Question: Help please In the EA] sampling problem, the population mean is $51,200 and the population standard deviation is $5,000. When the sample size is n

Help please

In the EA] sampling problem, the population mean is $51,200 and the population standard deviation is $5,000. When the sample size is n = 20, there is a 0.4085 probability of obtaining a sample mean within +/- $600 of the population mean. Use z-table. a. What is the probability that the sample mean is within $600 of the population mean if a sample of size 40 is used (to 4 decimals)? b. What is the probability that the sample mean is within $600 of the population mean if a sample of size 80 is used (to 4 decimals)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

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

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

2. (Submit a screenshot or PDF file of the table with results.) Investigation of Sampling Distribution of the Sample Mean For the uniform distribution on 0 to 50, the population mean is u = 25 and...

BADM 216.D1 Spring 2016 Final Exam Part 2 1. Exponential Distribution Suppose the time it takes for a mechanic to change the engine-oil and run the maintenance check of a car is exponentially...

BADM 216.D46 Fall 2016 1. Exponential Distribution Suppose the time it takes for a mechanic to change the engine-oil and run the maintenance check of a car is exponentially distributed with a mean of...

Tutor Marked Exercise 4 I. Theory Component Where relevant, keep all your middle work as well as your final answer to a minimum of four decimals, unless otherwise stated. 1. A population consists of...

Please anwser all parts In the EAI sampling problem, the population mean is $51,900 and the population standard deviation is $4,000. When the sample size is n = 30, there is a 0.5887 probability of...

Paragraph 1: o Brief summary of the U.S. News Data: The Average Online Bachelor's Student the article, including the source ? A direct link to this article is located here and I have attached the...

PLEASE MAKE SURE FORMATTING IS UNDERSTANDING AND READABLE! I have arranged the questions in the order they should be in, please only provide answer with section, question number and part (ex. 1a, 1b,...

In the EAI sampling problem, the population mean is $71,800 and the population standard deviation is $4,000. When the sample size is n = 30, there is a .5064 probability of obtaining a sample mean...

Sampling Distributions of Objectives In this activity, you will use the applet for investigating the sampling distribution of . You will use the applet to explore the shape of the sampling...

FROM MELL er going through this SSLM, you are expected to: find the mean and variance of the sampling distribution of the sample mean; (M1 1/ 12SP-IIId-5) and define the sampling distribution of the...

A thin plate of length l rests on a half cylinder of radius r. Derive an expression for the period of small oscillations of the plate. -1-

To facilitate cost tracing, a companys activities can be subdivided into four hierarchical categories. What are these four categories? Describe them and give at least two examples of each category.

a ) Lancaster Engineering Inc ( LEI ) has the following capital structure, which it considers to be optimal: Debt Preferred stock Common equity 2 0 % 2 0 % 6 0 % 1 0 0 % LEI's expected net income...

Consider data-mining software, which infers demographic information about the recipients of gifts. Is letting software infer demographics less of an invasion of privacy than questionnaires or other...

2. Provide new information and before 20 seconds have elapsed, add more infor-mation. The initial information will then be lost from memory for most people.

7. What is the extent (percentage) of errors detected in the information collected?

8. What are the costs of collecting the information?