Question: A researcher would like to determine, within 3 percentage points and with 90% confidence, the percentage of Americans who have a certain characteristic. If she

A researcher would like to determine, within 3 percentage points and with 90% confidence, the percentage of Americans who have a certain characteristic. If she feels certain that the percentage is somewhere between 20% and 40%, how many persons should be included in the sample?

Step by Step Solution

★★★★★

3.33 Rating (168 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

For the 90 level of confidence z 1645 The maximum likely error ... 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)

522-M-S-O-T-S-E (508).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Good Fortune Co. is a small public company that operates a chain of furniture stores throughout Canada. The company was founded by Kate Homewood, who still owns 25% of the outstanding shares and who...

Suppose a researcher would like to determine whether one grade of gasoline produces better gas mileage than another grade. Twenty cars are randomly divided into two groups, with 10 cars receiving one...

A researcher would like to determine whether people really can tell the difference between bottled water and tap water. Participants are asked to taste two unlabeled glasses of water, one bottled and...

A recent survey of practicing psychotherapists revealed that 25% of the individuals responding agreed with the statement, "Hypnosis can be used to recover accurate memories of past lives" (Yapko,...

9.97 A researcher would like to determine, within 3 percentage points and with 90% confidence, the percentage of Americans who have a certain characteristic. If she feels certain that the percentage...

Identify the choice that best completes the statement or answers the question. ____ 1. A survey conducted by Black Flag asked whether or not the action of a certain type of roach disk was effective...

Please help with these if you can, the distribution tables are at the bottom \f\fCompute the critical value 2\" ,2 that corresponds to a 93% level of condence. Click here to View the standard normal...

Student: Brandy Freytag Date: 7/11/16 Instructor: Doug LeVeque, Beverly Wood Assignment: MSL Chapter 7 HW Course: MATH_211_1841_May_2016(LeVeque) 1. Two symbols are used for the mean: and x. a. Which...

According to a 2018 poll, 37% of adults from a certain region were very likely to watch some coverage of a certain sporting event on television. The survey polled 1,200 adults from the region and had...

Assume you wish to estimate a population proportion,p. For the given margin of error and confidence level, determine the sample size required. A researcher wishes to estimate the proportion of people...

Arlin Fabrication Company produces tools on a job order basis. During May, two jobs were completed, and the following costs were incurred: Other factory costs for the month totaled $16,800. Factory...

Find a basis for and the dimension of the following subspaces: (a) The space of solutions to the linear system Ax = 0, where (b) The set of all quadratic polynomials p(x) = ax2 + bx + c that satisfy...

Mr . Trevino notes that a Private Fee - for - Service ( PFFS ) plan available in his area has an attractive premium. He wants to know if he must use doctors in a network as his current HMO plan...

What is the racial and ethnic composition of the U.S. Army, Air Force, Navy, and Marines? How many Blacks as a proportion of the Army are in officer positions? Choose one other military organization...

Starbucks is a coffee company-a big coffee company. During a 10-year period, the number of Starbucks locations grew from 165 to over 8,800 stores in 50 countries. The following is adapted from...

Reconfigure the Gantt chart in problem 2 to include some different predecessor relationships. Optional: Solve this problem with Microsoft Project. a. Assume that activities B and C are linked with a...

(a) How do you think most African American customers respond when treated unfairly in a store (for example, being passed over for service)? If an African American customer were to complain to store...

The contribution format income statement for Huerra Company for last year is given below: The company had average operating assets of $2,000,000 during the year. Required: 1. Compute the companys...

Which one statement below is correct? a. A process describes how to perform a task b. A procedure simply states what the facility will do c. A procedure informs the reader how to perform a task d. A...

An IRS agent has 19 tax returns on her desk, of which 14 were filed using the short form (1040A). She randomly chooses eight returns to audit. Determine the probability of the following: a. All eight...

My department at school is comprised of 10 faculty and 6 administrators. I need to organize a committee of six people from the department. If I randomly select these committee members, determine the...

Winner Automotive has a current inventory of 14 used cars and 8 used trucks. Management needs to select 10 used vehicles to participate in a special used vehicle sale at the local shopping mall. If...

MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER On the Navajo Reservation, a random sample of 218 permanent dwellings in the Fort Defiance region showed that 64 were traditional Navajo hogans. In the...

You are evaluating various investment opportunities currently available and you have calculated expected returns and standard deviations for five different well-diversified portfolios of risky...

What is the purpose of the EXTRACT function in SQL ? 1 point Calculate using data extracted from other tables Calculate the mathematical extract operation Return a specific key - value pair from a...