Find whether demand and unit price are related using t test

Assignment Help Basic Statistics
Reference no: EM13108185

Portion of the compute output for regression analysis relating Y (demand in units)and X(unit price)

ANNOVA
df SS
regression 1 5048.818
residual 46 ?
total ? 8181.479

coefficients st. error t-stat
Intercept 80.390 3.102 ?
X -2.137 .248 ?

A) Carry out t test and find out whether or not demand and unit price are related. Let a=.05
B) Carry out an F test and find out whether or not demand and unit price are related. Let a=.05
C) Calculate coefficient of determination and fully interpret its meaning.

 

Reference no: EM13108185

Questions Cloud

Wilcoxon-whitney test : What is a Wilcoxon-Whitney Test and when is it used? I am not sure when to use the Wilcoxon-Whitney Test and what it is testing.
Determining non parametric tests : Assume that each of the following studies cannot be analyzed using a parametric procedure. For each of the following studies (below), indicate the appropriate nonparametric procedure, and explain why you chose it.
Perform test of company-s claim at alpha : ample of fifteen 8 ounce Baby Ruth candy bars are weighed and it is found sample standard deviation is 0.6 ounces. Test company's claim at (alpha sign) is 0.05.
Mann-whitney u test : Dan Thompson, the president of CEO Airlines, recently noted an increase in the number of no-shows for flights out of Atlanta.
Find whether demand and unit price are related using t test : Carry out t test and find out whether or not demand and unit price are related. Let a=.05. Carry out an F test and find out whether or not demand and unit price are related.
Alternatives to a chi squared test. : Is there an alternative test to the chi squared test? What if my results give an expected frequency below 5, which stats book states that these should be treated with caution?
Comparing proposed policy to the current income tax system : Imagine that the U.S. Congress decides to completely overhaul the current federal income tax system because of its tremendous complexity and is considering a flat-rate income tax with no exemptions.
Chi-square test-phone service providers : In a survey about satisfaction with local phone service, those respondents who rated their current service as excellent and those who rated it Poor-Very Poor were asked to classify their current local service provider. The results are given in the..
What are the independent and dependent variables : 1- What are the independent and dependent variables were in the "Feeling Cold? Maybe You're Lonely" study by Zhong and Leonardelli 2-briefly describe the study in the context of the four validities and whether the study did a good job or not of me..

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Binomial-normal and uniform probabilities

In a recent survey 35 percent indicated chocolate was their favorite flavor of ice cream. Suppose we select a sample of 10 people and ask them to name their favorite flavor of ice cream.

  Computing critical value and test statistic

Data is given in the table below. Process data as illustrate in the paper on the Mann-Whitney U test. Critical Value:Test Statistic (Show procedure.)Z .

  Optimal solution for the problem graphically

If it costs 1 cent to make a liver-flavored biscuit and 2 cents to make a chicken-flavored one, what is the optimal product mix for a package of the biscuits in order to minimize the firm's cost?

  Problem related to maternity ward at big hospital

Suppose that about 48% of all infants are girls. The maternity ward at a large hospital handles 1000 deliveries per year. A smaller hospital in the same city records about 50 deliveries per year. At which hospital is it more likely that between 46..

  Determining confidence interval for mean difference

A fabric manufacturer wants to know how large an advantage in strength fabrics treated by the Permafresh method have over the fabrics treated by the Hylite process. Give a 90% confidence interval for the difference in mean breaking strengths.

  Appropriate inference method

If Weight 1 is the weight (in pounds) of a random sample of five men who were accepted as models, and Weight 2 is the weight (in pounds) of a random sample of five men who were rejected as models, which of the following is the appropriate inferenc..

  Predicting probability values based on discrete distribution

If a proposal evaluator randomly selected two proposals, what is the probability that both of them met the specified?

  Problem related to distribution of weekly water usage

Suppose that the distribution of weekly water usage for single-family homes in a particular city is mound shaped and approximately symmetric. The mean is 1400 gallons, and the standard deviation is 300 gallons.

  Determining value of the test statistic

Determine the calculated value of the test statistic? What distribution does test statistic have when null hypothesis is true?

  Most practical approach to problems

In your organization's management development program, there was a heated discussion between people who claimed that theory is impractical and not effective

  Study of sampling methods-central limit theorem

The area of study is Sampling Methods and the Central Limit Theorem. Consider the digits in the phone numbers on a randomly selected page of your local phone book a population.

  Critique the hr manager planned approach

Critique the HR manager's planned approach and give him advice on how to proceed. You can assume that a reasonable estimate for the proportion of new hires that are happy with the company is .8.

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