2) High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.3. A sample of 81 U.S. adults is chosen. a) What is the sampling distribution of ? b) Find the probability that the proportion of individuals in the sample who have high blood pressure is between 0.24 and 0.35. c) Find the probability that less than 26% of the people in the sample have high blood pressure. d) Find the probability that more than 28% of the people in the sample have high blood pressure. e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high blood pressure? Explain.

2) High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.3. A sample of 81 U.S. adults is chosen. a) What is the sampling distribution of ? b) Find the probability that the proportion of individuals in the sample who have high blood pressure is between 0.24 and 0.35. c) Find the probability that less than 26% of the people in the sample have high blood pressure. d) Find the probability that more than 28% of the people in the sample have high blood pressure. e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high blood pressure? Explain.

Name: 2) High blood pressure has been identified as a risk factor for heart
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: 2) High blood pressure has been identified as a risk factor for heart attacks and strokes. Theproportion of U.S. adults with high blood pressure is 0.3. A sample of 81 U.S. adults is chosen.a) What is the sampling distribution of ?p°b) Find the prob

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: 1. A small college has an entering freshmen class of 528 students. Of these, 211 have brought their…

A: Let X be a random variable such that X: Number of students which brought their own personal…

Q: 7. The mean price of a new car sold in Brooklyn is u =$22,500. o = $4,000. A sample of 100 new cars…

A: According to the Central Limit Theorem, the sampling distribution of sample means follow normal…

Q: A basketball player can make a certain shot 80% of the time? If the player has 5 shots: a) Make a…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: According to the National Center for Education Statistics, 17% of all people in the United States,…

Q: 2. The height of grade 1 pupils are approximately normally distributed with u= 45 inches and a=2. a.…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: The Boeing 727 airliner carries 200 passengers and has doors with a height of 72 inches. Heights of…

A: Use excel formula "=NORMDIST(72, 68.5, 2.4/SQRT(100), TRUE)" to find the probability. Answer:

Q: 2. In a factory that produces pieces of ready-made concrete, if the percentage of producing…

A: Given,n=5p=0.6q=1-p=1-0.6=0.4X=no.of defective piecesX~Binomial (n=5 , p=0.6)P(X=x)=nx px qn-x ;…

Q: The Centers for Disease Control and Prevention say that about 24% of teenagers vape. A college has…

A: It is given that, n = 645 and p=0.24.

Q: Forty percent of students at small colleges have brought their own personal computers to campus. A…

A: Given data: P = 0.40 Sample size (n) = 120

Q: a. What is the probability that between 65% and 80% of the sampled students support the university…

A: As part of a course project, a student gathers data on a university campus. The data are related to…

Q: There are 225 dogs that participated at the National Dog Show that weigh an average of 5 kilos, with…

Q: The mark-and-recapture technique is commonly used to estimate the population size of animal species.…

A: In this case, each of the obtained rabbits has the only options of being "marked" (defined as…

Q: The average weight of an NFL player is 245.7 pounds with a standard deviation of 34.5 pounds, but…

A: From the provided information, Mean (µ) = 245.7 Standard deviation (σ) = 34.5

Q: The length of a pregnancy is normally distributed with a mean of 268 days and a standard dev of…

Q: According to a health publication, 12.8% of persons under the age of 65 have no health insurance…

A: a. The binomial probability distribution is, PX=x=nxpx1-pn-x In the formula, n denotes the number of…

Q: If the probability that a patient experiences postsurgical shock following a certain surgical…

A: Givenp=0.6n=12x~Binomial(n=12,p=0.6)P(X=x)=Cxn×px×(1-p)n-x ; x=0,1,...,n

Q: 3. A construction crew is building a new bridge. A structural component has a 15% chance of failing…

Q: It was decided to assess the awareness of common people about the political scenario in the country.…

A: Given: Total number of people in the survey = 1000 50% of them are educated and rest 50% are…

Q: A survey sponsored by the Vision Council shows that 79% of adults need correction for their…

A: The type of distribution is used in this problem is binomial distribution Reason: There are two…

Q: 20% of produced airbags over 10 years are defective. a. what is the sampling distribution of the…

Q: Determine the probability distribution for the number, X, who have no health insurance coverage. b.…

A: According to health publication, 17.3% of persons under age of 65 have no health insurance coverage.…

Q: a.Describe the sampling distribution of the sample proportion of recent graduates who are…

A: Given: Population proportion P= 0.12 Q = 1-P = 0.88 n= 410 sample proportion p = 0.14

Q: Refer to the sample data for polygraph tests shown below. If one of the test subjects is randomly…

A: Concept of probability: Probability deals with the likelihood of occurrence of a given event. The…

