Regression analysis-correlation hypothesis test

Assignment Help Basic Statistics
Reference no: EM1396192

Construct a Scatterplot of the raw data. Then, run the Correlation/Regression program.

Costs of Television: Listed below are prices (in dollars) and quality rating scores of rear-projection televisions. All of the televisions have screen sizes of 55 or 56 inches. Is there sufficient evidence to conclude that there is a linear correlation between the price and the quality rating score of rear-projection televisions? Does it appear that as the price increases, the quality score also increases? Do the results suggest that as you pay more, you get better quality?

Price 2300 1800 2500 2700 2000 1700 1500 2700

Quality 74 73 70 66 63 62 52 68

Identify the correlation coefficient: r = __________

Identify the CV at alpha = 0.05: __________

Is there significant linear correlation?: ________

How do you know? ____________________________

Reference no: EM1396192

Questions Cloud

Wilson sued needle nose bond for false imprisonment : the wrecker lifted the car off the road also progressed seventy-five to one hundred feet until Wilson managed to stall the wrecker. Wilson sued Needle nose Bond for false imprisonment. Decision?
Discussion of a regression analysis : What are the requirements that must be met for a regression analysis? What happens if these requirements are violated? Why is the analysis of residuals important?
Elucidate fully using the complete rule : the neighbour failed to do so; may she recover damages from her neighbour? Explain why or explain why not? Elucidate fully using the complete rule.
Describe the role of these fluids : Semen is a mixture of sperm and fluids from the accessory organs of the male reproductive tract. Describe the role of these fluids and what organ they are secreted from.
Regression analysis-correlation hypothesis test : Costs of Television: Listed below are prices (in dollars) and quality rating scores of rear-projection televisions. All of the televisions have screen sizes of 55 or 56 inches.
How would you increase a specific interaction : Q1. Can you suggest principal methods to prevent protein adsorption to a biomaterial surface? Q2. An adsorbed protein layer plays a critical role in cell-substrate interaction by forming intermediate layer.
Construct a diagram using rationale to map the arguments : An article from the press that cover any of the given topics, for example there have been many articles in the media recently about government surveillance.
Elucidate why other technique would not work in workplace : Compare also contrast project management also scenario planning techniques with particular emphasis on the implications of the techniques for the manager also the organization. Elucidate why the other technique would not work in your workplace.
Determining that oil cleaning spills are effective machines : A research company has designed three different systems to clean up oil spills. The following table contains the results, measured by how much surface area (in square meters) is cleared in 1 hour. The data were found by testing each method in seve..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Study of cardiovascular risk factors

A recent study of cardiovascular risk factors reports that 30% of adults meet the criteria of hypertension. if 15 adults are assessed, what is the probabiliy that?

  Changing the level of confidence?

How could the engineer increase the accuracy of the interval without changing the level of confidence?

  Value of proportion and construct a confidence interval

Find the value of Proportion and construct a 90% confidence interval for proportion.

  Evidence of a difference in variability in the shipping time

At the .05 level of significance, is there evidence of a difference in variability in the shipping time between the two outlets? What decision should the carpet manufacturer make? Please provide step by step solution.

  Calculation-high-speed internet access

A researcher wishes to estimate with 99% confidence, the proportion of adults who have high-speed Internet access. Her estimate must be accurate within 2% of the true proportion.

  Percent of internet users who download music

Using a significance test, evaluate whether or not there has been a change in the percent of Internet users who download music. Provide all details for the test. (Round your value for z to two decimal places. Round your P-value to four decimal pla..

  Correlation-simple linear regression analysis

Take your data and arrange it in the order you collected it. Count the total number of observations you have, and label this number N. Then create another set of data starting from one and increasing by one until you reach N.

  Making frequency distribution

The caffeine content of 20 brands of regular coffee is shown below. 80 82 89 85 87 30 33 44 40 46 50 55 60 62 71 90 92 75 63 65. Thus, this job helps to construct a Frequency Distribution with a class interval of 10, starting with 30.

  Probability on the discrete distribution

Based on this information, by what factor does the risk of having an accident increase due to driving while intoxicated?

  Determining probability that no female are hired

Determine the probability that no female are hired. Determine the mean and standard deviation of X.

  Calculated z test statistic and null hypothesis rejection

The calculated Z test statistic is a positive value that leads to a p-value of .045 for the test. If the significance level (α) is .01, the null hypothesis would be rejected.

  What is the test statistic and p-value of test

Assuming that the population standard deviations are the same, perform a two independent samples t-test on the hypotheses Null Hypothesis: μ1 = μ2, Alternative Hypothesis: μ1 ≠ μ2. What is the test statistic and p-value of this test?

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