Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

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

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

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

c. Estimate percent that didn't have any dental expense.

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

 

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920471

Have any Question? 


Related Questions in Statistics and Probability

Holiday fruit company buys oranges and processes them into

Holiday Fruit Company buys oranges and processes them into gift fruit baskets and fresh juice.  The company grades the fruit it buys on a scale from 1 (lowest quality) to 5 (highest quality).  The following summarizes Ho ...

A professor has learned that four students in her class of

A professor has learned that four students in her class of 18 will cheat on the exam. She decides to focus her attention on seven randomly chosen students during the exam. a. What is the probability that she finds at lea ...

A machine used to fill gallon-sized paint cans is regulated

A machine used to fill gallon-sized paint cans is regulated so that the amount of paint dispensed has a mean of 138 ounces and a standard deviation of 0.40 ounce. You randomly select 45 cans and carefully measure the con ...

1 what does the error of estimation tell us about the

1. What does the error of estimation tell us about the results of a study conducted using probability sampling? 2. What happens to the error of estimation as one's sample size increases?

1 true or false every experiment has as many conditions as

1. True or false: Every experiment has as many conditions as there are levels of the independent variable. 2. Give your own example of an environmental, instructional, and invasive experimental manipulation.

1 what can researchers do to minimize error variance2

1. What can researchers do to minimize error variance? 2. Discuss the trade-off between internal and external validity. Which is more important? Explain.

A person goes to his office everyday he has a single

A person goes to his office everyday. He has a single umbrella. When he is home and the umbrella is home, he can choose to bring it. He will certainly do so if it is raining, but must decide what to do if is not raining, ...

Choose one historical event and discuss the effect that it

Choose one historical event and discuss the effect that it has has on you. Provide a rationale for your response.

Suppose we randomly sample 400 nucleotides from the human

Suppose we randomly sample 400 nucleotides from the human genome. (Consider only a single strand.) Does the occurrence of adenine, thiamine, cytosine and guanine (A, C, T and G) in this sample suggest that nucleotides in ...

There are 1000 students in a high school among the 1000

There are 1000 students in a high school. Among the 1000 students, 150 students take AP Statistics, and 300 students take AP French. 100 students take both AP courses. Let S be the event that a randomly selected student ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen