Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1. The number of successes and the sample size are given for a simple random sample from a population. Decide whether using the one-proportion z-test is appropriate.

x = 3, n = 80, H0: p = 0.04, Ha: p > 0.04

Not appropriate

Appropriate

Use the two-proportions z-interval procedure to obtain the required confidence interval for the difference between two population proportions. Assume that independent simple random samples have been selected from the two populations.

2. A survey of students at one college found that 57 of 96 randomly selected freshmen and 85 of 118 randomly selected sophomores lived off campus. Find a 98% confidence interval for the difference between the proportions of freshmen and sophomores at this college who live off campus.

-0.278 to 0.025
0.468 to 0.721
-0.254 to 0.721
0.444 to 0.744

Use the one-proportion z-interval procedure to find the required confidence interval.

3. In a sample of 713 patients who underwent a certain type of surgery, 22% experienced complications. Find a 90% confidence interval for the proportion of all those undergoing this surgery who experience complications.

0.2045 to 0.2355
0.2001 to 0.2399
0.1892 to 0.2508
0.1945 to 0.2455

Find the P-value for the indicated hypothesis test.

4. In a sample of 47 adults selected randomly from one town, it is found that 9 of them have been exposed to a particular strain of the flu. Find the P-value for a hypothesis test to determine whether the proportion of all adults in the town that have been exposed to this strain of the flu differs from 8%.

0.0262
0.0024
0.0048
0.0524

Find the required sample size without making a guess for the observed value of .

5. A manufacturer wishes to estimate the proportion of washing machines leaving the factory that are defective. Obtain a sample size that will ensure a margin of error of at most 0.014 for a 97% confidence interval.

39
38
6006
6007

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M91767072
  • Price:- $25

Priced at Now at $25, Verified Solution

Have any Question? 


Related Questions in Statistics and Probability

A researcher conducted a factor analysis of five items on

A researcher conducted a factor analysis of five items on which participants rated their current mood. Interpret the factor matrix that emerged from this factor analysis. Specifically, what do the three factors appear to ...

Problem 1somewhere in the milky way galaxy a class of 2000

Problem 1 Somewhere in the Milky Way Galaxy, a class of 2,000 students took a course in Astronomy.  The first exam scores and the final exam percentage reached earth, but transmission broke off after only a dozen student ...

Suppose that a certain college class contains 49 students

Suppose that a certain college class contains 49 students. Of these, 24 are seniors, 26 are English majors, and 9 are neither. A student is selected at random from the class. (a) What is the  probability  that the studen ...

Discuss the changes to european imperialism between the

Discuss the changes to European imperialism between the World Wars.

Prior to distributing a large shipment of bottled water a

Prior to distributing a large shipment of bottled water, a beverage company would like to determine whether there is evidence that the true mean fill volume of all bottles di↵ers from 600 ml, which is the amount stated o ...

The manager of the cheesecake factory in boston reports

The manager of The Cheesecake Factory in Boston reports that on six randomly selected weekdays, the number of customers served was 120, 130, 100, 205, 185, and 220. She believes that the number of customers served on wee ...

1 what three rules govern the construction of a grouped

1. What three rules govern the construction of a grouped frequency distribution? 2. What is the difference between a histogram and a bar graph? 3. Distinguish among the median, mode, and mean.

A biology instructor believes that the average quiz score

A Biology instructor believes that the average quiz score is a good predictor of final exam score. A random sample of 10 students produced the following data where x is the average quiz score and y is the final exam scor ...

Explain how the picture below helps us understand

Explain how the picture below helps us understand Christianity. Who were the thinkers that used these philosophers to understand their faith?

1 if the calculated value of t is less than the critical

1. If the calculated value of t is less than the critical value, do you reject or fail to reject the null hypothesis? Explain. 2. If you reject the null hypothesis (and conclude that the independent variable has an effec ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro