Tonya wants to estimate what proportion of her school’s seniors plan to attend the prom. She interviews an SRS of 50 of the 750 seniors in her school and finds that 36 plan to go to the prom.a) Find the Margin of Error and Construction 95% Confidence Interval.b)How large of a sample is required to obtain a margin of error of 0.03 or 3%?

Q: If n=470 andp (p-hat) =0.69, find the margin of error at a 95% confidence level Give your answer to…

A: If the number of possible observations from the total sample size is calculated using the proportion…

Q: If n=500 and p^ (p-hat) =0.13, find the margin of error at a 90% confidence level Give your answer…

A: Find z-critical value: For the two-tail test, Area on each tail. Area to the left of the normal…

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A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: If n=31, ¯xx¯(x-bar)=38, and s=4, find the margin of error at a 95% confidence level Give your…

A: Here, the population standard deviation is unknown. Hence, t - distribution is appropriate to use as…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

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Q: If n=23, ¯x(x-bar)=47, and s=2, find the margin of error at a 90% confidence level Give your answer…

A:

Q: A collage professor would like to estimate the proportion of students who pull an *all-nighter,"…

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

Q: If n=550 and ˆpp^ (p-hat) =0.25, find the margin of error at a 99% confidence level Give your…

A: The margin of error = The margin of error (ME) expresses to the maximum expected differences between…

Q: If n = 590 and ˆp=0.48, find the margin of error at a 99% confidence level E=

A: If n = 590 and ˆp=0.48, find the margin of error at a 99% confidence level

Q: If n=20, ¯xx¯(x-bar)=44, and s=9, find the margin of error at a 98% confidence level Give your…

A: In the question, n=20 and s=9 are given and the margin of error at a 98% confidence level is asked…

Q: If n=26, ¯xx¯(x-bar)=43, and s=9, find the margin of error at a 98% confidence level Give your…

A:

Q: If n=11, ¯x(x-bar)=35, and s=8, find the margin of error at a 90% confidence level Give your answer…

A: Given that,  n=11, x-bar=35, and s=8, Confidence level is 90%

Q: If n=330 and p (p-hat) =0.92, find the margin of error at a 99% confidence level Give your answer to…

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Q: If n=24, x(x-bar)=33, and s=3, find the margin of error at a 90% confidence level Give your answer…

A: It is given that standard deviation (s) is 3 and sample size (n) is 24.

Q: If n=22, ¯xx¯(x-bar)=39, and s=6, find the margin of error at a 98% confidence level Give your…

A:

Q: If n=12, ¯x(x-bar)=35, and s=2, find the margin of error at a 98% confidence level Give your…

A: Given: n=12 ¯x(x-bar)=35 s=2

Q: If n=22, ¯xx¯(x-bar)=45, and s=9, find the margin of error at a 95% confidence level Give your…

A:

Q: In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: According to the given information in this question We need to find the 90% confidence interval of…

Q: If n=11, ¯xx¯(x-bar)=32, and s=9, find the margin of error at a 98% confidence level

A:

Q: If n=23, ¯x (x-bar)=38, and s=5, find the margin of error at a 99% confidence level

A: The degrees of freedom is obtained as follows:

Q: If n=14, ¯xx¯(x-bar)=44, and s=3, find the margin of error at a 98% confidence level Give your…

A: Margin of error = The margin of error (MOE) expresses to the maximum expected differences between…

Q: If n=11, ¯x(x-bar)=43, and s=10, find the margin of error at a 99% confidence level Give your…

A: Given that  n=11, ¯x=43 and s=10,

Q: 2. A researcher wants to estimate the daily expenses of college students. He wants a 95% confidence…

A: We have given that,  Population standard deviation (σ) = 99.50, margin of error (E) = 45 and…

Q: If n=13, ¯x(x-bar)=41, and s=5, find the margin of error at a 80% confidence level Give your answer…

A:

Q: If n=130 and ôp (p-hat) =0.93, find the margin of error at a 99% confidence level Give your answer…

A: Here, the margin of error for proportion p^ is to be calculated. The formula is given by, z*p^1-p^n,…

Q: If n=12, ¯xx¯(x-bar)=44, and s=5, find the margin of error at a 99% confidence level

A: Given: margin of error for a 99% confidence interval. n=12 x¯(x-bar)=44 s=5

Q: If n=10, ¯x(x-bar)=38, and s=5, find the margin of error at a 80% confidence level Give your answer…

A:

Q: If n=17, ¯xx¯(x-bar)=47, and s=4, find the margin of error at a 80% confidence levelGive your answer…

A: Given data Sample size (n) = 17 x̅ = sample mean = 47 s = sample standard deviation = 4 Confidence…

Q: If n=570 and ˆpp^ (p-hat) =0.8, find the margin of error at a 95% confidence level

A: given that, n = 570 p^=0.8 confidence level = 95%

Q: f n=300 and ˆpp^ (p-hat) =0.18, find the margin of error at a 99% confidence level Give your answer…

A:

Q: If n=24, ¯xx¯ (x-bar)=50, and s=9, find the margin of error at a 95% confidence level (use at least…

A: Given,n=24x¯=50s=9degrees of freedom(df)=n-1df=24-1=23α=1-0.95=0.05α2=0.025t0.025(23)=2.069…

Q: If n=490 and ˆpp^ (p-hat) =0.46, find the margin of error at a 99% confidence level.Give your answer…

A:

Q: If n=11, ¯xx¯(x-bar)=35, and s=8, find the margin of error at a 90% confidence level. Answer to two…

A: Margin of error = t critical * Standard error where    t critical is the value of t for 90%, two…

Q: If n=25, 7(x-bar)=48, and s=4, find the margin of error at a 80% confidence level

A: The sample size is 25, sample mean is 48, and sample standard deviation is 4. The degrees of freedom…

Q: If n=32, ¯xx¯ (x-bar)=49, and s=4, find the margin of error at a 95% confidence level (use at least…

A:

Q: If n=12, ¯xx¯(x-bar)=48, and s=6, find the margin of error at a 98% confidence level

A: From the provided information, Sample size (n) = 12 Sample mean (x̄) = 48 Standard deviation (s) = 6…

Q: 19) A political survey had a margin of error of 4.25%. If the surveyor used a 90% confidence level…

A: Assume p-hat as 0.5, since no preliminary estimate is available.

Q: (c) If the confidence levels were 98% rather than 80%, would the margin of error be larger or…

A: The confidence levels are 98% and 80%.

Q: If n=380 and p (p-hat) =0.49, find the margin of error at a 99% confidence level Give your answer to…

A: Answer - If n = 380,   P^ = 0.49                  99% confidence interval         ⇒ α =1 - 0.99 =…

Q: A member of the Lottery Commission requests a 90% confidence interval estimate but with a smaller…

A: The margin of error depends on the three factors: Level of confidence: The margin of error…

Q: 3. Michael wants to make a confidence interval estimate for the proportion of community members in…

A:

Q: If n=13, x(x-bar)=31, and s=4, find the margin of error at a 95% confidence level   Give your…

A: n = 13 Mean = 31 Sample standard deviation = 4 95% confidence level

Q: If n=10, ¯xx¯(x-bar)=44, and s=8, find the margin of error at a 80% confidence level

A:

Q: If n=12, x¯(x-bar)=47, and s=3, find the margin of error at a 80% confidence level

A: Margin of error (E): The margin of error for sample mean is given by,

Q: If n=16, ¯xx¯(x-bar)=45, and s=7, find the margin of error at a 95% confidence level Give your…

A:

Q: If n=17, (x-bar)=44, and s=8, find the margin of error at a 95% confidence level

A: The sample mean is 44 and standard deviation is 8.

Q: If n=350 and p (p-hat) =0.28, find the margin of error at a 99% confidence level Give your answer to…

A: n = 350p^ = 0.2899% confidence level

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given dataError = 2.5% = 0.025Confidence level = 0.995Significance level = α=1-0.995=0.005