Question: From the same survey as in Exercise 9, 294 of the 409 respondents who reported earning less than $30,000 per year said they were social

From the same survey as in Exercise 9, 294 of the 409 respondents who reported earning less than $30,000 per year said they were social networking users. At the other end of the income scale, 333 of the 504 respondents reporting earnings of $75,000 or more were social networking users.

a) Find the proportions of each income group who are social networking users.

b) What is the difference in proportions?

c) What is the standard error of the difference?

d) Find a 95% confidence interval for the difference between these proportions.

Step by Step Solution

★★★★★

3.43 Rating (178 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a The proportion of those earning 30000 who reported social network users p 1 294 409 0718... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

452-M-S-S-I (788).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Find the 90% confidence interval for the difference between two means based on this information about two samples. Assume independent samples from normal populations. Std. Dev. Number 20 15 Mean 35...

Find a 95% confidence interval for the difference between the mean amount of the highest cost item purchased for the High customer category and the similar mean for the Medium customer category. Do...

Find a 95% confidence interval for the difference between the following two proportions: the proportion of female customers who order during the evening and the proportion of male customers who order...

=+. From the same survey as in Exercise 9, 294 of the 409 respondents who reported earning less than $30,000 per year said they were social networking users. At the other end of the income scale, 333...

2 stats Market Researchers have become more interested in the potential of social networking sites. But they need to understand the demographics of social networking users. A recent survey showed...

Market Researchers have become more interested in the potential of social networking sites. But they need to understand the demographics of social networking users. A recent survey showed that 22 of...

use 4 decimals. Market Researchers have become more interested in the potential of social networking sites. But they need to understand the demographics of social networking users. A recent survey...

In 2018, Revelation, Inc., reported the following statistics. 2018 $3.60 Basic Earnings Per Share In 2009, their comparative earnings per share were reported as follows. C. 2017 $2.70 2019 $3.61 2018...

Among college students who hold part-time jobs during the school year, the distribution of the time spent working per week is approximately normally distributed with a mean of 20.20 hours and a...

46. LO.6, 9 At the time of his death, Garth was involved in the following arrangements. He held a life estate in the Myrtle Trust with the remainder passing to Garths adult children. The trust was...

Which of these is accurate regarding risk management? A. Organizations are not likely to perceive risk as a threat to project success B. It has its origins in the uncertainty present in all projects...

Suppose an experiment has five equally likely outcomes: E1, E2, E3, E4, E5. Assign probabilities to each outcome and show that the requirements in equations (4.3) and (4.4) are satisfied. What method...

A decision maker subjectively assigned the following probabilities to the four outcomes of an experiment: P(E1) = .10, P(E2) = .15, P(E3) = .40, and P(E4) = .20. Are these probability assignments...

A company that manufactures toothpaste is studying five different package designs. Assuming that one design is just as likely to be selected by a consumer as any other design, what selection...

Bond X is a premium bond making annual payments. The bond has a coupon rate of 8.4 percent, a YTM of 6.4 percent, and has 17 years to maturity. Bond Y is a discount bond making annual payments. This...

Using the list of threats to InfoSec presented in this chapter, identify and describe three instances of each that were not mentioned in the chapter.

Bond Valuation and Changes in Maturity and Required Returns Suppose Hillard Manufacturing sold an issue of bonds with a 1 0 - year maturity, a $ 1 , 0 0 0 par value, a 1 0 % coupon rate, and...