Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Probability using Normal distribution: Z score.

Shaver Manufacturing, Inc., offers dental insurance to its employees. A recent study by human resource director shows the annual cost per employee per year followed the normal probability distribution, with a mean of $1,280 and a standard deviation of $420 per year.

a. What fraction of employees cost more than $1,500 per year for dental expenses?

b. What fraction of employees cost between $1,500 and $2,000 per year?

c. estimation the percent that did not have any dental expense.

d. What was the cost for 10 percent of employees who incurred the highest dental expense?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920589

Have any Question? 


Related Questions in Statistics and Probability

A business student is interested in estimating the 99

A business student is interested in estimating the 99% confidence interval for the proportion of students who bring laptops to campus. He wishes a precise estimate and is willing to draw a large sample that will keep the ...

1 travelers are asked how many hours they are willing to

1. Travelers are asked how many hours they are willing to drive while on vacation in one day. A total of 86 travelers reported a mean of 11.55 hours with a standard deviation of 1.2 hours. Find the 99% confidence interva ...

What are the key components of consideration that went into

What are the key components of consideration that went into forming the Texas Constitution?

Mouse parts produces mouse ears white gloves and other

Mouse Parts produces mouse ears, white gloves and other parts that are incorporated into the production of Mickey Mouse souvenirs. One of the components used in production has an annual demand of 250 units, and this is c ...

1 discuss how the interrupted time series design with a

1. Discuss how the interrupted time series design with a reversal and the interrupted time series design with multiple replications improve on the simple interrupted time series design. 2. Distinguish between a longitudi ...

1 all successful empires share certain characteristics what

1. All successful empires share certain characteristics. What are these characteristics and how do they relate to the rise of the Muslim empires? Put Islam in its historical context and explain how the Umayyad and Abbasi ...

1 why do researchers calculate the coefficient of

1. Why do researchers calculate the coefficient of determination? 2. What does a coefficient of determination of .40 indicate?

It is estimated 30 of all adults in united states invest in

It is estimated 30% of all adults in United States invest in stocks and that 88% of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that 25% of U.S. adults h ...

During a certain week the mean price of gas was 2709 per

During a certain week the mean price of gas was $2.709 per gallon. A random sample of 35 gas stations is drawn from this population. What is the probability that the mean price for the sample was $2.697 and $2.716 that w ...

Consider rolling a fair 6-faced die twice let a be the

Consider rolling a fair 6-faced die twice. Let A be the event that the sum of the two rolls is atmost 6, and B be the event that the first one is an even number. (a) What is the probability that the sum of the two rolls ...

  • 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