Correlation between x and y in the population

Assignment Help Applied Statistics
Reference no: EM13882940

 1 ) Describe what is meant by a negative relationship and a positive relationship between two variables.

2 ) A sample of n = 25 pairs of scores (X and Y values) produces a correlation of r = -0.40. Are these sample data sufficient to conclude that there is a significant non-zero correlation between X and Y in the population? Use a two-tailed test at the .05 level of significance.

3. For the data below:

a. Compute the Pearson correlation.

b. Find the regression equation for predicting Y from X.

 

X       Y

5      10

3       6

6        7

4       3

2       4

Reference no: EM13882940

Questions Cloud

Case- continental computer corporation : Evaluate the case and propose a solution. Prioritise the steps to be taken in your approach, be systematic and motivate your assertions.
Davenport company sold merchandise to a customer : 1.On December 1, 2013, Davenport Company sold merchandise to a customer for $20,000. In payment for the merchandise,
Compute the market debt to equity ratio : Compute the market Debt to Equity ratio
Harwell uses the gross method of accounting for cash : 1.Harwell Company manufactures automobile tires. On July 15, 2013, the company sold 1,000 tires to the Nixon Car Company for $50 each
Correlation between x and y in the population : 2 ) A sample of n = 25 pairs of scores (X and Y values) produces a correlation of r = -0.40. Are these sample data sufficient to conclude that there is a significant non-zero correlation between X and Y in the population? Use a two-tailed test at the..
A binomial population gives a value of p^=0.46 : Suppose a random sample of 100 observations from a binomial population gives a value of p^=0.46 and you wish to test the null hypothesis that the population parameter p is equal to 0.50 against the alternative hypothess that p is greater than 0.50a) ..
Suppose a,b and c are three events of a sample space : Suppose A,B and C are three events of a sample space, S, all of which have no outcomes in common.  It is possible that P(A) = 0.4, P(B) = 0.5, and P(C) =0.6. explain your answer
Harwell uses the net method of accounting : The terms of the sale were 2/10, n/30. Harwell uses the net method of accounting for cash discounts.
What gives rise to the currency exposure at aifs? : What gives rise to the currency exposure at AIFS?

Reviews

Write a Review

 

Applied Statistics Questions & Answers

  Let the random variable x have the p.m.f.

Question : Question : Let the random variable X have the p.m.f. f(x) = ((lxl+1)^2) / 9, x=-1,0,1 Compute E(x), E(x^2), and E(3x^2-2x+4).f.

  What is the lottery expected profit per ticket

What is the lottery's expected profit per ticket?

  Abc corporation has used regression analysis to perform

Question 1: ABC Corporation has used regression analysis to perform price elasticity analysis. In doing so management regressed the quantity demanded (y variable) against price (x variable) with the following results:Multiple R .86798 Adjusted R squa..

  What are the optimal values of the two decision variables

a.) What is the optimal value of the objective function? More than one optimal solution can lead to the case of alternative optimal solutions, More than one solution provides the optimal value for the objective function.b.) What are the optimal value..

  What is the 5 stage lp formulation of this model

A computer services company sells computer services to industrial users. The company's analytic officer has predicted the need for growth to meet competitive pressures.  To implement this strategy, upper management has determined that the company wou..

  Develop an ordered array and plot a percentage histogram

Develop an ordered array and plot a percentage histogram, what conclusions can you reach about the differences in the state cigarette tax between the states?

  Jessica will have won more games than susan

When Susan and Jessica play a card game, susan wins 60% of the time. if they play 9 games, what is the probability that jessica will have won more games than susan?

  What is the mean and standard deviation

What is the mean and standard deviation (SD) for preoperative T score for CVLT Acquisition - distribution of scores for the postoperative CVLT Retrieval T scores is normal, the middle 68% of the patients had T scores between what two values?

  Find the probability that a sample mean is larger

Which of the following formulas would you use to find the probability that a sample mean is larger than some given value? z = (x - µ) ÷ σ µ = ∑x ÷ N

  Two bowls full of candies

Suppose we have two bowls full of candies.  Each bowl contains four different flavours of candy - grape (which are purple), lemon (which are yellow), cherry (which are red) and raspberry (which are also red).  (a)  What is the probability that the fi..

  Perform a hypothesis test to address the questions

Perform a hypothesis test to address the questions

  1 ifnbspphi-z0 nbspalpha2 z0 assume alpha lt012 a company

1. ifnbspphi-z0 nbspalpha2 z0 ? assume alpha lt0.1.2. a company produces cooling tubes. the pressure of the tube is an

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