Over 1034 people, there are 840 who are interested to get the Covid-19 vaccine. Give a 96% confidence interval for the proportion of people NOT willing to get the vaccine.

Q: In a sample of 310 adults, 205 had children. Construct a 99% confidence interval for the true…

A: Given data, n=310 x=205 p=x/n=205/310=0.661 z-value at 99% confidence is Zc=2.576

Q: In a recent poll, 420 people were asked if they liked dogs, and 9% said they did. Find the Margin of…

A: Given: Sample size=n=420,Number of people who liked dogs:x=420×9100=37.8≈38,Significance…

Q: The 95% confidence interval generally is: Select one: a. none of these. b. wider than the 99%…

A: Confidence level -95%   Higher the confidence level, higher the width of the confidence interval.

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: In a sample of 490 adults, 269.5 had children. Construct a 90% confidence interval for the true…

A: Given: n=490 Let x be the children = 269.5 p=xn=269.5490=0.55 The critical value at 0.1 level of…

Q: Suppose that the a college wants to have an idea of the average SAT score of the incoming freshman…

A: The confidence level is 0.90, the standard deviation is 310 and margin of error E is 50.

Q: If n=380 and X = 304, construct a 90% confidence interval. Give your answers to three decimals…

A: Given,n=380 ,x=304p^=xnp^=304380=0.81-p^=1-0.8=0.2α=1-0.90=0.1α2=0.05Z0.05=1.645     (from Z-table)

Q: A 95% confidence interval for the population mean is calculated to be 75.29 to 81.45. If the…

A: A 95% confidence interval for the population mean is calculated to be 75.29 to 81.45.

Q: a. With the group w/o helmets, calculate the 95% confidence interval with head injuries b. With the…

A: Given Data : a. With the group w/o helmets, calculate the 95% confidence interval with head…

Q: In a survey of 2313 adults, 714 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Given, In a survey of 2313 adults, 714 say they believe in UFOs. n=2313 x=714 Sample proportion:…

Q: A researcher found a 90% confidence interval for the proportion of restaurants which earned a profit…

A: From the provided information, Confidence interval is (0.489, 0.6518)

Q: A random sample of 75 college students of MSU is selected and 16 are found to have motorcycles on…

A: From the given information, The sample size is 75. Out of 75 students, 16 are found to have…

Q: In a sample of 500 Canadians, 275 say they would rather retire in the US than in Canada. Calculate…

A:

Q: In a sample of 120 adults, 106 had children. Construct a 99% confidence interval for the true…

A: We have given that,  Favorable cases (X) = 106 and sample size     (n) = 120 Then,  We will find the…

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: In a recent poll, 310 people were asked if they liked dogs, and 40% said they did. Find the Margin…

A: Given data: n = 310p⏞ = 40100=0.40C.I = 99%      =0.99Then, calculate αα = 1-0.99   =0.01Now,…

Q: people from Tanjung Malim has been given cholesterol tests, and 60 of these people had levels over…

A: We have given that,  Favorable cases (X) = 60 and sample size (n) = 150 Then,  We will find the 95%…

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

A:

Q: A sample of 800 persons showed that 15% of them do not have any health insurance. The 95% confidence…

A: Solution: From the given information, p-hat=0.15 and n=800. The confidence level is 0.95.

Q: In a sample of 160 adults, 130 had children. Construct a 90% confidence interval for the true…

A:

Q: In a recent poll, 300 people were asked if they liked dogs, and 71% said they did. Find the Margin…

A:

Q: In a survey of 400 UAE residents, 72 said they trust cryptocurrencies. Find the Lower Confidence…

A:

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: The political candidate has collected data via a survey to determine what proportion of voters in a…

A: The formula for constructing confidence interval for the true proportion is where p is the sample…

Q: A 99% confidence interval (with n = 1, 018) estimates the actual mean amount of internet usage a…

A:

Q: If n=360 and X = 288, construct a 95% confidence interval. Give your answers to three decimals < p…

A: It is given that x is 288 and n is 360.

Q: A researcher takes a sample of 25 people and calculates a 90% confidence interval of (4,24) for a…

A: The confidence interval is (4,24).

Q: Suppose a survey of 200 registered voters showed that 65% supported increases in wealth tax. The 95%…

A: Solution-: We have,  n=200,p^=0.65, The 95% C.I. was (60,70) We want to find what would happen to…

Q: random sample of 800 residents is taken. Of those 800 residents, 170 said their favorite college…

A:

Q: A random sample of 1650 Tennessee residents is taken. Of those 1650 residents, 1200 said they…

A: Given Data Sample Size, n = 1650 Number of successes, x = 1200 Significance level,…

Q: One researcher finds a 95% confidence interval for a prevalence of heart disease in a population as…

A: We have given that  95% confidence interval is  26.2 percent with margin of error 4.2 percent    90%…

Q: a​ poll, ​37% of the people polled answered yes to the question​ "Are you in favor of the death…

A:

Q: If n=260 and X = 208, construct a 95% confidence interval. Give your answers to three decimals __…

A: Solution: From the given information, X=208, n=260 and the confidence level is 0.95. The sample…

Q: If a 90%, a 95% and a 99% confidence interval are foung for a population mean, describe how the 3…

A: Population mean CI for known population standard deviation is, CI=x¯±Zσnwhere,σ=population standard…

Q: In a​ poll, 51​% of the people polled answered yes to the question​ "Are you in favor of the death…

A: Let p denote the proportion of people answered yes to the question. Let E denote the margin of…

Q: A 90% confidence interval for the proportion of Americans with cancer was found to be (0.185,…

A:

Q: Find a 95% confidence interval for the true population proportion.   In a poll of 1079 college…

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

Q: Out of 864 students surveyed, 310 of them dislike the Summer Beach Games; with a Degree of…

A: Given n=864, x=310, and degree of confidence=94%

Q: Kit and Casey are each attempting to estimate the proportion of college students who can play at…

A: Given Information:- P(At least one musical instrument) = 0.35 Kit's confidence interval = (0.308,…

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: Out of 600 people sampled,  510 had kids. Based on this, construct a 90% confidence interval for the…

A: It is given that Out of 600 people sampled,  510 had kids.

Q: A poll found that82​%of a random sample of 1093 adults said that they believe in ghosts. a.…

A: a) Given that n=1093p^=82%=0.82Confidence level=99%=0.99Significance level=0.01 The z critical value…

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: US Adults, 2439 say they hve contributed to a charity in the past 12 months. Construct the 95%…

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

Q: How large a sample is needed if we want to believe 98% that the proportion of the sample found lies…

A:

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

A:

Q: An online survey of 385 individuals found that 114 had fully completed the game God of War. Which of…

A:

Q: in a public opinion pool 1000 randomly selected persons were asked whether they would vote for…

A: Here, x =357 The sample size n = 1000. The absolute value of Zα/2 is 1.645 using the Excel formula…

Q: If 390 people were asked if they liked dogs, and 82% said they did What is the margin of error of…

A: The sample size is 390, proportion is 0.82. Computation of critical value:…

Q: A random sample of 180 men indicated that 50 were smokers, and a random sample of 150 women surveyed…

A: Given; p1=50180=0.28p2=39150=0.26Level of significance=0.02 Confidence interval is given by-…

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.