Question
7. (Sec. 7.2) In a survey of 2004 American adults, 501 of them said that they believed in astrology
(a) Calculate and interpret a confidence interval at the 95% confidence level for the proportion of all
adult American adults who believe in astrology
(b) Calculate and interpret a 95% lower confidence bound for the proportion of all adult American
adults who believe in astrology
expand button
Transcribed Image Text:7. (Sec. 7.2) In a survey of 2004 American adults, 501 of them said that they believed in astrology (a) Calculate and interpret a confidence interval at the 95% confidence level for the proportion of all adult American adults who believe in astrology (b) Calculate and interpret a 95% lower confidence bound for the proportion of all adult American adults who believe in astrology
Expert Solution

Want to see the full answer?

Check out a sample Q&A here
Blurred answer
Students who’ve seen this question also like:
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
Not helpful? See similar books
MATLAB: An Introduction with Applications
marketing sidebar icon
Want to see this answer and more?
Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*
*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: n the year 2017, the mean and standard deviation for the quality grade point average of the…

A: Confidence interval: It is defined as the range which contains the value of true population…

Q: Step 1 of 3 :   Find the point estimate that should be used in constructing the confidence interval.…

A: The point estimate is, p^1-p^2=x1n1-x2n2=355653-201597=0.5436-0.3367=0.2069≈0.207

Q: To construct the confidence interval, the quantity tsm is subtracted from and added to the sample…

A: Given:

Q: I am confused about how to find the confidence interval (at the 90% level) of the remaining data…

A: I am only solving C & D that based on your calculations. c) We see that, removing the outlier…

Q: A researcher is interested in constructing a 99% confidence interval for the proportion of Alzheimer…

A: Given Information :  A researcher is interested in constructing a 99% confidence interval for the…

Q: A researcher is interested in constructing a 99% confidence interval for the proportion of Alzheimer…

A: Click to see the answer

Q: A study found that a 95% confidence interval for the mean μ of a particular population was computed…

A: Given, 95% confidence interval 10 ± 4  Sample size  = 1200         To write the conclusion regarding…

Q: 13. In another pre-election poll, a pollster finds that 438 out of 600 people polled favor Smith.…

A: It is given that sample size (n) is 600 and x is 438.

Q: The figure to the right shows the results of a survey in which 2500 college graduates from the year…

A: Expected to their first employer for 3 or more years: The sample size n= 2500.for The sample…

Q: two 95 percent confidence intervals will be constructed to estimate the difference in means of two…

A: Solution: The confidence interval for the difference in means calculated by using the formula:

Q: A sociologist is comparing the proportion of teenage boys who receive a text message at least once…

A: The  Conditions for the Confidence interval for the difference in population proportions • Samples…

Q: he AC breakdown voltage of an insulating liquid indicates its dielectric strength. The following are…

A: Obtain the 95% confidence interval for the true average breakdown voltage. The 95% confidence…

Q: With 90% confidence the difference in the proportions of Texans and New Yorkers who favor a new…

A: a. The 566 randomly selected Texans surveyed, 421 were in favor of the initiative and of the 548…

Q: The confidence interval at the 95% level of confidence for the true population proportion was…

A: The 95% confidence interval is CI95=(0.665,0.835). We know, that as the level of confidence…

Q: Two 95 percent confidence intervals will be constructed to estimate the difference in means of two…

A: Click to see the answer

Q: You are constructing a 99% confidence interval for the proportion of all caterpillars that…

A: Given information- Sample size, n = 396 We have given that out of 396 randomly selected caterpillars…

Q: A nutritionist took a random sample of 60 college students at Harvard and made a 95% confidence…

A: Given information: A random sample of n = 60 college students at Harvard is considered. A…

Q: In a study of the infestation of a particular species of lobster by two types of barnacles, the body…

A: The sample mean and sample standard deviation can be calculated as;

Q: A Industrial Psychology test was written. From a sample of 50 students and it was found that the…

A: Click to see the answer

Q: In a study, Group 1 was found to have an average of 53 and a population standard deviation of 13 out…

A: Click to see the answer

Q: Males and females were asked what they would do if they received a $100 bill in the mail that was…

A: For Males : The sample size , N1=70N_1 = 70 Those who said Yes ,  X1=55X_1 = 55X1​=55:…

Q: A research found that 70% of 1500 randomly selected U.S. adults believe in global warming. Find the…

A: Solution: From the given information, p-hat=0.70 and n=1500.

Q: Obtain an 80% confidence interval for the difference in proportions of women in these two…

A: FIRST random sample of 250 electrical engineers had 80 women, and the second random sample of 175…

Q: Part 3 of 4 (c) Find the 90% confidence interval of the mean number of jobs. Round intermediate and…

A: Given,sample size(n)=55sample mean(x¯)=7.3population standard deviation(σ)=1.8

Q: A student was asked to find a 90% confidence interval for the proportion of students who take notes…

A: Given data: Confidence level  = 90 % Confidence interval =0.12 < p < 0.28 To find: Which…

Q: The 95% confidence interval for the population proportion of yes responses is (0.55, 0.71) for…

A: From the provided information, The 95% confidence interval for the population proportion of yes…

Q: a. Find the 95% confidence interval for the mean (μ) of all couples not practicing birth control.…

A: A researcher is trying to estimate the average number of children born to couples who do not…

Q: The figure to the right shows the results of a survey in which 999 adults from Country​ A, 1006…

A: Hey, since there are multiple subparts posted, we will answer the first three subparts. If you want…

Q: initiative is between (round to 3 decimal places) and (round to 3 decimal places). b. If many groups…

