Problem of z-score

Assignment Help Basic Statistics
Reference no: EM13106794

A five-year old study claims that selling prices of new homes / condominiums in the New York area have a normal distribution with mean = $180,000 and standard deviation = $40,000.

a. Assuming that the results of the study are still valid, what is the probability that a randomly selected new house in the New York area will cost more than $210,000?

b. A new couple decides to settle in this area. They are willing to pay between $160,000 and $190,000 for a new home. What is the probability that they will find a new house to purchase in the New York area that satisfies their price range?

c. What is price below which the 10% of the lowest priced new homes in the New York area are sold?

Reference no: EM13106794

Questions Cloud

Discuss applicable federal regulations relating to kickbacks : Identify and discuss applicable federal regulations relating to kickbacks. How should the 2 million be allocated to each loan/investment alternatives to maximize total annual return?
How to enhance act test scores for high school students : Create the APA formatted paper including at minimum, a title page, abstract page, content, and referene page. The title is The importance of enhancing ACT test scores for High School students?
Case study - matthew yachts located in montauk : Matthew Yachts, located in Montauk, Long Island, manufactured sailing yachts of all descriptions. The company had begun by building custom-designed yachts for a largely New York-based clientele.
Determining one sample z test for proportion : The election is one week away. You think you have the election sewn up, but the seem appears to be unraveling. You run a poll, draw a random sample of 500 adults.
Problem of z-score : A five-year old study claims that selling prices of new homes / condominiums in the New York area have a normal distribution with mean = $180,000 and standard deviation = $40,000.
Describe the purpose of drug courts : What is the purpose of drug courts? What do you think will be their future? Do you think drug courts are a good idea? Why or why not?
Compare occurrence of offense in metropolitan areas : Use the FBI Uniform Crime Report data and choose one offense, like burglary, in two metropolitan areas. Select metropolitan areas with different data.
How investigators collecting evidence if crime was thought : Discuss the legality of the hacker's actions as described in the "Hacking into Harvard" article. Explain how investigators may go about collecting evidence if a crime was thought to be committed.
How much time elapses between the impacts : A plucked guitar string produces a sound wave of frequency 440 Hz. (a) What is the wavelength of the sound wave (assume the speed of sound in air is 340 m/s)? (b) How much time elapses between the impacts of two adjacent compression on your eardru..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Sample size and acceptance level in design of sampling plans

What sample size and acceptable level would result in a probability of .05 that a good batch will be rejected and a probability of .10 that a bad batch will be accepted?

  Risk neutral probability and value of call option

A stock price is currently $100. Over each of the next two three-month periods it is expected to increase by 10% or fall by 10%. Consider a six-month European call option with a strike price of $105.

  Following a poisson distribution with mean

The university policy department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with mean of 6.5 tickets per day. Interpret ..

  Binomial probability formula

Create a scenario where the binomial probability formula could be used to determine the probability of some number of successes, x, in some given number of trials,n.

  Nba game for normally distributed

Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );

  Distribution of the lengths of the songs

Find the probability that a random selection of 9 songs will have mean length of 186.30 seconds or less. Assume distribution of the lengths of the songs is normal.

  Performance of the comapany stock investments

In studying the performance of the comapany's stock investments over the past year, the research manager of a mutual fund company finds that only 43% of the stocks returned more than the rate that had been expected at the beginning of the year.

  Confidence interval to estimate average age of all golfers

The owner of a local golf course wanted to determine the average age of the golfers that played on the course. In a random sample of 30 golfers that visited his course, the sample mean was 48.34 and the standard deviation was 9.327. Calculate a 90..

  Assuming scores which are normally distributed

If the board wants to set the passing score so that only the best 80% of all applicants pass, what is the passing score? Assume that the scores are normally distributed. Round to the nearest whole number.

  Regression coefficients-statistically significant

because only two of the seven regression coefficients are statistically significant. Yet in some initial trials the expanded model is giving more precise sales predictions than the smaller model. The reasons for this anomaly are now being investig..

  Aptitude test for managers-selecting management trainees

A company adminsters an "aptitude test for managers" to aid in selecting new management trainees. Prior experience suggests that 60 percent of all applicants for management trainee positions would be successful if they were hired.

  Marketing analyst can use inependent samples

Explain how the marketing analyst can use independent samples to collect the data.

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!

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