adults in a recent​ year, 742 made a New​ Year's resolution to eat healthier.   Construct​ 90% and​ 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence interva

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: recent poll, 470 people were asked if they liked dogs, and 40% said they did. Find the margin of…

A: The critical value at 99% confidence level from standard normal table will be:   Following…

Q: In a recent poll, 540 people were asked if they liked dogs, and 10% said they did. Find the margin…

A: We have to calculate 95% confidence level margin of error for single proportion.

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: 2. Compute the confidence interval of population proportion. Among 1500 Filipino women included in a…

A: Given,n=1500x=765p^=xnp^=7651500=0.511-p^=1-0.51=0.49α=1-0.95=0.05α2=0.025Z0.025=1.96     (from…

Q: Out of 500 people sampled, 390 had kids. Based on this, construct a 99% confidence interval for the…

A: Find z-critical value: For the two-tail test, Area on each tail. Area to the left of the normal…

Q: In a survey, people were asked whether they thought sun went around the planet Earth or vice versa.…

A: (a)   Obtain the proportion of people in the survey who believed the sun went around earth. The…

Q: In a survey of 464 registered voters, 143 of them wished to see Mayor Paz lose her next election.…

A:

Q: In a sample of 130 adults, 90 had children. Construct a 99% confidence interval for the true…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: random sample of 500 Jordanian firms, it was found that 420 Jordanian firms made a profit, The…

A: Given that  Sample size (n) = 500 Films made profit (x) = 420 Sample proportion (p) = 420500=0.84…

Q: In a​ survey, 22​% of 230 single women said that they​ "definitely want to have children​."In the…

A:

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: Out of 1,500 licensed drivers, 900 admitted that they do not like to drive at night. What is the 92%…

A: Given Information:  Total Number of drivers = 1500  Number of drivers that do not like to drive at…

Q: In a recent poll, 130 people were asked if they liked dogs, and 24% said they did. Find the margin…

A: Given, Total number of people = 130 Probability that a person likes a dog = 0.24 z value at 99%…

Q: In a recent poll, 290 people were asked if they liked dogs, and 40% said they did. Find the Margin…

A:

Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: The provided information is p=0.14q=1-p=1-0.14=0.86n=500E=3%=0.03p-Represents the proportion of…

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: 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: sample of 624 applicants to the Durmstrang Institute of Sorcery, 133 were accepted. Construct a 90%…

A: Given that  X=133 , n=624 , p=20%=0.20

Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

A:

Q: when 282 college students are randomly selected and surveyed, it is found that 109 own a car. find a…

A: It is given that sample size (n) is 282 and x is 109.

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 sample of 320 adults, 288 had children. Construct a 95% confidence interval for the true…

A: Here, the number of adults had children, x is 288 and the sample size, n  is 320. The known values…

Q: in a recent poll, 130 people were asked if they liked dogs, and 46% said they did. Find the Margin…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: in a recent poll, 220 people were asked if they liked dogs, and 36% said they did . find the margin…

A:

Q: If n = 340 and p (p-hat) = 0.05, construct a 90% confidence Interval. Give your answers to three…

A: Given: n = 340, p hat = 0.05, alpha = 1 - 0.9 =0.1.

Q: 95% confidence interval for the proportion of adults in the United States who say that their…

A:

Q: If n = 420 and ˆpp^ (p-hat) = 0.75, construct a 99% confidence interval. Give your answers to three…

A: Solution: From the given information, p-hat=0.75 and n=420. The confidence level is 0.99.

Q: If n = 380 and X = 304, construct a 95% confidence interval for the population proportion, p. Give…

A: Given: n = 380 x = 304

Q: n = 480 and X = 384, construct a 90% confidence interval for the population proportion, p. Give…

A: Here is given that, n =480   x = 384 We will use one proportion  z confidence interval.

Q: Out of 100 people sampled, 22 had kids. Based on this, construct a 90% confidence interval for the…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of a population…

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

A:

Q: According to a poll of Americans, 79% say that if they had the evidence they would turn in a…

A: It is given that n = 305.

Q: In a recent poll, 430 people were asked if they liked dogs, and 54% said they did. Find the margin…

A: In a recent poll, 430 people were asked if they liked dogs, and 54% said they did. Find the margin…

Q: Construct a 95% confidence interval for the proportion of college students who say they own their…

A: Given : n=410 , X=155  , α=0.05 We want to find the 95% confidence interval for the proportion of…

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: In a sample of 470 adults, 306 had children. Construct a 99% confidence interval for the true…

A:

Q: If n = 200 and ˆpp^ (p-hat) = 0.85, construct a 95% confidence interval. Give your answers to three…

A:

Q: In a sample of 570 adults, 485 had children. Construct a 95% confidence interval for the true…

A: The sample size is 570. The number of successes is 485. We have to construct 95% confidence interval…

Q: if n=320 and p^ (p-hat)=0.72, find the margin of error at 90% confidence level

A:

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: In a sample of 510 adults, 464 had children. Construct a 95% confidence interval for the true…

A: Given that in a sample of 510 adults, 464 had children. 95% confidence level

Q: university dean is interested in determining the proportion of students who receive some sort of…

A:

Q: Of 380 randomly selected medical students, 210 said that they planned to work in a rural community.…

A: The sample of 380 randomly selected medical students in which 210 said that they planned to work in…

Q: In a recent poll, 380 people were asked if they liked dogs, and 75% said they did. Find the margin…

A:

Q: In a recent poll, 570 people were asked if they liked dogs, and 14% said they did. Find the margin…

A: From the Standard Normal Table, the z value for 95% level is 1.96.

Q: A random sample of 25 statistics students was asked: “Have you smoked a cigarette in the past week?"…

A: Given that  Random sample size(n) = 25 Students reported smoking within the past week (X) =6…

Q: In a survey of 356 people who attended a local professional soccer teams most recent home game, 135…

A:

Q: If n = 560 and X = 448, construct a 95% confidence interval for the population proportion, p. Give…

A: The sample proportion is, p^=448560=0.80 The sample proportion is 0.80. Computation of critical…

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.