Of 54 bank customers depositing a check, 17 received some cash back. (a) Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (Round your answers to 4 decimal places.)       The 90% confidence interval is from   to

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A: Given that sample size is n = 190 And the sample proportion is 70% = 0.7 At 90% confidence level,…

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A: Given that there are 460 junior college students and 100 said they have a passport. That is, n=460…

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A: Given: n = 100 99% Confidence interval = (0.48 to 0.62) Formula Used: Confidence interval = p^ ±…

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Q: 11) In a Gallup poll, 1011 adults were asked if they consume alcoholic beverages and 64% of them…

A: (11) Obtain the 90% confidence interval estimate of the proportion of all adults who consume…

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A: X = 90 N = 170

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A: Given that  Sample size n =350 Favorable cases x =287 Sample proportion p^=x/n  =287/350 =0.82

Q: 1. The Hartford Insurance Company wants to estimate the percentage of drivers who change tapes or…

A: Please see the attachment..

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Q: In a recent polI, 200 people were asked if they liked dogs, and 15% said they did. Find the margin…

A: From the provided information, Sample size (n) = 200 15% people said they like dogs that is p̂ =…

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A: We have to find given ci.

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Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite…

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Q: Of 41 customers depositing a check, 20 received some cash.  a. Construct a 90 percent confidence…

A: Given,n=41x=20p^=xnp^=2041=0.48781-p^=1-0.4878=0.5122α=1-0.90=0.1α2=0.05Z0.05=1.645   (from Z-table)

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

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Q: Find the 98% confidence interval for the true difference in population proportions, pˆ A − pˆ B.

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A: From the provided information, Sample size (n) = 500 Sample proportion (p̂) = 0.11

Q: Give a 95​% confidence interval for the true proportion of those from their entire mailing list who…

A: Given,Sample size (n)=1,00,000No. of donotions recived (r)=4887Proportion P^=xr=48871,00,000=0.04887…

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Q: confidence interval for the true proportion

A: We have to find out the confidence interval for the true proportion.

Q: Flagstaff found 470 NAU students who drink coffee daily. Find a 95% confidence interval for the true…

A: Given