Chapter 9: Q. 16 (page 537)
A group of doctors is deciding whether or not to perform an operation. Suppose the null hypothesis, , is: the surgical procedure will go well. Which is the error with the greater consequence?
In this case, the error with the greater consequence is that the type II error.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
A bottle of water is labeled as containing 16 fluid ounces of water. You believe it is less than that. What type of test would you use?
A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening night midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that 11 of them attended the midnight showing. At a 1% level of significance, an appropriate conclusion is:
a. There is insufficient evidence to conclude that the percent of EVC students who attended the midnight showing of Harry Potter is less than 20%.
b. There is sufficient evidence to conclude that the percent of EVC students who attended the midnight showing of Harry Potter is more than 20%.
c. There is sufficient evidence to conclude that the percent of EVC students who attended the midnight showing of Harry Potter is less than 20%.
d. There is insufficient evidence to conclude that the percent of EVC students who attended the midnight showing of Harry Potter is at least 20%.
Itโs a Boy Genetics Labs claim their procedures improve the chances of a boy being born. The results for a test of a single population proportion are as follows:
-value.
Interpret the results and state a conclusion in simple, non-technical terms.When a new drug is created, the pharmaceutical company must subject it to testing before receiving the necessary permission from the Food and Drug Administration (FDA) to market the drug. Suppose the null hypothesis is โthe drug is unsafe.โ What is the Type II Error?
a. To conclude the drug is safe when in, fact, it is unsafe.
b. Not to conclude the drug is safe when, in fact, it is safe.
c. To conclude the drug is safe when, in fact, it is safe.
d. Not to conclude the drug is unsafe when, in fact, it is unsafe.
In , Life Magazine reported that the year-old mother of three worked, on average, an hour week. Recently,
many groups have been studying whether or not the women's movement has, in fact, resulted in an increase in the average
work week for women (combining employment and at-home work). Suppose a study was done to determine if the mean
work week has increased. women were surveyed with the following results. The sample mean wasthe sample
standard deviation was ten. Does it appear that the mean work week has increased for women at the role="math" localid="1650381098713" level?
What do you think about this solution?
We value your feedback to improve our textbook solutions.
