A random sample of n1n1 = 228 people who live in a city were selected and 85 identified as a republican. A random sample of n2n2 = 101 people who live in a rural area were selected and 54 identified as a republican. Find the 95% confidence interval for the difference in the proportion of people that live in a city who identify as a republican and the proportion of people that live in a rural area who identify as a republican. Round answers to 2 decimal places, use confidence interval notation : (___ , ___)

Q: An article in a journal reports that​ 31% of American fathers take no responsibility for child care.…

A: Given, Population proportion P=31%=0.31 Sample size of fathers n=235 Number o fathers who did not…

Q: In a survey funded by the UW school of medicine, 750 of 1,000 adult Seattle residents said they did…

A: Given X1=750 X1=893 n1=1000 n2=1123

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A: Note: It is our understanding that it is only required to identify the population parameter, and…

Q: A survey found that 73% of a random sample of 8344 American adults approved of cloning endangering…

A:

Q: Physicians at a clinic gave what they thought were drugs to 910910 patients. Although the doctors…

A: Null Hypothesis H0: p=0.47Alt. Hypothesis H1: p>0.47p_cap=0.52p_not=0.47n=910

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: LONstruct the 90% confidence interval for the difference P₁ P₂ when x₁ = 45, n₁ = 85, x₂ = 20, and…

A: We have given that,  X1 = 45, n1 = 85 and X2 = 20, n2 = 65 Then,  We will find the 90% confidence…

Q: A  95% confidence interval for the  proportion of voters who say "they want change" is computed and…

A: From the provided information, Confidence level = 95% Confidence interval for the proportion is…

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: A poll of 1,600 voters in one district showed that 56​% of them would favor stricter gun control…

A: In this case, the confidence level is 95%. The 95% confidence interval for the population proportion…

Q: A  95% confidence interval for the  proportion of voters who say "they want change" is computed and…

A: For the population proportion, the confidence interval can be computed using the formulae: C.I=p⏞±E…

Q: A survey of 425 randomly selected students at one university found that 300 students think they…

A:

Q: truct the 80% confidence interval for the difference p₁-P2 when x₁ = 40, n₁ = 80, x₂=20, and n₂ =…

A: For population 1:The number of successes is .The sample size is .For population 2:The number of…

Q: Physicians at a clinic gave what they thought were drugs to 900900 patients. Although the doctors…

A: Let p be the population proportion of patients reported an improved condition. The hypothesis that…

Q: A recent college graduate is trying to decide whether or not pursuing a Master's degree is worth it.…

A: We have to test that if adults with masters degree earn more than adults with bachelor's degree…

Q: A random sample of 380 married couples found that 296 had two or more personality preferences in…

A: Let p1 be the population proportion of all married couples who have two or more personality…

Q: Many high school students take the AP tests in different subject areas. In one year, of the 144,241…

A: given data  n1 = 144241   x1 = 84000p^1 = x1n1 = 84000144241 = 0.5824 n2 = 211725    x2 = 122644 p^2…

Q: The q researcher who was working on the study from the data set labeled "Type of Bike 1" decided…

A: Introduction: It is of interest to test whether the mean time to ride to Place M from a location 3…

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

A:

Q: In a sample of 137 leopards selected randomly from one preserve, it is found that 7 of them have…

A: H0 : p = 0.13 H1: p ≠ 0.13

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: A report statesb that 44% of home owners had a vegetable garden. how large a sample is needed to…

A: Answer: Using the given data, A report stated that 44% of home owners had a vegetable garden, P =…

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 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: Choose the appropriate statistical probability notation for the sentence. If a person does not carry…

A: The conditional probability of P(A/B) can be inferred as, the likelihood of event A, whereas event B…

Q: A political candidate feels that she performed particularly well in the most recent debate against…

A: We have given that 95% confidence ( -0.014, 0.064) We have to compute margin of error

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: A study of 156 oak trees found that 8.5% had a bark beetle infestation. Find a 95%…

A:

Q: In a sample of 85 statistics students, 41 said that finding confidence intervals for population…

A: It is given that x is 41 and sample size (n) is 85. The confidence level is 0.99.

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 firm randomly samples 100 workers at its New York plant and finds that 32% of the workers say that…

A: The proportion of workers who say that they buy the firm’s product is 0.32.

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: In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the…

A: Solution: Let X be the hippocampal volume. From the given information, x-bar = 8.09, s = 0.7 and n =…

Q: In a science fair​ project, Emily conducted an experiment in which she tested professional touch…

A: Given data, n=330 x=155 sample proportion p=x/n =155/330=0.47   z-value at 95% confidence is zc=1.96

Q: A hypothesis test was performed to decide whether the mean number of words spoken per day by men is…

A: From the provided information, Level of significance (α) = 0.05 The p value = 0.02

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 Elisa test for the human immunodeficiency virus (HIV) that causes AIDS has been used in the…

A: Conditional probability is defined as the likelihood of an event or outcome occurring, based on the…