Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. correlation and regression analysis question 2ﾃゑｿｽ

Correlation and Regression Analysis Question 2ﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつ The marks in a Physics exam (P) and a Chemistry exam (C)...

70.2K

Verified Solution

Question

Statistics

Correlation and Regression Analysis

Question2ﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつﾃつ

The marks in a Physics exam (P) and a Chemistry exam (C) wererecorded for 15 students:

Physics

25

46

63

45

78

18

84

48

73

50

61

89

38

36

30

Chemistry

31

44

58

49

66

12

61

56

70

57

62

56

29

40

38

  1. Draw a scatter diagram and comment.
  2. Find the regression line where the Chemistry mark is theexplanatory variable and the Physics mark is the responsevariable.
  3. Calculate the correlation between P and C. Test the hypothesis,at 5%, that it is positive.
  4. Predict the Physics mark of three students, one obtaining 20 inChemistry, one 50 in Chemistry and the third 80 in Chemistry. Whichof the three predictions do you trust more?
  5. Perform a hypothesis test that the slope of the regression lineis positive.

Answer & Explanation Solved by verified expert
4.1 Ratings (480 Votes)
abPhysics 35621 11487 Chemistryccorrelation between P and C r 08465 Positive and Strongcorrelation between P and CHypothesisH0 0Ha 0Testt    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Technology has changed the way scientists conduct their research. Select the ways the film supported...

Biology
Q

CASE: Parts Emporium Parts Emporium, Inc., is a wholesale distributor of automobile parts formed by two...

Operations Management
Q

draw a cause and effect diagram for the possible causes of the $25 tip service upset

Operations Management
Q

Lesson 8 Explain why the word "average" should not be used to describe measures of center. Explain the...

Advance Math
Q

3 Jacob North wants to buy a four year old Palomino sedan His friend has...

Basic Math
Q

Find the component form of the vector v 300 O 88 152 42 56 56...

Calculus
Q

Paulsen Company sells only one product. The regular selling price is $50. Variable costs are...

Accounting
Q

9. Management is the art and science of decision making and leadership A. O Harold...

Accounting
Q

The following year-end information is taken from the December 31 adjusted trial balance and other...

Accounting
Q

An increase in the gross profit margin combined with a decrease in the profit margin...

Accounting
Q

Peridis Inc. has entered into a contract with an asset-based finance company to lease some...

Accounting
Q

In calculating insurance premiums, the actuarially fair insurance premium is the premium that results in...

Finance