How to decide sales are more consistent-significance level

Assignment Help Basic Statistics
Reference no: EM13117101

There are two Chevrolet dealers in Jamestown, New York. The mean monthly sales at Sharkey Chevy and Dave White Chevrolet are about the same. However, Tom Sharkey, the owner of Sharkey Chevy, believes his sales are more consistent. Below is the number of new cars sold at Sharkey in the last seven months and for the last eight months at Dave White. Do you agree with Mr. Sharkey? Use the .01 significance level."

Sharkey 98 78 54 57 68 64 70
Dave White 75 81 81 30 82 46 58 101

Reference no: EM13117101

Questions Cloud

Find the ultimate party most likely to suffer the loss : Rodeo Ranch's agent Silm is authorized to draw checks on Rodeo Ranch's account in Town Bank. Upper Range Corporation is a Rodeo Ranch supplier. Find the ultimate party most likely to suffer the loss
Calculate standard deviation number of days due to illness : A sample of the personal files of eight male employees revealed that during a six month period they lost the following number of days due to illness 2, 0, 6, 3, 10, 4, 1, 2. Calculate the standard deviation. show your work.
Evaluate the magnitude of the acceleration of each mass : Evaluate the magnitude of the acceleration of each mass. What percentage of error in would be made if the moment of inertia of the pulley were ignored? Ignore friction in the pulley bearings.
Explain by how much horizontal force f must sprinter of mass : Explain by how much horizontal force F must a sprinter of mass 62.0 kg exert on the starting blocks to produce this acceleration?
How to decide sales are more consistent-significance level : Below is the number of new cars sold at Sharkey in the last seven months and for the last eight months at Dave White. Do you agree with Mr. Sharkey? Use the .01 significance level."
Explain by how much did the ball clear the net : The ball leaves his racket with a speed of 16.0 m/s at an angle 5.5 degrees above the horizontal. The horizontal distance to the net is 7.0 m and the net is 1.0 m high. Explain by how much did the ball clear the net?
Why does synechocystis not require electroporation : for transformation of Synechocystis, why do you first plate your transformant mixture on a filter on a BG - 11 plate with glucose, and the next day the TA transfers the filter with cells to a plate that contains kanamycin (rather than plating dire..
Illustrate what will be it speed when it strikes ground : A projectile is fired at an upward angle of 45 degrees from the top of a 265 m cliff with a speed of 350 m/s. Illustrate what will be it's speed when it strikes the ground below?
Define some content theories and process theories : Define some differences between content theories and process theories, include how these relate to validity and reliability.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Distribution of sample proportions

Suppose that a large corporation surveys all of their employees, and finds that 24% of them carry secondary health insurance. A representative from GoldStar Care visits 100 employees

  Determining z test for proportion

A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 60%.

  Probability related to high school graduating class

In a high school graduating class of 100 students, 42 studied math, 68 studied psychology, 54 studied history, 22 studied both math and psychology, 7 studied history and neither math nor pyschology, 10 studied all three and 8 did not take any of t..

  Hypothesis test about standard deviation irregularity

The mean lifetime of electric light bulbs produced by a company has in the past been 1120 hours with a standard deviation of 125 hours. A sample of 20 bulbs revealed a standard deviation in the lifetimes of 150 hours.

  Forcast the proportion of fish in a perticular lake

A researcher wishes to forcast the proportion of fish in a perticular lake which is inedible due to pollution of the lake.

  Testing the heights of baseball bounces

In previous tests, baseballs were dropped 24ft onto a concrete surface, and they bounced an average of 92.84% in. In a test of a sample of 40 new balls, the bounce had a mean of 92.67 in.

  Probability-chebyshev theorem

In a certain distribution of numbers the mean is 60 with a standard deviation of 8. Use Chebyshevs theorum to tell the probability that a number lies in each interval.

  Determining normal distribution-binomial distribution

The records show that 8% of the items produced by a machine do not meet the specifications. Use the normal approximation to the binomial distribution to answer the following questions.

  Confidence interval by using normal distribution

Let μ be the hourly wage (excluding tips) for workers who provide hotel room service in a large city. A random sample of a number (more than 30) of such workers yielded a 95% confidence interval for μ of $8.46 to $9.86 using the normal distributio..

  Brakes for a model of automobile

Brakes for a model of automobile fail with a Poisson distribution at an annual rate of 4.4/yr. What is the probability that

  Important information about risk reduction

A person reads a research study of the effectiveness of perineal exercises in preventing urinary incontinence and notes that the number of subjects in each group is 120.

  Information about statistical significance

You are a researcher who is interested in the effect of child care on the attachment which develops between an infant and a caregiver.

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