Make a 95% confidence interval for p1 - P2 given that p-hat, is .38, p-hat2 is.35, n1 = 100 and n2 = 144.
Q: A random sample of 423 adult women showed that 64% are currently married. Another sample of 310…
A: Solution: From the given information,
Q: A research study reported a 95% confidence interval for the mean time of hip surgeries based on a…
A: Given Sample size n=91 95% CI for population mean μ is (116 minutes, 138 minutes).
Q: A study of 30 college students showed that 25 are binge watching series. Find a 95% confidence…
A: Given x=25 n=30 95% confidence interval
Q: The 99.7% confidence interval for the mean length of frog jumps is (12.64 cm, 14.44 cm). Which of…
A: Confidence interval is the interval on the population parameter which can be interpreted as that the…
Q: Construct the 99% confidence interval for the difference ,-, when x-473.77, x-31743, ,-40.99,…
A:
Q: Over 1034 people, there are 840 who are interested to get the Covid-19 vaccine. Give a 96%…
A:
Q: Variety magazine recently ask a random sample of readers if Disney Plus was "as good as" Netflix.…
A: The 90% confidence interval is [0.4575, 0.5225]
Q: A study was done to determine whether there is a relationship between snoring and the risk of heart…
A: a. From the given information, x1=89, n1=1105, x2=22 and n2=1379.
Q: If a school district takes a random sample of 80 Math SAT scores and finds that the average is 421,…
A:
Q: A random sample of 100 Colorado residents is selected, and it is found that 82% of them have Subaru.…
A:
Q: Suppose a TA wanted to estimate the proportion of students who failed Stat 119 for the 980 students…
A: Obtain the point estimate for the true proportion of students who failed the course. The point…
Q: Data were collected from a study that followed 1,490 Australian married couples for three years to…
A: Given data,nneither=971xneither =42pneither=42971=0.043xatleast one =70natleast one =519patleast…
Q: The Centers for Disease Control and Prevention reported a survey of randomly selected Americans age…
A: Confidence interval for Proportions : The following is the formula for confidence interval of the…
Q: Ten car drivers were asked to parallel park 2 cars having very different wheel bases and turning…
A: Sample sizen=10 The 90% confidence interval for the mean differences is [-2, 5]. At the 90% level…
Q: A surprising number of young adults (ages 19 to 25) still live in their parents’ homes. A random…
A: Given X1=986, n1=2253, X2=923, n2=2629
Q: Give a 99.8% confidence interval, for 41 - P2 given the following information. = 55, = 2.17, s =…
A:
Q: Among a random sample of 400 restaurant workers, we find that 6.25% of workers have been working at…
A:
Q: Ten medical universities in Turkey were surveyed. The sample shows that from 250 resident students,…
A: Data for resident students:The sample size is The number of successes (being women) is Data for…
Q: Find the 68% confidence interval for the percentage of leaky diapers with a sample of 100 diapers…
A: Let X be the number of defective diapers and n is the number of diapers. From the given information,…
Q: Suppose that the confidence interval for the difference in the average brain wave activity is :…
A: Given: The confidence interval based on the difference including the average brain based on the wave…
Q: A trade magazine routinely checks the drive-through service times of fast-food restaurants. An…
A: Introduction: There are 591 customers at a fast-food chain under study. The 80% confidence interval…
Q: consumer watchdog group estimates the mean weight of 1-ounce fun size candy bars to see if customers…
A: It is given that The 95% CI is CI = ( 0.994, 0.998 )
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: A sample of 300 of electronic components produced showed 36 non-conforming ones. Construct a 95%…
A: Givensample size(n)=300x=36p^=xn=36300=0.12confidence…
Q: A Hollywood film producer is working on a new action film. She wants to estimate the true mean…
A: Confidence interval for mean gives the probabilit that the parameter lies between the two values…
Q: One of Mendel s famous genetic experiments yielded 580 peas with 428 of them green and 152 yellow.…
A: The total number of peas taken for a genetic experiment is 580Number of yellow peas=152Number of…
Q: Construct a confidence interval for p1 - p2 at the given level of confidence. X1 = 27, n1 = 237, x2…
A: Given,X1=27 , n1=237X2=39 ,…
Q: A company checking the productivity of its assembly line monitored a random sample of workers for…
A: Solution: The 95% confidence interval for the the mean number of items produced daily by each worker…
Q: A drug manufacturer conducted a study to try to determine if the proportion of elderly patients that…
A: The 95% confidence interval for the difference of proportions (elderly less younger adults) was…
Q: A random sample of 100 employees at a company shows that 42 drive US made automobiles (the rest…
A: A random sample of 100 employees at a company shows that 42 drives US made automobiles p = Sample…
Q: A race director for a local 10 kilometer “fun run” is trying to estimate the mean time it will take…
A: Confidence interval approach: If the confidence interval contains the population parameter value,…
Q: If n=260 and p' (p-prime) = 0.84, construct a 99% confidence interval. Give your answers to three…
A: Given: n =260 p' =0.84 we need 99% confidence interval
Q: A random sample of n1n1 = 228 people who live in a city were selected and 85 identified as a…
A: Given n1=228 n2=101 X1=85 X1=54
Q: A survey found that 611 out of 663 college graduates cannot correctly spell the word aluminum. Find…
A: Given that A survey found that 611 out of 663 college graduates cannot correctly spell the word…
Q: A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 246…
A: Given Information: Sample size (n) = 12 Sample mean (x¯) = 246 Sample standard deviation (s) = 11.7…
Q: Several educators are starting to create videos for their classes in distance learning. A large…
A: Given : Confidence interval = (9.25 , 15.37)
Q: A random sample of 50 students at a large high school resulted in a 95 percent confidence interval…
A: Given info: A random sample of 50 students at a large high school resulted in a 95 percent…
Q: A new sneaker claims that it can make male athletes jump higher. A sample of 47 male athletes were…
A:
Q: Most married couples have two or three personality preferences in common. A random sample of 384…
A: Given X1=130 X2=200 n1=384 n2=574
Q: A survey was conducted of visitors to the Jakarta Fair. For this reason, two groups of samples were…
A: There are totally 500 visitors for women in which 325 people said they were satisfied with the…
Q: The mileage a car got on 5 trips from Greenwood to Greenville was used to create a 90% confidence…
A: Solution Given that 90% confidence interval is (32.32, 38.32).
