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 survey of 800 women shoppers found that 17% of them shop on impulse what is the 98% confidence…

A: Sol:- To calculate the 98% confidence interval for the proportion of women shoppers who shop on…

Q: From a random sample of 64 high school seniors, the sample mean and standard deviation of the math…

A: The sample size is 64, sample mean is 96, and standard deviation is 16. The degrees of freedom is,…

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

A:

Q: A recent study of 2300 children randomly selected found 21​% of them deficient in vitamin D. ​a)…

A: Find z-critical value:…

Q: A random sarmple of ni = 268 people who live in a city were selected and 120 identified as a "dog…

A: Given  n1=268, X1=120, n2=117, X2=59

Q: A scientist wondered if there was a difference in the average daily intake of dairy products between…

A: Reviewing information, X : Daily intake of dairy products of MenY : Daily intake of dairy products…

Q: A random sample of ni = 233 people who live in a city were selected and 109 identified as a "dog…

A:

Q: Find the 95% confidence interval for the difference in the two population means X1 = 12, s1 = 2.2,…

A: The sample mean of group 1 is The sample standard deviation of group 1 is The sample size of group 1…

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 random sample of n1 = 266 people who live in a city were selected and 73 identified as a "dog…

A: Given that : A random sample of n1  = 266 people who live in a city were selected and 73 identified…

Q: A poll of 827 students at Alpha state college found that 61% of those polled preferred a quarter…

A: It is given that the proportion of the students who preferred a quarter system to a trimester…

Q: A random sample of n1  = 262 people who live in a city were selected and 116 identified as a "dog…

A: We have given that, X1 =116, n1 = 262 And X2 = 64, n2 = 101 Then,  We will find the 98% confidence…

Q: A random sample of n1 = 229 people who live in a city were selected and 105 identified as a "dog…

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: A random sample of 242 elephants who are in a preserve in Kenya were selected and 85 identified as…

A: Obtain the 95% confidence interval for the difference between the proportions The 95% confidence…

Q: Arandom sample of 197 students was asked how many songs were in their digtal music library and what…

A: * SOLUTION :-    from the given information the answer is provided as below ,

Q: A survey of 100 customers showed that 36 of them preferred brand B of a particular product. Give a…

A: p = proportion of people vote for BSample size : n = 100Number of favorable outcomes : x =…

Q: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

Q: A random sample of 5005 adults in a country includes 755 who do not use the Internet. Construct a…

A:

Q: A random sample of n1n1 = 272 people who live in a city were selected and 74 identified as a "dog…

A:

Q: The career center at a large university surveyed a random sample of students who graduated the…

A: First, we need to calculate the proportions of engineering and business majors who were able to find…

Q: A random sample of 274 elephants who are in a preserve in Kenya were selected and 94 identified as…

A: The sample proportions are Critical values: By using the standard normal table of Z, the critical…

Q: A random sample of n₁ = 276 people who live in a city were selected and 112 identified as a "dog…

A: given data n1 = 276  x1 = 112p^1 = x1n1 = 112276 = 0.4058       n2 = 117  x2 = 70p^2 = x2n2 = 70117…

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: college performs a survey of 424 randomly chosen graduates to estimate the proportion of alumni who…

A: We have given that  Sample size n =424 Favorable cases x =361 Sample proportion p^=x/n  =361/424…

Q: in a random sample of 60 students from a very large university, only 25% were able to identify…

A: Given Sample size n=60, sample proportion p^=0.25  Construct 95% CI for population proportion p

Q: A random sample of n₁ = 252 people who live in a city were selected and 74 identified as a "dog…

A: Given: n1 = 252 X1 = 74 n2 = 111 X2 = 66 Confidence level = 99% Formula Used: Confidence interval =…

Q: If the number of smokers in a sample of 40 students selected from university A is 12 and the number…

A:

Q: A random sample of n₁ = 213 people who live in a city were selected and 91 identified as a "dog…

A: n1=213x1=91n2=120x2=67α=1-0.90=0.10

Q: A random sample of n1  = 258 people who live in a city were selected and 74 identified as a "dog…

A: given data  n1 =258    x1 = 74p^1 = x1n1 = 74258 = 0.2868 n2 = 102    x2 = 63 p^2 = x2n2 = 63102 =…

Q: A random sample of n1 = 229 people who live in a city were selected and 92 identified as a "dog…

A: Obtain the 98% confidence interval for the difference in the proportion of people that live in a…

Q: a survey asked a random sample of n= 2752 us adults whether they had visited a public library in the…

A: The number of females said yes (xf) is 726 and the total number of females (nf) is 1423.

Q: An insurance company collects data on seat-belt use among drivers in a country. Of 1100 drivers…

A: Answer:-  Given, Sample size (30-39), n1 = 1100 Sample proportion (30-39), p1 = 0.25 Sample size (55…

Q: In a random survey of 2221 North Americans 689 of them had blood type A+. Construct a 94% Confidence…

A:

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: A study was done to determine whether there is a relationship between snoring and the risk of heart…

A: Given: Consider Snoring to be data set 1 and Risk of heart disease to be data set 2.…

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: In a random sample of 392 people that were tested for the Norcovirus, it was found that 314 did not…

A: The objective of this question is to understand the meaning of the given 97% confidence interval for…

Q: Round answers to to 4 decimal places. pi - p2

A: Given : n1 = 278 x1 = 98 n2 = 109 x2 = 65 confidence level,c=0.9…

Q: A random sample of n₁ = 261 people who live in a city were selected and 107 identified as a "dog…

A: Suppose p1 is the true population proportion of people that live in the city who identify as a “dog…

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.

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

A: Given data,For University An1=40x1=14p1=x1n1 =1440=0.35For University Bn2=380x2=84p2=x2n2…

Q: A random sample of n₁ = 217 people who live in a city were selected and 106 identified as a "dog…

A: n1 = 217 , X1 = 106 , n2 = 114 , X2 = 66 90% confidence interval

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.