In a sample of 270 adults, 151 had children. Construct a 90% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three places D<

Q: In a survey of 2285 ​adults, 734 say they believe in UFOs.   Construct a 95% confidence interval for…

A: Given that, In a survey of 2285 ​adults, 734 say they believe in UFOs. 95% confidence level

Q: Out of a sample of 600 adults aged 18 to 30, 162 still lived with their parents. Based on this,…

A:

Q: In a survey of 2279 ​adults, 729 say they believe in UFOs. Construct a 90% confidence…

A:

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 survey of 3084 adults aged 57 through 85 years it was found that 81.9% of them used at least…

A: Given : Sample Size, n = 3084 confidence level,c=0.9 Significance level, α…

Q: í 600 people sampled, 348 had kids.

A: Given that  Sample size (n) = 600 Had kids (X) = 348   We know that  Best point estimate (p)= xn…

Q: A survey of 700 non-fatal accidents showed that 167 involved uninsured drivers. Construct a 99%…

A: Given data,n=700x=167Point estimate isp=xn=167700=0.2386Construct a 99% confidence interval?

Q: In a survey of 2344 ​adults, 715 say they believe in

A: Given that there are 2344 adults and 715 say they believe in UFOs. Consider the sample proportion,…

Q: We surveyed 53 people in an attempt to determine the proportion of Americans who lease a vehicle. 13…

A: The proportion of sample Americans who lease a vehicle is, Thus, the proportion of sample Americans…

Q: In a recent poll, 410 people were asked if they liked dogs, and 24% said they did. Find the Margin…

A: We have to find margin of error.

Q: Out of 600 people sampled, 552 had kids. Based on this, construct a 90% confidence interval for the…

A: In statistical inference, there are two types of estimation,  Point estimation and Interval…

Q: Out of 240 sample students surveyed, 187 students are planning to take classes during the…

A: We have given that the sample size n=240 and favourable cases X=187. Sample proportion p^ = X/n.

Q: In a survey of 2310 adults, 706 say they believe in UFOS. Construct a 99% confidence interval for…

A: It is given that sample size (n) is 2,310 and x is 706.

Q: Out of 200 people sampled, 72 had kids. Based on this, construct a 90% confidence interval for the…

A: Givensample size(n)=200x=72sample proportion(p^)=xn=72200=0.36Confidence level=90%

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 random sample of 900 car owners in a particular city found 252 car owners who received a speeding…

A: Given,n=900x=252p^=xnp^=252900=0.281-p^=1-0.28=0.72α=1-0.95=0.05α2=0.025Z0.025 =1.96   (from…

Q: In a recent poll, 410 people were asked if they liked dogs, and 32% said they did. Find the Margin…

A:

Q: Out of 400 people sampled, 68 had kids. Based on this, construct a 99% confidence interval for the…

A: Solution: Let X be the number of people had kids and n be the number of people sampled. From the…

Q: In one city, 59.6% of the 1500 students surveyed said they eat at the school cafeteria. Find the 95%…

A: Given, Sample size=n=1500 p^=0.596 α=0.05

Q: The 90% confidence interval is from to. (Round to three decimal places as needed.)

A: A poll of 1030 adults in a country was conducted by telephone. Of those surveyed, 139 had…

Q: Find ??/2 for the 93% confidence interval. Select one: A. 1.83 B. 1.81 C. 1.80 D. 1.82

A: Solution: Given information: Confidence level = 93% = 0.93 α=1-confidence level α=1-0.93= 0.07…

Q: In a survey of 2255 adults, 741 say they believe in UFOS. Construct a 95% confidence interval for…

A:

Q: In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: According to the given information in this question We need to find the 90% confidence interval of…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying…

A: Solution: Given that, Estimate the proportion of students on her campus who eat cauliflower n=20 #…

Q: In a survey of 4061 ​adults, 738 say they have seen a ghost. Construct a​ 99% confidence interval…

A: In this question, it has been given that 738 people out of 4061 people have seen the ghost, we have…

Q: In a sample of 360 adults, 245 had children. Construct a 99% confidence interval for the true…

A:

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

A:

Q: In a survey of 2298 ​adults, 709 say they believe in UFOs. Construct a 95% confidence interval for…

A:

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1229 males surveyed,…

A: From the provided information,

Q: The sample proportion p̂ is important in calculating a confidence interval. Find p̂ for a sample…

A: Answer:- Given, Sample size ,n = total number of responses = 80 Total number of "yes" responses , x…

Q: 9. A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidence…

A: In a survey of 280 homeless persons showed that 63 were veterans.

Q: In a survey of 3089 adults aged 57 through 85 years, it was found that 88.5% of them used at least…

A:

Q: In a survey of 2291 adults, 743 say they believe in UFOs. Construct a 99% confidence interval for…

A: sample size(n)=2291No. of adults say they believe in UFOs(x)=743

Q: In a survey of 2286 ​adults, 745 say they believe in UFOs.   Construct a 90% confidence interval for…

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

Q: Out of 400 people sampled, 220 had kids. Based on this, construct a 99% confidence interval for the…

A: The random variable X follows binomial distribution. X ~ B (n, p) The sample size is 400. The number…

Q: In a survey of 2318 adults, 747 say they believe in UFOs. Construct a 99% confidence interval for…

A: The 90% confidence interval for the population proportion is between (0.297,…

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 the margin of​ error, using a​ 95% confidence​ level, for estimating the percentage of all…

A: Given:- simple random sample of 1200 young people  so, n= 1200 86% had earned a high school diploma…

Q: 3. In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: Given : Sample size of people (n) = 300 Let X : No. of people from sample  who said they watched…

Q: At one large college, 1867 out of the 2500 students surveyed said they plan to take another science…

A: The known values are, p^=1,867/2,500=0.7468, n=2,500. Using standard normal table, the critical…

Q: In a survey of 3177 adults aged 57 through 85 years, it was found that 83.6% of them used at least…

A: Given that,  Sample size is n= 3177 And proportion, p= 83.6%  83.6% on 3177 people used at least one…