22. Systolic Blood Pressure Assume that the mean systolicblood pressure of normal adults is 120 millimeters ofmercury (mm Hg) and the standard deviation is 5.6.Assume the variable is normally distributed.If an individual is selected, find the probability thatthe individual's pressure will be between 120 and121.8 mm Hg.а.b. If a sample of 30 adults is randomly selected, findthe probability that the sample mean will bebetween 120 and 121.8 mm Hg.Why is the answer to part a so much smaller thanthe answer to part b?с.

a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Answered: Systolic Blood Pressure Assume that the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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answer letter a,b, and c
Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0.21. Sketch the region. Choose the correct graph below. A. В. С. O D. 0.21 0.21 -0.21 0.21 -0.21 The probability is. (Round to four decimal places as needed.)
The average number of words in a romance novel is 64,289 and the standard deviation is 17,272. Assume the distribution is normal. Let X be the number of words in a randomly selected romance novel. Round all answers to 4 decimal places where possible.b. Find the proportion of all novels that are between 62,562 and 79,834 words. ________________c. The 85th percentile for novels is words. (Round to the nearest word) ________________d. The middle 70% of romance novels have from _______ words to _______ words. (Round to the nearest word)
The scores of the Betropolis University Music Appreciation Exam are Normally Distributed with a mean of 50 and a standard deviation of 10; that is N(50, 10). A. Boris scored 40.6 and Bela scored 56.8. Find the percent of students who scored greater than Boris and less than Bela. Your answer should be correct to 4 places after the decimal point. ___________ B. 51% of the students score greater than Bernie. Find Bernie’s score. Your answer should be correct to 3 places after the decimal point. Bernie’s score was ___________
A normal distribution has a Mean of 25 and a S.D. of 10. Find the probability that the deviation from the Mean of an item taken at random will have a negative value.
For a population that has a standard deviation of 22, figure the standard deviation of the distribution of means for samples of size (a)2, (b)4, (c)5 and (d)10.
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 68 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 65 miles per hour and 71 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately nothing% of vehicles travel between 65 miles per hour and 71 miles per hour.
Let the physics exam scores X follow a normal distribution with mean 80 and standard deviation 10. What score the student should get to be from the better of 10%of students
Build the frequency distribution table with 5 classes, and for the following observations for some students marks? then Answer the following Questions from the constructed table... A) Which class has maximum frequency?... B) Which class has minimum frequency? .. C) Classify the ?type of table 88 39 38 45 50 76 78 33 28 36 88 46 67 72 58 30 85 56 51 42 38 68 67 84 41 52 76 69 41 685 ト
o/vn measures the standard deviation of the sampling distribution of mean. Another name for it is Select one: O a. standard error of sample mean. O b. standard deviation of population mean. Oc standard error of population proportion. standard effor of sample proportion. O d.
The volume of blood in an adult human body follows a normal distribution with a mean of 5.2 liters and a standard deviation of 0.3 liters. Use this information to answer questions 11- 13 and remember required steps. 11. If a random sample of 16 adults is selected, calculate the probability that their mean blood volume is lower than 5.4 liters. 12. If a single adult is selected, calculate the probability the blood volume is higher than 5.9 liters. 13. What is the first quartile for blood volume for all adults?

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