Q: Overweight normal weight high cholesterol 324 368 low cholestere | 450 890

A: High cholesterol Low cholesterol Over weight 324450Normal weight 368890

Q: Suppose that in a given country, the proportion of households owning their own home is 0.65.…

Q: a) Clothes manufacturing machine, the probability of appearing damaged products is 0.02. At the…

A: Provided information is, For cloths manufacturing machine, the probability of appearing damaged…

Q: It was reported that 29% of car crash deaths in Maine were alcohol-related.…

A: Obtain the probability that at most 14 were alcohol-related. The probability that at most 14 were…

Q: The All Ages Records shop finds that 80% of customers entering the store do not make a purchase. One…

A: The provided information is n=180 p=0.80 a. The mean of sample proportion of customers making a…

Q: Describe the types of probability samples and discuss under which conditions they may be the most…

A: Solution-: Describe the types of probability samples and discuss under which conditions they may be…

Q: 2. The average number of mice in a 5-acre rice field is estimated to be 80. Find the probability…

A: Given,The average no.of mice in 5 acre field is 80so, the average no.of mice in 1 acrefield…

Q: 2. It is reported that 54% of college students take on debt to pay for their education. a) Suppose a…

A: Given data: 54% of college students take on debt to pay for their education. I.e ; p = 0.54 Sample…

Q: You are planning a sample survey of small businesses in your area. You will choose an SRS of 150…

A: We have to find out given mean and probability..

Q: • A) Given the data Pulse Rate (beats per minute) Mean St. Dev. Distribution Males 69.6 11.3 Normal…

A: Note: As per my policy i can answer only one question. kindly repost the remaining one. Given data…

Q: 9. To investigate how often families eat at home, a researcher surveyed 100 adults living with…

A: No. of meals eaten at home per week (x) frequency 0 25 1 30 2 25 ≥3 20 total n = 10

Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

Topic Video

Question

2) High blood pressure has been identified as a risk factor for heart attacks and strokes. The
proportion of U.S. adults with high blood pressure is 0.3. A sample of 81 U.S. adults is chosen.
a) What is the sampling distribution of ?
p°
b) Find the probability that the proportion of individuals in the sample who have high blood
pressure is between 0.24 and 0.35.
c) Find the probability that less than 26% of the people in the sample have high blood pressure.
d) Find the probability that more than 28% of the people in the sample have high blood pressure.
e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high blood
pressure? Explain.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

1. The ages of all males from the freshmen students in the University of Santo Tomas is a/an ___________. a. frequency b. sample c. statistic d. population 2. If the probability of a defective bolt is 0.1, determine the mean for the number of defective bolts in a total of 400 bolts. Is the answer 40?
2.Suppose that 60% of middle school students in San Diego wear braces. A random sample of 250 San Diego middle school students is selected. a.What is the mean and standard deviation of the 250 samples students that will have braces? b.What is the probability that at most 190 students in the sample wear braces?
Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
Suppose a family has three children. Assume the likelihood of a girl (G) and boy (B) is the same. How many possibilities are there in the SAMPLE SPACE?
18. Stress at work: In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were sometimes or always stressful. Two hundred workers are chosen at random. a. Approximate the probability that 160 or fewer find their jobs stressful.
According to CTIA, 41% of all U.S. households are wireless-only households (no landline). Choose four households at random. A. What is the probability that at least two will be wireless-only? B. What is the probability that none of them will be wireless-only? C. What is the probability that least 1 of them will be wireless-only? D. Find the mean and standard deviation for the number of households that are wireless-only.
According to a health publication, 16.5% of persons under the age of 65 have no health insurance coverage. Suppose that four persons under the age of 65 are randomly selected. a. Determine the probability distribution for the number, X, who have no health insurance coverage. b. Determine and interpret the mean of X.
3. Two board members were chosen at random from 12 candidates of which 8 were independent candidates. a. Determine the probability distribution for the number of independent candidates selected. b. Find the mean and the variance of the distribution of the number of independent candidates chosen as board members.
10. Ten percent of computer parts produced by a certain supplier are defective. What is the probability that a sample of 10 parts contains more than 3 defective ones?
what is the correct answer for the problem in the image?
According to Quantcast analytics of Crossfits.com, 40% of Crossfitters have post-graduate degrees. Suppose we take a random sample of 60 crossfitters. a. Describe the sampling distribution of the sample proportion of Crossfitters who have post-graduate degrees for samples of size 60. b. Find the probability that at least half of the sample 60 Crossfitters have post-graduate degrees. c. Describe the sampling distribution of the sample proportion of Crossfitters who have post-graduate degrees for samples of size 100
2. 46% of Canadians believe in ghosts. We randomly select a sample of 80 Canadians and ask them if they believe in ghosts. Let the random variable X be the number of Canadians in the sample who believe in ghosts. What is the approximate probability that there will be exactly 43 individuals who believe in ghosts in the sample?