Quiz 11 (Week 12) One sample Proportion inference: Attempt review PDF

Preview

Summary

Download Quiz 11 (Week 12) One sample Proportion inference: Attempt review PDF

Description

SCI1020 - Introduction to Statistical Reasoning - S2 2019 Dashboard /

/ SCI1020 - S2 2019 / Weekly Quiz On-line / Quiz 11 (W

Print friendly format Question 1

The American Veterinary Medical Association conducted a survey of veterinar treat large animals (cows, horses, etc.). The survey was mailed to a random sa country and of these, 88 responded that they do not treat large animals. Reference: Ref 18-2

The standard error SE of the sample proportion Select one:

of clinics that do not treat la

The sample proportion

that felt the economy's state was the most urgent na

Select one: a. 0.473. b. 0.643. ! c. 0.500. d. 0.357.

The correct answer is: 0.643.

Question 3

An inspector inspects large truckloads of potatoes to determine the proportion using the potatoes to make potato chips. Unless there is clear evidence that th the shipment. He will test the hypotheses

H0: p = 0.10, H a: p < 0.10. He selects an SRS of 100 potatoes from the large number of potatoes on the t are found to have major defects. Reference: Ref 18-6

Using the "plus four method, a 95% confidence interval for the true proportion is Select one: a. 0.051 to 0.103. b. 0.026 to 0.128. ! c. 0.009 to 0.111.

Select one: a. 80 to 96. b. 0.704 to 0.780. c. 0.610 to 0.850. d. 0.646 to 0.803. !

The correct answer is: 0.646 to 0.803.

Question 5

A local board of education conducted a survey of residents in the community c local ballot. They randomly selected 850 residents in the community and conta surveyed, 410 supported the property tax levy. Let p represent the proportion o property tax levy. Reference: Ref 18-3

A 90% confidence interval for p is Select one: a. 0.4489 to 0.5159. b. 0.4543 to 0.5105. ! c. 0.4487 to 0.5161. d. 0.4463 to 0.5185.

The correct answer is: 0.4543 to 0.5105.

The correct answer is: below 0.01.

Question 7

According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA), engage in “binge drinking” behavior, having five or more drinks in one occasion wonders if the proportion of students enrolled at her college that binge drink is a commissioned study, 348 students are selected randomly from a list of all st admitted to having engaged in binge drinking. Reference: Ref 18-4

The college president is more interested in testing her suspicion that the prop is lower than the national proportion of 0.41. Her staff tests the hypotheses H 0: p = 0.41, H a: p < 0.41. The P-value is Select one: a. below 0.05. b. between 0.15 and 0.20. c. between 0.10 and 0.15. d. between 0.05 and 0.10. "

The correct answer is: between 0.10 and 0.15.

Question 8

c. There is strong evidence that the proportion of students at this college t proportion of 0.41. d. There is moderate but not strong evidence that the proportion of binge d the national proportion of 0.41.

The correct answer is: There is little evidence to support a conclusion that the that binge drink is lower than the national proportion of 0.41.

Question 9

I read an article about a new drug which stated that "the incidence of side effe want to know if the results are significant at α = 10%. With the information give Select one: a. I will not reject the null hypothesis of no difference at 10%. b. I will reject the null hypothesis of no difference at 10%. c. There is not enough information given. !

This is correct. We know th

how much more. Without the actual P-value for the test, we cannot make a

The correct answer is: There is not enough information given.

Question 10

A TV news program conducts a call-in poll about a proposed city ban on smok

Jump to......