Construct a​ 95% confidence interval estimate of the percentage of adults in the country who do not use the Internet. enter your response here​%

Q: A study of 420,054 cell phone users found that 132 of them developed cancer of the brain or nervous…

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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 survey of 120 female freshmen showed that 9 did not wish to work after marriage.  Find the 99%…

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Q: A random sample of 5006 adults in a country includes 755 who do not use the Internet. Construct a…

A: Formula :

Q: Out of 400 people sampled, 32 had kids. Based on this, construct a 95% confidence interval for the…

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

Q: A bank randomly selected 200 checking-account customers and found that 110 of them also had savings…

A: Given that A bank randomly selected 200 checking-account customers and found that 110 of them also…

Q: confidence interval for the proportion of unemployed adults who have been unemployed for more than…

A: Here given  In a survey of 532 unemployed adults, 225 said that they had been unemployed for more…

Q: Of 127 randomly selected adults, 31 were found to have high blood pressure. Construct a 95%…

A: Given that, Of 127 randomly selected adults, 31 were found to have high blood pressure.  X = 31 N =…

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 survey of 45,535 adults showed that 20,901 were very concerned abut climate change. What is the…

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Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A:

Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A: Given data X = 480 Sample size (n) = 500

Q: country includes 754 who do not use the Internet. Construct a 95% confidence interval estimate of…

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Q: Among 3000 adults surveyed ages 57 to 85 years, it was found that 81.8% of them used one or more…

A:

Q: In a survey of 2896 adults, 1441 say they have started paying bills online in the last year.…

A: Given data X=1441 n=2896

Q: 67% out of 150 pupils from school A passed an exam; 62% of 120 pupils at school B passed. Estimate…

A: Given : n1 = 150 n2 = 120 confidence level,c=0.9

Q: A random sample of 5010 adults in a country includes 760 who do not use the Internet. Construct a…

A: Givensample size(n)=5010x=760sample proportion(p^)=xn=7605010≅0.1517Confidence level=95%

Q: A survey of 45,535 adults showed that 20,901 were very concerned abut climate change. What is the…

A: It is given asFavourable cases, x = 20901Sample size, n = 45535Confidence level = 99%

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

A:

Q: a survey of 3409 adults, 1445 say they have started paying bills online in the last year.  Construct…

A: The confidence interval = 99%The faovarble cases [x] = 1445The sample size [n] = 3409

Q: perimental treatments or medicines. The sample consisted of 1220 adult Internet users, and…

A: The value of z at 95% confidence level is 1.96, which can be found by using the standard normal…

Q: A random sample of 5008 adults in a country includes 760 who do not use the Internet. Construct a…

A: n=5008x=760

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 sample of 400 homeowners includes 124 that expect their home to increase in value in the next…

A: Margin of error: ME=Zα/2 * √p̂(1-p̂)/n

Q: Out of 54 randomly selected patients of a local hospital who were surveyed, 42 reported that they…

A: Given that, The total patients n are 54 and the total patients who were satisfied x are 42.

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: In a survey of 1008 adults, a polling agency asked, "When you retire, do you think you will have…

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Q: An Internet service provider sampled 540 customers and found that 90 of them experienced an…

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Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 425 green peas…

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Q: A sample of 421 adults showed that 239 of them are connected to the Internet from home.  Construct…

A: From the provided information, Sample size (n) = 421 From which 239 are connected to the Internet…

Q: Stanford University conducted a study of whether running is healthy for men and women over age 50.…

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Q: Suppose a marketing company computed a 96% confidence interval for the true proportion of customers…

A: The objective of the question is to understand the meaning of the given 96% confidence interval for…

Q: Identify the y-score for a 95% confidence interval if the sample size is 15.

A: The confidence level is 0.95.

Q: In a Pew Research poll, 287 out of 522 randomly selected U.S. men were able to identify Egypt when…

A: Given that  X1=287 , X2=233 , n1=522 ,n2=520

Q: A research poll of 1501 adults showed that 1051 of respondents believe in global warming. Find a 98%…

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

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Q: Construct a 95% confidence interval for the population proportion of students who graduate within…

A: The sample size is n = 400 And the number of students who graduate within six years, X = 108 The…

Q: A random survey of 5000 businesses was conducted by Statistics Canada. They reported an average of…

A: