A researcher was interested in knowing how many people in the city supported a new tax. She sampled 100 people from the city and found that 40% of these people supported the tax. What is the upper limit of the 95% confidence interval on the population proportion?

Q: Isabel Myers was a pioneer in the study of personality types. According to one of her surveys, in a…

A: Solution

Q: uring an election, Kevin and Britney took a poll of 1,200 voters, and asked what the most…

A:

Q: Suppose a consumer advocacy group wants to conduct a survey to find if the proportion of consumers…

A:

Q: Students at a certain college were asked if they have a car. After surveying 823 students, it was…

A: We know that a margin of error tells us how many percentage points our results will differ from the…

Q: In a survey of 4026 ​adults, 708 oppose allowing transgender students to use the bathrooms of the…

A: Given:  n=4026 x=708

Q: When Mendel conducted his famous genetics experiment with peas, one sample of offspring consisted of…

A: Obtain the 95% confidence interval estimate of the percentage of yellow peas. The 95% confidence…

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In poll,…

A:

Q: In a survey of 2000 adults in a recent​ year, 708 made a New​ Year's resolution to eat healthier.…

A: Confidence interval for population proportion is given by, p^ +- z* √(pq/n) At 90% z = 1.645 At 95%…

Q: In a survey of 3985 ​adults, 711 oppose allowing transgender students to use the bathrooms of the…

A: Given, n=3985 x=711 To find a confidence interval for a population proportion.

Q: An accounting firm has 1200 clients. From a random sample of 120 clients, 110 indicated very high…

A: Given : An accounting firm has 1200 clients So,  Population size (N) = 1200 Sample size (n) = 120…

Q: A student polls his school to see if students in the school district are for or against the new…

A: Given: n=600 and x=480. Then,p^=xn=480600=0.8

Q: You're considering going to graduate school, and you would like to know how many people would…

A: From the provided information Sample size (n) = 29, People who recommend x = 9 The sample proportion…

Q: In a survey of 4052 ​adults, 723 oppose allowing transgender students to use the bathrooms of the…

A: It is given that x = 723 and n= 4,052.

Q: In a survey of 2002 adults in a recent​ year, 701 made a New​ Year's resolution to eat healthier.…

A: Given:

Q: m what their favorite color was. 23 people said their favorite color is blue. Using this sample,…

A: Sample proportion is the fraction of successful samples and total number of samples. Here,  Total…

Q: A researcher wanted to check whether the percentage of Canadian adults with obesity has decreased in…

A: Number of Canadian adults in 2005= 75 Number of Canadian adults in 2009 = 120   significance level =…

Q: In a survey of 50,00 people, 80% indicated that they listened to their favorite radio station…

A: Hern= 5000 P^ = 0.80 We have to construct 95% ci for p

Q: A pollster wanted to predict the upcoming results of the 2020 presidential elections in a local…

A:

Q: Find a 95% confidence interval for the proportion of renters.

A: It is given that  Favourable cases, X = 360 Sample size, n = 600 Confidence interval = 95%

Q: n a survey of 4026 ​adults, 708 oppose allowing transgender students to use the bathrooms of the…

A:

Q: In your sample of 200 individuals, 10 people identified as bisexual. What is the true proportion of…

A:

Q: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

Q: You are trying to estimate the percent of people in California who have a college degree. You…

A: According to the given information in this question We need to identify that from the given…

Q: In a survey of 1000 people, 850 said they would not to travel to Disney World this summer. Construct…

A: Given: n=1000 and x=850 Then,p^=xn=8501000=0.85

Q: What proportion of college students earn their undergraduate degrees in four years? A college…

A: The formula of the margin of error when the limits given are,

Q: A survey of 300 women shoppers found that 17% of them shop on impulse. What is the 80% confidence…

A: From the provided information,A survey of 300 women shoppers found that 17% of them shop on impulse.…

Q: In a survey of 3983 ​adults, 747 oppose allowing transgender students to use the bathrooms of the…

A:

Q: A researcher wants to estimate the actual proportion of citizens of a certain country who feel that…

A:

Q: In a sample of 300 people, 48 identified as dog owners. Construct a 99% confidence interval for the…

A: Obtain the 99% confidence interval for the true proportion of people who are dog owners. The 99%…

Q: To determine the proportion of Americans who support affirmative action policies for minorities and…

A: The objective is to define the sample size for estimating the true proportion of Americans, who…

Q: An ice cream shop wants to know how many customers enjoy their newest flavor. 200 randomly selected…

A:

Q: wenty years ago, a very famous psychologist specializing in marriage counseling authored a book…

A: Solution: Given information n= 275 Sample size of couples who bought book. X= 217  stayed together…

Q: a magazine provided results from a poll of 2000 adults who were asked to identify their favorite…

A: Given Information: A magazine provided results from a poll of 2000 adults who were asked to identify…

Q: Out of 100 people sampled 48 had kids. Based on this construct a 90% confidence interval for the…

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Q: From a lake, an unknown proportion of fish have been tagged.  You collect a sample of 100 fish taken…

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Q: Suppose we take a survey of 400 students and ask how much they study per week. The result is an…

A: The 100 (1 – α)% confidence interval provides an interval estimation of the required population…

Q: Students at a certain college were asked if they have a car. After surveying 601 students, it was…

A:

Q: The manager at Bell’s Gym wants to know the proportion of members who use the Cardio Machines. A…

A: DETAILED SOLUTION IS PROVIDED BELOWExplanation:

Q: What would answer be at 99% confidence interval?

A: We have given that,  Sample proportion (p̂) = 64% = 0.64 and sample size (n) = 550 Then,  We will…

Q: You want to determine if the proportion of people who will vote for the president next year has…

A:

Q: 59% of 81 delegates in a political convention favored changing the rules to restrict the number of…

A: n= 81P^ = 0.59CI = 0.95P(-z < P <z) = 0.95∴z= 1.96    (∵ z- table)

Q: Assume a nationwide random survey of 800 adults asked about attitudes toward “alternative medicine”…

A: We have given that,  Sample size (n) = 800 and Favorable cases (X) =448 Then,  We will find the 99%…

Q: In a survey of 74 US females, 56 said they had gone to the dentist within the past year. What is…

A: Given X=56 n=74

Q: A study of 1907 traffic fatalities found that 725 were alcohol related. Suppose you want your 99%…

A: Given information Total number of traffic fatalities(n) = 1907 Number of fatalities, alcohol related…

Q: You want to construct a 99% confidence interval for the proportion of retail stores that went out of…

A: The CI for the population proportion, p^±Zp^ (1-p^)nwhere, p^=sample proportion…

Q: A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages.  Construct a…

A: Confidence Interval: In statistics, we can say a range of values of the specified population…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.