If a sample of 600 people is chosen and the researcher desires to have a maximum error of estimate of 4% on the specific proportion who favor gun control, find the degree of confidence. A recent study showed that 50% were in favor of some form of gun control.

Q: How big of a sample needs to be taken in order to estimate the proportion of children in a community…

A:

Q: Find the critical value for the population mean if there are 756 cats in a sample and you want a 91%…

A:

Q: A survey found that 73% of a random sample of 8344 American adults approved of cloning endangering…

A:

Q: From a random sample of 40 students, a 90% confidence interval for the mean weekly allowance is…

A:

Q: A recent study of a very large number of parents on cyberbullying showed that a 95% confidence…

A: Given data,For 95% CILower limit=0.1238Upper limit =0.2036Proportion (p)=?

Q: What sample size should be obtained if he wants to be within 4 percentage points with 95​%…

A: Given that the margin of error is 4 percentage points. That is, ME=4%=0.04 Confidence level =95% The…

Q: A study found that 73% of elementary students buy lunch at school at least once a month. How large a…

A: Given,sample proportion(p^)=0.73margin of error(E)=0.03α=1-0.95=0.05α2=0.025Z0.025=1.96       (from…

Q: Based on past data, it is known that about 20.5% of people smoke cigarettes. Suppose we take a…

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

Q: An apple, 37% of the people polled answered yes to the question "are you in favor of the death…

A: The provided information is: Sample proportionsp^=0.37 Margin of errorE=0.03 Level of…

Q: . What size sample should be obtained if she wishes the estimate to be within 0.04 with 90​%…

A: here given, p = 0.32 MOE  = 0.04 Z-score for 90% confidence level = 1.645 (  use Excel command…

Q: | If a random sample of 400 students is selected and the researcher decides to have a margin of…

A: E=0.04n=400p^=0.50degree of confidence=?

Q: If we want both intervals to hold at the 90% level of confidence, then the individual intervals must…

A: Relationship between Type I error, Type II error and level of significance:   For small…

Q: A publishing company wants to make biology textbooks more affordable. Their marketing department…

A:

Q: a random sample of 300 persons eating lunch at a department store cafeteria, only 102 had dessert.…

A: Provided data is, in a random sample of 300 persons eating lunch at a department store cafeteria,…

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

A:

Q: A business student is interested in estimating the 99% confidence interval for the proportion of…

A: Here, confidence level is 0.99 and margin of error is 0.04.

Q: A poll conducted randomly in 2014 found that 52% of U.S. adult Twitter users get at least some news…

A: Proportion is 0.52. The standard error 0.024 The absolute value of Zα/2 is 2.5758 using the Excel…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96 and E=0.02.

Q: In a certain village in Turkey, a sample of 100 cl of drinking water is examined and it is found out…

A:

Q: When 290 college students are randomly surveyed, it is found that 120 own a car. Find a 99%…

A: Given that, x=120,n=290 The sample proportion is, Critical values: By using the standard normal…

Q: A recent study indicated that 24% of women over 55 are widows. A researcher wishes to estimate with…

A:

Q: A company reported that 95% confidence interval for the proportion of household who already own a…

A: Z∝/2=1.96 Use Excel funtion: NORMSINV 0.025

Q: the department of public health would like to estimate the proportion of adults who exercise on a…

A: Solution: It is given that the previous study estimated the proportion was close to 20%. Therefore,

Q: A poll taken this year asked 1015 adults whether they were fans of a particular sport and 62% said…

A: sample size (n)=1015  Proportion of this year (p) =0.62 Confidence level = 0.95α = 1- confidence…

Q: A researcher wishes to be 95% confidence that her estimate of the true proportion of individuals who…

A: Given that  Confidence level (C) = 95%  The true proportion of individuals who travel overseas is…

Q: Suppose that you take 1000 simple random samples from a population and that, for each sample, you…

A: Given information Sample size n = 1000 Confidence interval = 95%

Q: If the candidate only wants a 6% margin of error at a 99% confidence lev

A: Given that, The margin of error (E) is 0.06. Assume that p as 0.5.

Q: A researcher was commissioned to find out the proportion of students who use mobile phones in online…

A: Given: X=475N=500ME=0.01CI=0.99

Q: We want to estimate, with a maximum error of .02, the true proportion of all senior medical students…

A: compute sample size ( n ) = n=(Z/E)^2*p*(1-p)

Q: A confidence interval for the difference in the number of friends that men and women have was found…

A: The formula of the midpoint of the confidence interval formula is,

Q: A tv sports commenter wants to estimat th proportion of citizens who "follow professional football."…

A:

Q: For the confidence interval (24,44), the point estimate is and the margin of error is

A:

Q: The police department wants to reduce the margin of error for their 95% confidence interval. If they…

A: Here Given  The police department wants to reduce the margin of error for their 95% confidence…

Q: A researcher wishes to estimate the proportion of adults who have high speed internet access. What…

A:

Q: poll found that 329 out of 763 adults said they would travel to outer space in their lifetime, given…

A: Given: n= 763 ,x= 329 At 92.0 % confidence level , z score= 1.751 Need to find confidence interval…

Q: Beth wants to determine a 80% confidence interval for the true proportion of high school students in…

A: The formula for the confidence interval for population proportion is given by : C.I =…

Q: It is believed that 12% of Americans use a traditional antenna to watch network television. How…

A: Given that  Population proportion p=12%=0.12 Margin of error =E =2%=0.02

Q: A research scientist wants to know how many times per hour a certain strand of bacteria reproduces.…

A: Given, ME (margin of error) = 0.1 μ = 6.1σ2 = 5.76confidence level = 0.99α = 0.01α2 = 0.005       To…

Q: A recent survey conducted in a nearby town showed that 791 out of 1,495 people do most their holiday…

A: Here, the sample proportion is =7911495=0.5291 Now, for 90% confidence z=1.645

Q: Suppose we want to know what proportion p of students in a large university have studied calculus in…

A: Given,E=0.03z value at 95% confidence is Zc=1.96let the proportion be p=0.5n=?

Q: For a population of σ = 16, how large a sample is necessary to have a standard error that is a. less…

A: Obtain the large sample that is necessary to have a standard error that is less than 8 points. The…

Q: A television sports commentator wants to estimate the proportion of citizens who follow professional…

A: Given that Critical value: Using the z-table, the critical value at 96% confidence level is

Q: A researcher wishes to estimate the 95% confidence interval of the proportion of students who show…

A: Given  e=Margin of error=30%=0.30,  p^=30%=0.30, level of significance ɑ=0.05

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

A: a. The sample proportion of yellow peas is, Thus, the sample proportion of yellow peas is 0.262.

Q: Beth wants to determine a 99% confidence interval for the true proportion of high school students in…

A: Suppose p is the true proportion of high school students in that area who attend their home…

Q: When n=343 college students are randomly selected and surveyed, it is found that x=110 own a car.…

A: Here from a sample of 343 college students 110 of them owned a car. We need a 99% CI and margin of…

Q: A researcher wishes to estimate the proportion of adults who have high speed internet access  what…

A: formula for the sample size needed to estimate a population proportion is

Q: If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

A:

Q: A college believes that 26% of applicants to that school have parents who have remarried. How large…

A:

Q: A congressperson wants to estimate the proportion of people in her district that think she is doing…

A:

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.