A recent Gallop poll showed that 672 of 1019 adults nationwide think that marijuana should be lagalized  a. Find the margin of error that corresponds to a 95% confidence interval

Q: A recent study among 150 street hawkers in Cape Town showed that 48 of them are of the opinion that…

A: Given Data: n=150 x=48

Q: In a random sample on 200 airline passengers, 84 said they would like a window seat. What is the…

A: 1. The point estimate for the proportion of passengers wishing a window seat is, p^=xn=84200=0.42…

Q: Calculate the 95% and 99% population proportion confidence intervals for this finding.

A: Answer: Given that  the random sample of 100 people  n=100  r=74 The test statistics for population…

Q: When 460 junior college students were surveyed, 100 said they have a passport. Construct a 95%…

A: Given that there are 460 junior college students and 100 said they have a passport. That is, n=460…

Q: Mrs. Voorhees claims that a Bowie knife is the most effective method of disposing rowdy campers. In…

A:

Q: A Harris Poll survey of smokers in which 805 of a sample of 993 smokers agreed that smoking would…

A: Given: x=805n=993α=0.01

Q: In a recent poll, 340 people were asked if they liked dogs, and 31% said they did. Find the margin…

A:

Q: A recent Gallop poll showed that 672 of 1019 adults nationwide think that marijuana should be…

A:

Q: A medical director needs to know the proportion of patients who have a single bed in their room. A…

A: It is given that sample size (n) is 200 and p-hat value is 0.59.

Q: In a recent poll, 260 people were asked if they liked dogs, and 13% said they did. Find the margin…

A:

Q: In a random sample of 90 homeowners, 71% of them have received robocalls over an outstanding debt.…

A: Sample size(n)=90 Sample proportion who have received robocalls  over an outstanding…

Q: A survey of 1,898 adults with lawns conducted by a researcher found that 45% of the adults said that…

A: Obtain the 95% confidence interval of the true proportion who said that dandelions were the toughest…

Q: A random sample of 360 medical doctors showed that 106 had a solo practice. As a news writer, how…

A: Obtain the percentage of medical doctors in solo practice. The percentage of medical doctors in solo…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: In a recent poll, 150 people were asked if they liked dogs, and 55% said they did. Find the margin…

A:

Q: in a survey of 2230 adults, 57% thinks that land travel through a tourist bus is much more reliable…

A: Given,sample size(n)=2230sample proportion(p^)=0.57α=1-0.95=0.05α2=0.025Z0.025=1.96       (from…

Q: random sample of 1200 home owners in a particular city found 252 home owners who had a swimming pool…

A: From the given information we want to find the 95 % confidence interval for true proportion.

Q: Of 400 randomly selected medical students, 21 said that they planned to work in a  rural community.…

A:

Q: airline has surveyed a simple random sample of air travelers to find out whether they would be…

A:

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

A:

Q: perimental treatments or medicines. The sample consisted of 1220 adult Internet users, and…

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

Q: search for the Ford Motor Company, you find that a random sample of 800 households includes 721 in…

A: At 98% confidence level, the z value is 2.33 which can be obtained by using the standard normal…

Q: In a recent poll, 260 people were asked if they liked dogs, and 67% said they did. Find the margin…

A: Given: p = 67%=0.67 n= 260 The value of z at a 90% confidence level is 1.645, which can be found by…

Q: It was observed that 30 of the 100 randomly selected students smoked. Find the confidence interval…

A: It is given that, 30 out of 100 randomly selected students smoked i.e. proportion of the student who…

Q: In simple random sample of 150 of workers, 22 said their workplace environment is toxic. Construct a…

A: We have to find out given confidence interval..

Q: To find the proportion of San Diegans subscribed to Disney+ in 2019, a researcher randomly selected…

A: Given that, n=200 p^=101200=0.505

Q: In a recent poll, 170 people were asked if they liked dogs, and 24% said they did. Find the margin…

A:

Q: From a sample of 2412 Jawas, 1013 said they had recently sold a stolen droid to a moisture farmer.…

A: We want to find the 99%CI for population proportion (p) Given  X=1013, n=2412 ɑ=0.01

Q: Out of a sample of 1,450 people, 1,000 said they prefer to drive themselves to work rather than…

A:

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: he manager of the dairy section of a large supermarket took a random sample of 250 egg cartons and…

A: Given : The manager of the dairy section of a large supermarket took a random sample of 250 egg…

Q: In a sample of 900 people, 378 say they snooze the alarm more than once in the morning. Find a 95%…

A: Given,   The sample proportion is,

Q: A survey of 50 students in grades 4 through 12 found 66%have classroom Wi-Fi access. Find the 99%…

A: The sample proportion is : p=0.66 The sample size is :n=50 The formula for testing the population…

Q: A tech company believes that the percentage of residents in the town XYZ that own a cell phone is…

A: Given: p=0.70x=130n=200 The sample proportion is obtained as below: p^=xn=130200=0.65 Hypothesis:…

Q: A researcher who was interested in knowing how many people in a city supported a new retirement plan…

A:

Q: In a survey of 1024 US adults, 287 said that their favorite sport to watch is football. a. Find a…

A: From the provided information, Sample size (n) = 1024 Out of which 287 said that their favourite…

Q: n a recent Zogby International Poll, nine of 48 respondents rated the likelihood of a terrorist…

A: Given that : x = 9 n = 48

Q: To find the proportion of San Diegans subscribed to Disney+ in 2019, a researcher randomly selected…

A:

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: In a preelection poll, a pollster finds that 442 out of 650 people polled favor Smith. Construct the…

A: We need to construct the 95% confidence interval for the population proportion. We have given the…

Q: In a recent poll, 110 people were asked if they liked dogs, and 40% said they did. Find the margin…

A: For 99% confidence intervalα=1-CI=1-0.99=0.01So, zα2=z0.012=z0.005=2.576

Q: Wisconsin Public Radio wants to duplicate a survey conducted in 2011 that found that 68% of adults…

A: From the provided information, Sample proportion (p̂) = 0.68 The z critical value at 90% confidence…

Q: A member of the Lottery Commission requests a 90% confidence interval estimate but with a smaller…

A: The margin of error depends on the three factors: Level of confidence: The margin of error…

Q: In a certain state, a survey of 500 workers showed that 38% belonged to a union.  Find the 93%…

A: Computation of critical value: 1-α=0.93α=0.07α2=0.0351-α2=0.965 The critical value of z-distribution…

Q: Construct a 99% confidence interval for the true proportion of all car license applications that…

A: Given Information:x=25n=155c=99%=0.99

Q: In a sample of 500 Canadians, 225 say they would rather retire in Florida than in Canada. Calculate…

A:

Q: f a Random Sample of 450 adults includes 155 who identify as happy, compute an 80% confidence…

A: Given data,n=450x=155sample proportion p=xn=155450=0.34z-value at 80% confidence is Zc=1.282

Q: In a recent poll, 210 people were asked if they liked dogs, and 59% said they did. Find the margin…

A: Find z-critical value:…

Q: Construct a 99% confidence interval for the proportion of all motorbike license applications that…

A: We want to find the 99% confidence interval  Given  X=20 , n=175

Q: Flagstaff found 470 NAU students who drink coffee daily. Find a 95% confidence interval for the true…

A: Given

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.