1. The following table gives the systolic blood pressure and age of patients. Systolic Blood Pressure Age 131 34 132 36 122 30 119 32 123 26 115 23 137 37 a) Determine...

80.2K

Verified Solution

Question

Statistics

1. The following table gives the systolic blood pressure and ageof patients.

Systolic Blood Pressure

Age

131

34

132

36

122

30

119

32

123

26

115

23

137

37

  1. a) Determine an r value for this data and classify the value asweak, moderate, or strong.

  2. b) Based on your calculated r value, what can you say about theslope of the regression line?

  3. c) Determine the model equation. This is also called theregression line or the least squares line.

  4. d) Refer to your notes around the assumptions of SLR. What isthe value of∑ ? ? What is the mean of the error terms? How are theerror terms distributed?

  5. e) Calculate the values of the residuals and sum them.

  6. f) Calculate the standard error, ?!, and ?\", and describe themeaning of ?\".

  7. g) Conduct a hypothesis test at the 5% level of significance totest if the slope is significantly different from 0. What is the p– value? Determine a 95% confidence for ?#.

  8. h) Suppose we want to predict the sbp for an average Age = 31.What would a 95% confidence interval be? (Notice that although theword predict is in the question, it specifically asks for theconfidence interval.)

  9. i) To predict the sbp, Y, for a person drawn at random who isaged 31, X, we would have 95% confidence in what interval? (Noticehere the word confidence is used but it never specifically asks fora “confidence interval”. It just says 95% confidence in whatinterval. Here we are asking for a prediction interval)

Answer & Explanation Solved by verified expert
3.8 Ratings (597 Votes)
    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