Math 140 Final Exam Prep |2024 -2025 LATEST UPDATED |
COMPREHENSIVE QUESTIONS WITH 100% RATED ANSWERS |
GUARANTEED TO PASS!!
A researcher measures the correlation between two variables. This correlation tells us
____________. - (answers)the strength and direction of a linear association between the two
variables.
A _________ characterizes a population, whereas a ________ describes a sample. -
(answers)parameter; statistic
If a distribution is heavily skewed to the left, what relationship between the mean and median is
most likely? - (answers)mean < median
A class of 30 introductory statistics students took a 15 item quiz, with each item worth 1 point.
The standard deviation for the score distribution is 0. You know that: - (answers)Everyone
correctly answered the same number of items.
You get a phone call about an upcoming election. They want to ask some questions for their poll.
There is something wrong this sample. Why? - (answers)This is a voluntary response sample and
so it is probably biased.
一个充满爱心的人，能温暖他人，
传递希望。人与人之间的情感交流
In a study of 300 women with a particular illness, the women were given a new medication and
then checked. What kind of study is this? - (answers)This is an experimental study.
Suppose we wish to test the null hypothesis that a new drug is not effective in reducing blood
pressure versus the alternative that it does reduce blood pressure. A ______ error would be made
by concluding that the new drug is ______ in blood pressure reduction if in fact the new drug is
______ in blood pressure reduction. - (answers)type 1; effective; not effective
COMPREHENSIVE QUESTIONS WITH 100% RATED ANSWERS |
GUARANTEED TO PASS!!
A researcher measures the correlation between two variables. This correlation tells us
____________. - (answers)the strength and direction of a linear association between the two
variables.
A _________ characterizes a population, whereas a ________ describes a sample. -
(answers)parameter; statistic
If a distribution is heavily skewed to the left, what relationship between the mean and median is
most likely? - (answers)mean < median
A class of 30 introductory statistics students took a 15 item quiz, with each item worth 1 point.
The standard deviation for the score distribution is 0. You know that: - (answers)Everyone
correctly answered the same number of items.
You get a phone call about an upcoming election. They want to ask some questions for their poll.
There is something wrong this sample. Why? - (answers)This is a voluntary response sample and
so it is probably biased.
一个充满爱心的人，能温暖他人，
传递希望。人与人之间的情感交流
In a study of 300 women with a particular illness, the women were given a new medication and
then checked. What kind of study is this? - (answers)This is an experimental study.
Suppose we wish to test the null hypothesis that a new drug is not effective in reducing blood
pressure versus the alternative that it does reduce blood pressure. A ______ error would be made
by concluding that the new drug is ______ in blood pressure reduction if in fact the new drug is
______ in blood pressure reduction. - (answers)type 1; effective; not effective