A: given  n1=579x1=408n2=546x2=450 then the proportion are  p1=x1n1=408579=0.704663…

Q: 8% of a sample of 400 foster children say they have suffered some type of abuse from their foster…

A: Click to see the answer

Q: A student was asked to find a 90% confidence interval for the proportion of students who take notes…

A: Click to see the answer

Q: A student was asked to find a 90% confidence interval for the proportion of students who take notes…

A: The provided information are:

Q: Say that on average teenagers eat 10 slices of pizza each week, with a 95% confidence interval of…

A: Since , on average teenagers eat 10 slices of pizza each week, with a 95% confidence interval of…

Q: The figure to the right shows the results of a survey in which 1001 adults from Country​ A, 1002…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: Which of the following is the confidence length of the interval estimation at the 90% confidence…

A: Given : n=354 , X=1200  , α=0.10 We want to find the length of the confidence interval.

Q: 6) In a poll, 1000 randomly selected adults are surveyed and 400 of them support a certain social…

A: Given: x = number of people who support a certain social program = 400 n = sample size = 1000 ∝ =…

Q: A sociologist develops a test to measure attitudes towards public transportation, and 37 randomly…

A: given that,sample mean, x =58.5standard deviation, s =19.7sample size, n =37standard error = sd/…

Q: How do you Express the confidence interval (0.839, 0.958) in the form of p±E?

A: The formula for the confidence interval of population proportion is (p̂ ± E).

Q: A student was asked to find a 99% confidence interval for the proportion of students who take notes…

A: The correct interpretation is with 99% confidence the proportion of all students who take notes is…

Q: How effective is gastric bypass surgery in maintaining weight loss in extremely obese people? A…

A: Given information No of subjects who had received gastric bypass surgery (n) = 426 Proportion of…

Q: Question 3 fn 180 and p (p-hat) - 0.9, construct a 95% confidence interval, Give your answers to…

A: At 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: Chapter 6, Section 1-CI, Exercise 024 Social Networking Sites In a survey of 2255 randomly…

A: Confidence interval: Formula of the confidence interval for the population proportion is given by…

Q: a) Construct a 95% confidence interval for the slope.

A: a) Let the variable x denote the speed, and y denote the noise. The regression analysis is conducted…

Q: If n = 180 and X = 144, construct a 90% confidence interval for the population proportion, p. Give…

A: Solution: From the given information, X=144, n=180 and the confidence level is 0.90. The sample…

Q: Give the endpoints of the 90% confidence interval for the true population proportion of fruit flies…

A: The sample size is n = 500 And number of flies with gene, X = 200 At 90% confidence level, the…

Q: Give the endpoints of the 90% confidence interval for the true population proportion of fruit flies…

A: Sample size is given by n = 500 And number of flies with gene, X = 200 At 90% confidence level, the…

Q: Find and interpret a 90% confidence interval for the sale price when the corresponding TV size is…

A: Click to see the answer

Q: You are interested in constructing a 99% confidence interval for the proportion of all caterpillars…

A: Given information Total caterpillars (n) = 394 Number of butterflies(x) = 48 Sample proportion

Q: There are 300 welders employed at Maine Shipyards Corporation. A sample of 30 welders revealed that…

A: Click to see the answer

Q: If there was a 95% confidence interval of say, (0.48, 0.68), about a product being preferred by…

A: The confidence interval at 100 (1 – α) % confidence level gives us an interval estimate about the…

Knowledge Booster
Recommended textbooks for you
  • MATLAB: An Introduction with Applications
    Statistics
    ISBN:9781119256830
    Author:Amos Gilat
    Publisher:John Wiley & Sons Inc
    Probability and Statistics for Engineering and th...
    Statistics
    ISBN:9781305251809
    Author:Jay L. Devore
    Publisher:Cengage Learning
    Statistics for The Behavioral Sciences (MindTap C...
    Statistics
    ISBN:9781305504912
    Author:Frederick J Gravetter, Larry B. Wallnau
    Publisher:Cengage Learning
  • Elementary Statistics: Picturing the World (7th E...
    Statistics
    ISBN:9780134683416
    Author:Ron Larson, Betsy Farber
    Publisher:PEARSON
    The Basic Practice of Statistics
    Statistics
    ISBN:9781319042578
    Author:David S. Moore, William I. Notz, Michael A. Fligner
    Publisher:W. H. Freeman
    Introduction to the Practice of Statistics
    Statistics
    ISBN:9781319013387
    Author:David S. Moore, George P. McCabe, Bruce A. Craig
    Publisher:W. H. Freeman
  • MATLAB: An Introduction with Applications
    Statistics
    ISBN:9781119256830
    Author:Amos Gilat
    Publisher:John Wiley & Sons Inc
    Probability and Statistics for Engineering and th...
    Statistics
    ISBN:9781305251809
    Author:Jay L. Devore
    Publisher:Cengage Learning
    Statistics for The Behavioral Sciences (MindTap C...
    Statistics
    ISBN:9781305504912
    Author:Frederick J Gravetter, Larry B. Wallnau
    Publisher:Cengage Learning
    Elementary Statistics: Picturing the World (7th E...
    Statistics
    ISBN:9780134683416
    Author:Ron Larson, Betsy Farber
    Publisher:PEARSON
    The Basic Practice of Statistics
    Statistics
    ISBN:9781319042578
    Author:David S. Moore, William I. Notz, Michael A. Fligner
    Publisher:W. H. Freeman
    Introduction to the Practice of Statistics
    Statistics
    ISBN:9781319013387
    Author:David S. Moore, George P. McCabe, Bruce A. Craig
    Publisher:W. H. Freeman