The following table displays the distribution of BMI of 30 high BP & 70 normal BP persons Normal BP ‘N’ High BP’H’ ‘H’ Total BMI < 25.0 ‘A’ 48 P( AN)=48/100 12P(AH)=12/100 60 P(A)=60/100 25.0 ≤ BMI ≤ 28.0 ‘B’ 16P(BN)=16/100 09P(BH)=9/100 25 P(B)=25/100 BMI > 28.0 ‘C’ 06P(CN)=6/100 09P(CH)=9/100 15 P(C )=15/100 Total 70 30 100 P(N)=70/100 P(H)=30/100 2.P ( BC U NC)
Added by Samah A.
Step 1
- The table categorizes 100 individuals based on their Body Mass Index (BMI) and whether they have normal blood pressure (BP) or high BP. - The categories for BMI are: - BMI < 25.0 (Category 'A') - 25.0 ≤ BMI ≤ 28.0 (Category 'B') - BMI > 28.0 (Category Show more…
Show all steps
Close
Your feedback will help us improve your experience
David Nguyen and 58 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Mark the following True or False: 1. (.5 PT) Theoretically, the mean, median, and the mode are all equal for a normal distribution. 2. (.5 PT) Any set of normally distributed data can be transformed to its standardized form. Choose the correct Answer: 1. (1 pt) In its standardized form, the normal distribution a) has a mean of 0 and a standard deviation of 1. b) has a mean of 1 and a variance of 0. c) has an area equal to 0.5. d) cannot be used to approximate discrete probability distributions. 2. (1pt) Which of the following about the normal distribution is not true? a) Theoretically, the mean, median, and mode are the same. b) About 2/3 of the observations fall within ± 1 standard deviation from the mean. c) It is a discrete probability distribution. d) Its parameters are the mean, μ, and standard deviation, σ. 3. (1 pt) For some value of Z, the probability that a standard normal variable is below Z is 0.2090. The value of Z is a) -0.81 b) -0.31 c) 0.31 d) 1.96
Adi S.
1.The weight and systolic blood pressure of 26 randomly selected males in the age group 25 to 30 are shown in the following table. Assume that weight and blood pressure are jointly normally distributed. Subject Weight Systolic BP Subject Weight Systolic BP 1 165 130 14 172 153 2 167 133 15 159 128 3 180 150 16 168 132 4 155 128 17 174 149 5 212 151 18 183 158 6 175 146 19 215 150 7 190 150 20 195 163 8 210 140 21 180 156 9 200 148 22 143 124 10 149 125 23 240 170 11 158 133 24 235 165 12 169 135 25 192 160 13 170 150 26 187 159 (a) Find a regression line relating systolic blood pressure to weight. (b) Test for significance of regression using α = 0.05 (c) Estimate the correlation coefficient.
Thuc N.
Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.01 significance level to test for a difference between the measurements from the two arms. Identify the test statistic and p-value. RIGHT ARM 146 136 114 130 136 LEFT ARM 165 177 187 146 135 A. T = -3.07, p-value = 0.037 B. T = -2.32, p-value = 0.081 C. T = -1.93, p-value = 0.127 D. T = -4.01, p-value = 0.016
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD