User Account

All Pages

Explain why the assumption of normality

Assignment Help Basic Statistics
Reference no: EM13847456

Q.4 The Bureau of Labor Statistics provides compensation information on and services for various positions. As of May 2008, the national average salary for an RN (registered nurse) was $65,130. Suppose the standard deviation is $9385. For a random sample of 100 such nurses find the following:

(a) The probability that the mean of the sample is less than $62,500.

(b) The probability that the sample mean is between $64,000 and $67,500

(c) The probability that the sample mean is greater than $66,000

(d) Explain why the assumption of normality about the distribution of wages was not involved in the solutions parts to a, b, and c.  

Reference no: EM13847456

Questions Cloud

Reading publically available financial statements : Why is working capital important to management? How do financial analysts use the quick ratio? Would your computations be different if the company reported $250,000 worth of contingent liabilities in the notes to the statements?
A national survey found that of australians consume milk : A national survey found that 17% Of Australians consume milk with their breakfast. However, in Victoria, a large milk producer believes that more than 17% of Victorians consume milk with their breakfast. To test this idea, a marketing organisation ra..
What can you conclude from your calculations : Using these data, construct a 95% confidence interval to estimate the average number of days a car is rented out. Assume that the number of days a car is rented is normally distributed in the population. What can you conclude from your calculations?
What is the probability that a random sample of 49 different : What is the probability that a random sample of 49 different one-hour shopping periods will yield a sample mean between 441 and 446 shoppers?
Explain why the assumption of normality : he Bureau of Labor Statistics provides compensation information on and services for various positions. As of May 2008, the national average salary for an RN (registered nurse) was $65,130. Suppose the standard deviation is $9385. For a random sample ..
State the null and alternative hypotheses, in words : State the null and alternative hypotheses, in words and in symbols., The five stocks that Sara recommended to Daniela had returns of +10%, -15%, +5%, +30%, and -5% over the one-year trial period.  (The overall stock market, as measured by the S&P 500..
When was the employee hired : What is the expected postretirement benefit obligation at the end of 2013? When was the employee hired? What is the expected postretirement benefit obligation at the beginning of 2013?
What is the apbo at the beginning of the year : What is the APBO at the beginning of 2013? What is the interest cost for 2013? What is service cost for 2013? Prepare the journal entry to record the postretirement benefit expense for 2013.
Identify key ideas and concept within a real life scenario : Logical flow leading the reader from start to finish on a clear path of addressing the assessment requirements; clear identification and description of current state; clearly leading into the solutions; application of correct report format.

Reviews

Write a Review

Basic Statistics Questions & Answers

  If mendels theory is correct find the mean and standard

question when mendel conducted his famous genetics experiments with peas one sample of offspring consisted of 580 peas

  Determining poisson random variable

A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable

  Forecast the average annual food price index using

the following table shows six years of average annual cost-of-living index datayearannual cost of living

  Probability-gas station pump

Gas Station pump signs, at one chain, encourage customers to have their oil checked, claiming that one out of every four cars should have its oil topped.

  Conclude that mean of four sample mean will be equal

x you then repeat this procedure three more times. you learned in class that u_x = u can you conclude that the mean of the four sample mean will be equal to the population mean, 65? why or why not?

  Probability-perfectly competitive

Determine the probability that no more than 10 firms are perfectly competitive?

  Find ten pairs of points yielded correlation coefficient

Ten pairs of points yielded a correlation coefficient of 0.790. If α = 0.05, which of the following statements is correct if H0 = ρ0?

  Mean for binomial probability distribution

Imagine you are the CEO of a local bank whose credit card holders engage in 1 billion credit card transactions per year; that the likelihood of a fraudulent transaction is 2%

  Median number of hours of television watched per week by shu

Determine the 90% confidence interval estimate for the median number of hours of television watched per week by shut-ins.

  Exponential probability density function

Exponential probability density function

  A researcher is investigating the effectiveness of a new

a researcher is investigating the effectiveness of a new medication for lowering blood pressure for individuals with

  Hypothesis testing-use of cellular phones

The use of cellular phones in automobiles has increased dramatically in the last few years. Of concern to traffic experts, as well as manufacturers of cellular phones

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd