Question

please answer ALL the question 1--The diastolic blood pressure (in mm Hg) of 84 patients with...

please answer ALL the question

1--The diastolic blood pressure (in mm Hg) of 84 patients with hypertension was:

88 98 78 84 77 81 90 82 75 72 92 85 92 77 84 77 82 100
92 88 74 80 95 90 87 80 83 77 86 80 88 90 79 82 93 100
80 85 96 85 90 84 82 95 88 97 80 88 94 92 88 96 90 103
88 86 84 90 98 88 86 95 97 88 75 82 90 98 84 97 84 102
88 78 80 82 86 90 85 95 88 86 90 101

Based on this information, construct a frequency distribution in order to answer the following questions.

a. Calculate the range. ........

b. Calculate the value of:
(1) First quartile score. (compute to whole number) ............
(2) Third quartile score. (compute to whole number) ........
(3) 90th percentile score. (compute to the first decimal) ........
(4) Percentile rank of a score of 81.............  th
(5) Percentile rank of a score of 87............. th

2-Calculate the value of:

First quartile score. (compute to the first decimal).........
Third quartile score. (compute to the first decimal).........
90th percentile score. (compute to the second decimal) .........
Percentile rank of a score of 81.......... th
Percentile rank of a score of 87......... th

3- Calculate the percentage of scores with stays greater than one week............ %

4- Calculate the percentage of scores with stays greater than two weeks.........  %

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Q1 )

The arranged data in ascending order is

72,74,75,75,77,77,77,77,78,78,79,80,80,80,80,80,80,81,82,82,82,82,82,82,83,84,84,84,84,84,84,85,85,85,85,86,86,86,86,86,87,88,88,88,88,88,88,88,88,88,88,88,90,90,90,90,90,90,90,90,90,92,92,92,92,93,94,95,95,95,95,96,96,97,97,97,98,98,98,100,100,101,102,103

a) Range = Max. - Min. = 103-72 = 31

b) First Quartile :

Q1 = (n+1)4 = 21.25th value

Q1 = 82

2) Third Quatile = 3(n+1)/4 = 63.75th value

Q3 = 92

3) 90th Percentile Score

P90 = 97+0.5(98-97) =97.5

4) Percentile rank of 81 is

= [(no. of values below 81)/n ]* 100

= (17/84)*100 = 20.24%

Answer: 20th

5) Percentile rank of 87 is

= [(no. of values below 87)/n ]* 100

=(40/84)*100 =47.62%

Answer: 48th

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Below represent scores on an exam, each entry one score for one student 40 99 59...
Below represent scores on an exam, each entry one score for one student 40 99 59 98 63 63 64 65 67 35 67 67 68 70 71 71 71 46 72 72 60 73 74 74 74 75 97 75 62 76 76 76 76 76 77 57 77 98 77 63 78 78 78 79 79 80 80 80 80 80 81 81 92 81 93 82 82 83 83 83 83 83 83 83 84 84 84...
Student Grades Student Test Grade 1 76 62 2 84 90 3 79 68 4 88...
Student Grades Student Test Grade 1 76 62 2 84 90 3 79 68 4 88 84 5 76 58 6 66 79 7 75 73 8 94 93 9 66 65 10 92 86 11 80 53 12 87 83 13 86 49 14 63 72 15 92 87 16 75 89 17 69 81 18 92 94 19 79 78 20 60 71 21 68 84 22 71 74 23 61 74 24 68 54 25 76 97...
Since we are attempting to examine the behavior of a class of students, the behavior of...
Since we are attempting to examine the behavior of a class of students, the behavior of an individual (as we calculated in objective 1) is really of little concern to us. Assuming that there are 30 students enrolled for a typical class, use the central limit theorem to calculate the following:    •   What would be the shape of the distribution of the average class grade of these 30 students?    •   What would be the average class average of...
1. The heart rates (beats per minute) of 20 people are as follows: 60 60 65...
1. The heart rates (beats per minute) of 20 people are as follows: 60 60 65 66 66 67 70 72 75 76 76 77 80 80 81 82 82 84 85 86. (a) Calculate the percentile rank for a person with a score of 80. (b) What does the percentile rank from (b) mean?
DHL recently selected a random sample of packages and weigh them. The weights for the samples...
DHL recently selected a random sample of packages and weigh them. The weights for the samples are given below. Use Excel to develop a frequency distribution using classes having equal widths. Use Excel to develop a relative frequency and a cumulative relative frequency distribution for the weights using the same classes created in part b. What percent of the sampled crates have weights greater than 96 pounds? DHL 89 91 86 93 94 91 95 83 84 92 80 88...
The following scores represent a sample of final examination grades for a statistics course 23 60...
The following scores represent a sample of final examination grades for a statistics course 23 60 98 32 57 74 52 70 82 69 74 63 80 62 80 77 81 95 41 65 92 85 85 61 36 79 55 76 52 10 64 75 78 25 80 48 83 64 88 82 81 67 41 71 67 54 34 72 74 43 60 78 84 89 76 84 17 90 15 79 a) Compute the 20th percentile of...
The following data are 40 measurements of head width (biparietal diameters, in mm) of fetuses in...
The following data are 40 measurements of head width (biparietal diameters, in mm) of fetuses in a sample of pregnant women infected with the Zika virus. The measurements were obtained using ultrasound at 33 to 36 weeks of gestational age at a clinic in Rio de Janeiro, Brazil. 61 69 70 80 80 80 81 82 82 82 82 83 84 84 84 84 85 85 85 85 85 85 85 85 86 86 86 86 87 87 87 88...
#10.     You are to determine if a new online teaching model is better than the existing...
#10.     You are to determine if a new online teaching model is better than the existing model, labelled old. You administer random tests to a pre-selected group of students first for material taught the old model and then under the new model. The data is given in the Excel file and is labelled problem # 10. Carry out an appropriate procedure in hypothesis testing to determine if the new model is more effective for learning. new old 78 4 86...
As part of its freshman orientation process, a college gives a math placement exam to incoming...
As part of its freshman orientation process, a college gives a math placement exam to incoming freshmen. The math department is interested in whether there is a statistically significant difference in the average exam score for students in different programs, at a level of α=0.01 . The exam scores for random samples of science, engineering, humanities, and business majors are shown in the following table. The math department has confirmed that the samples were randomly selected and independent, that the...
Mid Score Final Score 80 78 87 85 72 81 69 54 86 70 83 73...
Mid Score Final Score 80 78 87 85 72 81 69 54 86 70 83 73 78 89 75 84 74 86 75 79 84 75 73 63 74 72 73 69 80 86 75 78 72 75 77 68 76 77 66 78 74 77 71 73 85 79 74 74 76 79 76 73 84 72 77 81 78 86 86 76 81 83 78 83 85 86 73 71 83 83 83 79 72 68 83 90...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT