A magazine provided results from a poll of 2000 adults who were asked to identify their favorite pie. Among the 2000 respondents, 11% chose chocolate pie, and the margin of error was given as +5 percentage points. What values do p, q, n, E, and p represent? If the confidence level is 99%, what is the value of a? The value of p is the sample proportion. The value of q is found from evaluating 1 - p. The value of n is the sample size. The value of E is the margin of error. The value of p is the population proportion. If the confidence level is 99%, what is the value of a? α (Type an integer or a decimal. Do not round.)

Q: 7. (Sec. 7.2) In a survey of 2004 American adults, 501 of them said that they believed in astrology…

A: Introduction:The 100 (1 – α) % confidence interval for the population proportion, π is: (p – (zα/2­)…

Q: 1. Determine the critical value (z*) you would use to create a 94% confidence interval.

A:

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A: Given , n = 300 ,  x = 189

Q: Confidence intervals can only be computed for the mean?

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A:

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A: Given information Total adults (n) = 400 No of adults having kids(x) =44

Q: Translate the statement into a confidence interval. Approximate the level of confidence. In a survey…

A:

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Q: If n = 160 and p (p-hat) = 0.85, construct a 95% confidence interval. Give your answers to three…

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Q: If n = 320 and p (p-hat) = 0.7, construct a 90% confidence interval. Give your answers to three…

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Q: All other terms equal, what happens to the width of a confidence interval for μ as n increases? O…

A: The question is about confidence interval.Introduction :1 ) A confidence interval is mainly depends…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Given that  n = 600 , X = 162

Q: A poll of 1785 U.S. adults found that 900 U.S. adults, or 50.42% regularly used Facebook as a news…

A: Given that: Sample proportion, p^=0.5042 sample size (n) =900

Q: Use paired t-interval procedure to determine a 90% confidence interval for the difference between…

A: The data is (X, Y) = (49.3, 49), (43.2, 42), (50.4, 50), (36.3, 37), (52.3, 50)

Q: The confidence interval was (22, 26) What was the point estimate? What was the margin of error?

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Q: A recent survey of 120 individuals revealed that 50 thought they were worse off financially than a…

A: Given,n=120x=50α=1-0.90=0.1α2=0.05Z0.05=1.645

Q: lease show step by step work In another pre-election poll, a pollster finds that 372 out of 600…

A: Given data, n=600 x=372 p=x/n =0.62 z-value at 95% confidence is Zc=1.96

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Q: Express the confidence interval 36.4 % ± 6.2 % in interval form. Express the answer in decimal…

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Q: 1. For each of the following confidence intervals for B,, (i) determine whether there is a linear…

A:

Q: In a survey of 3361 adults in a country, 44% believe the economy is getting better. Three weeks…

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Q: The National Center for Education Statistics reported that 47% of college students work to pay for…

A: Given :-   P = 47% =0.47 P=0.47 n=450   Formula :-   confidence interval =P-zαP1-Pn   ,…

Q: What happens to the spread of an interval if you increase the confidence level from 90% to 99%?

A:

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Givenn=600x=276p^=xn=276600=0.46confidence interval = 95%

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A: Given data,x=3.4σ=2.1n=32z-value at 90% confidence is Zc=1.645

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.