A random sample of n1n1  = 236 people who live in a city were selected and 90 identified as a "dog person." A random sample of n2n2  = 103 people who live in a rural area were selected and 56 identified as a "dog person." Find the 99% 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−p2p1-p2 <_____________

Q: A random sample of 120 adults showed that 42 are already fully vaccinated. Give a 95% confidence…

A:

Q: In Cleveland, a random sample of 73 mail carriers showed that 10 had been bitten by an animal during…

A: Given, n1 = 73 x1 = 10 n2 = 80 x2 = 16 confidence level = 1 - α = 0.95 α = 0.05α2 = 0.025   To find,…

Q: . A phase three clinical trial for a new medication proposed to treat depression has 1237…

A:

Q: A large private university and a large public university selected random sample of incoming freshman…

A: Given:  p1 is the proportion of all entering freshmen at the private university who graduated in the…

Q: In a survey of 650 randomly selected U.S. males ages 18-64, 396 say they have gone to the dentist in…

A: Given,n=650x=396p^=xnp^=396650=0.6091-p^=1-0.609=0.391α=1-0.90=0.1α2=0.05Z0.05=1.645     (from…

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: In Cleveland, a random sample of 74 mail carriers showed that 12 had been bitten by an animal during…

A:

Q: A recent study was conducted in which a random sample of men and a random sample of women were…

A: Given:  Confidence Interval = (0.133,0.207) = (13.3%, 20.7%)

Q: In a random sample of 100 men, 96 said that they had less leisure time today than they had 10 years…

A:

Q: In a randomly selected sample of 400 registered voters in a community, 200 individuals say that they…

A: A sample of 400 registered voters in a community were randomly selected in which 200 individuals say…

Q: In a random sample of 500 people eating lunchbat a cafeteria on various fridays, it was found that…

A: Given X=160 n=500 P=X/n

Q: A New York Times/CBS News Poll asked a random sample of U.S. adults the question “Do you favor an…

A: From the provided information, Confidence level = 95% Confidence limit = (0.63, 0.69)

Q: Obtain a 95% confidence interval for the difference between the proportion of males and females who…

A: Given data 25% of a random sample of males plan to vote yes of a random sample of 60 32% of a random…

Q: The Graduate Schools take a random sample of recent MS graduates (n=135) and finds that 12 of these…

A: Givenn=135x=12confidence interval = 90%p^=xn=12135=0.0889α=1-0.90=0.10α2=0.05zc=zα2=z0.05=1.6449…

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 random sample, 136 of 400 people given a flu vaccine experienced some discomfort. Construct a…

A: Given information n = 400 People No of people given vaccine x = 136

Q: In a random sample of 810 medical professionals, 81 prefers to work in the evening shift.  The width…

A: Given,n=810x=81p^=xnp^=81810=0.11-p^=1-0.1=0.9α=1-0.95=0.05α2=0.025Z0.025=1.96

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: Independent random samples of 50 boys and 50 girls in a school were asked if they are depressed for…

A:

Q: A recent survey showed that among 650 randomly selected subjects who completed 4 years of college,…

A:

Q: A sample of 3048 randomly chosen people found that 341 of them were left-handed. Construct a 99%…

A: Sample proportion=p^=xn=3413048Critical value for 99% confidence interval is=z=2.576n=sample…

Q: Of 91 adults selected randomly from one town, 60 have health insurance. Find a 90% confidence…

A: From the provided information, Sample size (n) = 91 Out of which 60 have health insurance. Sample…

Q: When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted…

A: Find z-critical value:…

Q: A survey found that 39 of 66 people who don't drink coffee often have trouble sleeping and 44 of 88…

A: Solution: Let X1 be the number of noncoffee drinkers who have trouble sleeping, n1 be the sample…

Q: 7 out of 70 students said they were comfortable with “working in a workplace with a lot of…

A: Given that  57 out of 70 students said they were comfortable with “working in a workplace with a lot…

Q: A medical study showed that 57 of 300 persons failed to recover from a given disease. Find a 95%…

A: Given data n=300 x=57 confidence interval is 95%

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: A national opinion poll found that 44% of all American adults agree that parents should be given…

A:

Q: A study at a community college shows that, of the 97 randomly selected first year students, 27…

A:

Q: In a random sample of190people,153said that they watched educational television. Find…

A: Solution: Let X be the number of people who watched educational television and n be the sample…

Q: A 2019 poll of 1234 randomly selected teenagers asked the question, "do you write a thank you note…

A: Given that  Sample size n =1234 Population proportion p=0.65

Q: In a sample of 150 men, 132 said that they had less leisure time today than they had 10 years ago.…

A: Given that, x1=132  n1=150 p1^=x1n1=132150=0.88p2^=x2n2=236250=0.944Confidence of level…

Q: A 99% confidence interval for the mean population height of male college freshman is calculated from…

A: Consider the equation

Q: Find a 99% confidence interval for the mean of weights of Siamese cats if the population standard…

A: We have given that Sample mean (x̄) = 11.8, population standard deviation (σ) = 2.1 and sample size…

Q: A survey of 503 women shoppers found that 46% of them shop on impulse. What is the 99% confidence…

A: Given : Sample Size, n = 503 confidence level,c=0.99

Q: In a random sample of 200 females and 100 males who watched a certain television program, 94 females…

A: For Females : Out of 200 females , X = 94 females indicated they like it Sample proportion 1 =…

Q: In a random sample of 195 people,149 said that they watched educational television. Find the 95%…

A:

Q: A survey of 95 families showed that 40 of the families owned at least one tv. a. Find the 90%…

A: Number of families in a sample n =95 Let X be the number of families owned at least one tv = 40 p =…

Q: A phase three clinical trial for a new medication proposed to treat depression has 1191…

A:

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: 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: When you calculated confidence intervals using a z-test for one sample proportion, what kinds of…

A: Given Information:- Confidence intervals using a z-test for one sample proportion.

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

A:

Q: the variance in waiting times(in minutes) of 10 attendees at bethel woods, where attendees enter a…

A: We need to construct the 95%95\% confidence interval for the population variance. We have been…

Q: A 95% confidence interval for the mean price of textbooks at UCLA in the spring quarter of 2010,…

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: In a simple random sample of 1200 Americans age 20 and over, 138 of them were found to have Type I…

A: In a simple random sample of 1200 Americans age 20 and over, 138 of them were found to have Type I…

Q: the number of smokers in a sample of 40 students selected from university A is 14 and the number of…

A: Given data,For University An1=40x1=14p1=1440=0.35For University Bx2=84n2=380p2=84380=0.22Construct…

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-…

Q: A phase three clinical trial for a new medication proposed to treat depression has 1237…

A: It is given that sample size (n) is 1,237 and x is 650.

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.