Q: If 64 out of 320 people received fruit in addition to candy what are the 95% confidence interval…
A:
Q: A researcher comparing the means of dependent samples consisting of 30 matched pairs and obtained a…
A: Given that: Sample size(n) =30 Mean difference =5 Standard error of mean difference =2 The…
Q: A random sample of 202 shoppers at bluewater were asked why they chose to stop at location. 93…
A: Given that Sample size n =202 Favorable cases x =93
Q: A random sample of n = 246 people who live in a city were selected and 76 identified as a "dog…
A: We have given that, X1 = 76 , N1 = 246 and X2 = 69, N2 = 115 Then, We will find the 90% confidence…
Q: If n=550 and p' (p-prime) = 0.62, construct a 99% confidence interval. Give your answers to three…
A: Given data: If n=550 and p' (p-prime) = 0.62, confidence level= 99%
Q: A survey by the society of Human Resource Management asked 350 job seekers why employees change jobs…
A: It is given that the sample size (n) is 350 and (x) is 126.
Step by step
Solved in 2 steps
- Construct a confidence interval for p₁ - P2₂ at the given level of confidence. x₁ = 30, n₁ = 228, x₂ = 39, n₂ = 294, 95% confidence The researchers are % confident the difference between the two population proportions, p₁ – P2, is between (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.) andwhich one is right?Construct a 96% confidence interval if x=75 and n=200. Round your answers to 3 decimal places.
- Adult mountain lions 18 months and older captured and released and the average weight was 68, 104, 128, 122, 60, 64. Given the confidence intervals are 65.73, 116.27. What does the confidence interval mean in the context of this problemA statistical study is made to compare the % of smokers in small rural towns to the overall smoking rate of the US. Of 1500 asults selected randomly from small towns it is found that 285 of them smoke. With a cofidence interval of (017, 0.21). The CDC reports that 15.1% of all American adults smoke. Does the confidence interval suggest that smoking rate is higher in small towns than in the country overall?A random sample of ni = 270 people who live in a city were selected and 99 identified as a "dog person." A random sample of n2 = 108 people who live in a rural area were selected and 51 identified as a "dog person." Find the %3D 98% confidence interval for the difference in the proportion of people that live in a city who identify as a "dog person" and the proportion of people that live in a rural area who identify as a "dog person." Round answers to to 4 decimal places. < pi – P2 < -
- Researchers are studying whether the proportion of homeschooled children in district 1 (considered 1) is less than the proportion of homeschooled children in neighboring district 2 (considered as 2). To test the theory info was gathered: district 1 had 600 students of which 90 were homeschooled. District 2 had 550 students of which 99 were homeschooled. What is the 95% confidence interval for the difference proportion between district 1 and 2? A. (-0.086, 0.026) B. (0.143, 0.217) C. (0.113, 0.187)A recent survey of two countries in South America reports on data about foreign-born citizens. Of 500 randomly selected people in Peru, 125 reported as being born in another country; meanwhile, 75 of 800 randonly selected Argentinians reported as being foreign-born. Use this information to create a 95% confidence interval for the true difference in proportions of foreign born citizens between Peru and Argentina.Give a 95% confidence interval, for ₁-2 given the following information. n₁ = 55, ₁ = 2.5, 8₁ = 0.6 = 60, T2 2.38, 82 N2 = 0.8 = Hint - + Use Technology. Rounded to 2 decimal places.
- A random sample of n1n1 = 275 people who live in a city were selected and 103 identified as a "dog person." A random sample of n2n2 = 101 people who live in a rural area were selected and 55 identified as a "dog person." Find the 98% confidence interval for the difference in the proportion of people that live in a city who identify as a "dog person" and the proportion of people that live in a rural area who identify as a "dog person." Round answers to to 4 decimal places. < p1 - p2 <Many teens have posted profiles on sites such as Facebook. A sample survey asked random samples of teens with online profile if they included false information in their profiles. Of 170 younger teens (ages 12 to 17) polled, 117 said "Yes." Of 317 older teens (ages 15 to 17) polled, 152 said "Yes." A 95% confidence interval for py - Po = the true difference in the proportion of younger teens and older teens who include false information in their profile is 0.12 to 0.297. Does the confidence interval give convincing evidence of a difference in the true proportions of younger and older teens who include false information in their profiles? Explain your answer. O Even though this confidence interval does not include 0, this might not occur again in different samples. There is not enough evidence to make a conclusion regarding the true difference in the proportion of younger teens and older teens who include false information on their profiles. No. We are 95% confident that the interval…Construct a confidence interval for p1- P2 at the given level of confidence. x1 = 26, n1 = 270, x2 = 38, n2 = 296, 99% confidence The researchers are 1% confident the difference between the two population proportions, p1 - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)
