freedom be necessary? - ANSWER
x̅ distribution, s = 32.4, n = 30
To show a cause/effect relationship between to variables, which of the following could be used?
- ANSWER a controlled experiment
Which one of these p-values provides the strongest evidence against the null hypothesis (H0) in
favor of the alternative hypothesis (Ha)? - ANSWER .0001
The FIVE-NUMBER SUMMARY for a given set of test scores is:
34 58 77 83 97
,A score of 58 is which of the following? - ANSWER Q1
Which of the following is a discrete distribution? - ANSWER binomial
An economist wanted to estimate the mean expenditure on snacks at movie theaters in a certain
city. A random sample of 25 moviegoers revealed a mean amount of $6.25 and a standard
deviation in the sample of $0.75. Obtain a 95% confidence interval to estimate the mean amount
spent on snacks at theaters in this city. - ANSWER $5.94 < μ < $6.56
The FIVE-NUMBER SUMMARY for a given set of test scores is:
34 58 77 83 97
What percent of the scores is between 83 and 97? - ANSWER 25%
Which of the following correlation coefficients indicates the strongest linear relationship
between two
variables x and y? - ANSWER -0.84
,The Z-value for a 95% confidence interval estimation for μ is - ANSWER 1.960
The ages of the runners in a 10K race normally distributed with a mean of 45 and a standard
deviation of 7. What is the probability that a randomly chosen runner is older than 30? -
ANSWER .9838
What percent of the 80 people in this sample have Type A blood?
blood type frequency
A 16
B 24
O 32
AB 8 - ANSWER 20%
The ages of 20 people at a small party are given in the stem plot below. Use it to find the value
for the 48th percentile (P48).
2| 6 7
3| 0 2 5 6 8
, 4| 1 1 3 4 6 8 9
5| 2 4 4 5 8
6| 0 - ANSWER 43
An experiment was conducted and the following things were done to ensure that the results
would be valid.
a large number of subjects was used to insure the reliability of the results
neither the subjects nor the experimenter knew who received which treatment until the
conclusion of the experiment
the names of the subjects were placed in a box, mixed, and drawn in order to assign the subjects
to their treatment group
there was a group that did not receive the experimental treatment so that the results between the
two groups could be compared
Which list of requirements for a good experiment matches the order of things done given above?
- ANSWER replication, double blindness, randomization, control
