User Account

All Pages

Compute a pearsons correlation coefficient

Assignment Help Basic Statistics
Reference no: EM13236823

A statistics instructor is interested in the correlation (Pearson r) between how many hours a student sleeps the night before the final examination and the students score on the final examination. Use the following information to answer the questions below.

Student

Sleep (hrs)

Final

Barbara

8

96

Michael

6.3

75

Tina

10.5

88

Sharene

6.8

65

Destiny

8.5

82

Courtney

7.5

70

William

9

100

Kobe

7.5

84

Missy

6.5

73

Jose

8.2

96

Jeffrey

8.7

87

(a) Compute a Pearson's correlation coefficient for these data.

(b) Determine whether the correlation is significant.

(d) Calculate the regression slope and Y-intercept.

(e) Use the regression equation to predict the final examination grade for a student who sleeps 7.0 hours.

Reference no: EM13236823

Questions Cloud

What is the standard error of the mean : What is the percentile rank for someone who got 350 points and what percentage of students had between 275 and 375 points?
What is the future value in 40 years of the incom differnce : According to U.S. Census Bureau data (2004), average monthly income for a person with a degree in engineering was $5296 versus $3443 for a degree in liberal arts. What is the future value in 40 years of the incom differnce
Explain the product of triphenylbromomethane with water : What would be the product of triphenylbromomethane with water if it was reacted in acetone/methanol
How much should the company be willing to spend now : Atlas Long-Haul Transportation is considering installing Valutemp temperature loggers in all of its refrigerated trucks for monitoring temperatures during transit. If the systems will reduce insurance claims by $40,000
Compute a pearsons correlation coefficient : Compute a Pearson's correlation coefficient for these data and determine whether the correlation is significant.
Which country will have a bigger increase in productivity : Wolverine and Spartan both have populations of 40,000, the same level of human capital and the same natural resources. Both have the same production function with constant returns to scale and diminishing returns.
Determine what should the price of stock be : last week home depot was selling at $33.30. the earnings per share are projected to be $2.44 this year. if the required rate of return is 14% and dividend growth is constant at 5%, what should the price of stock be
Define what is the enthalpy change for the reaction : The standard enthalpy of formation of SiH4(g) is +34.3 kJ. The standard enthalpy of formation reaction is below. Si(s) + 2 H2(g) SiH4(g) What is the enthalpy change for the following reaction?
What do your results indicate : Use these data to test the null hypothesis of no difference in the use of sick days between younger and older adults - What do your results indicate

Reviews

Write a Review

Basic Statistics Questions & Answers

  Estimating the geometric mean rate of increase

Confirm that these statements are accurate by finding the geometric mean rate of increase.

  Z-score-probability and normal distribution

The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.

  Sum of the squares of the observations

Given that the mean of 100 observations is 42.5 and that their standard deviation is 6.313, find the sum of the squares of the observations.

  Initial perception of the information

What is your initial perception of this information? What are other ways, beyond looking at the p-value alone, you could use to try to interpret what this outcome of r(2398) = -.21 tells us about the relationship between length of time taking drug..

  Substantive interpretation of unstandardized regression

Write a substantive interpretation of the following unstandardized regression equation based on a sample of 743 city residents, where Y is a 10-point scale measuring.

  X2 test statistic for testing the hypothesis

The amount ($1.00, $5.00, $10.00, $25.00, or $50.00) promised to each person was determined by randomization. For each person who was sent one of the surveys, The value of the X2 test statistic for testing the hypothesis

  Find difference between population variance-friedman test

Use Friedman test to find out whether there is evidence for significant difference between two population variance. Use .05 level of significance.

  Find probability that reservations are accepted for flights

Find the probability that when 236 reservations are accepted for Flight 179, there are more passengers showing up than there are seats available.

  Given number of degrees of freedom

Whenever the calculated value of t is equal to or greater than the tabled value of t, for a given number of degrees of freedom, then

  Probability that poll provide a sample distribution

Show the sampling distribution of p. (b) What is the probability that the poll will provide a sample distribution within 0.02 of the population proportion?

  What two alues, symmetrically distributed around

The New York Times reported (L.J> Flynn, Tax Surfing, The New York Times, March 25, 2002, p. C10) that the mean time to download the home page for the internal Revenue Service (IRS) , was 0.8 second. Suppose that the download time was normally di..

  True weight of satellite if it is at rest on planet surface

The period of the orbit is 2.3 hours. The radius of the planet is 4.34 × 106 m. What would be the true weight of the satellite if it were at rest on the planet's surface?

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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