In a sample of 240 adults, 226 had children. Construct a 90% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three places |

Q: In a sample of 520 adults, 458 had children. Construct a 90% confidence interval for the true…

A: Solution-: Given: We find 90% C.I. for the true population proportion of adults with children

Q: A survey of 540 depressed shoppers found at 32% of them shop on impulse. What is the 99% confidence…

A: Given : Sample Size, n = 540 confidence level,c=0.99 Significance level, α…

Q: If n = 480 and p (p-hat) = 0.95, construct a 99% confidence interval. Give your answers to three…

A: We solve first mean confidence interval.

Q: If n=340 and p (p-hat) = 0.58, construct a 95% confidence interval. Give your answers to three…

A: From the provided information, Sample size (n) = 340 Sample proportion (p̂) = 0.58 Confidence level…

Q: In another pre-election poll, a pollster finds that 438 out of 600 people polled favor, Smith.…

A: Given, X = 438 N = 600 The sample proportion is given by:

Q: In a sample of 250 adults, 175 had children. Construct a 90% confidence interval for the true…

A: We have given that,  Sample size (n) = 250 and favorable cases (X) = 175  Then,  We will find 90%…

Q: In a survey of randomly selected 1040 adults from the US, 83 said they believed that the food they…

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Q: In a simple random sample of 300 college students, 35.0 percent stated that they intended to pursue…

A: The random variable X follows normal distribution. We have to construct 95% confidence interval.…

Q: In a recent poll, 370 people were asked if they liked dogs, and 69% said they did. Find the Margin…

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Q: If n = 200 and p (p-hat) = 0.15, construct a 99% confidence interval. Give your answers to three…

A: Given: n= 200 At 99.0 % confidence level , z score= 2.576 Need to find confidence interval for…

Q: A poll asked 1011 American adults if they believe there was a conspiracy in the assassination of…

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Q: If n = 560 and X = 448, construct a 95% confidence interval for the population proportion, p. %3D…

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Q: In a recent poll, 410 people were asked if they liked dogs, and 24% said they did. Find the Margin…

A: We have to find margin of error.

Q: The confidence interval at the 95% level of confidence for the true population proportion was…

A: The 95% confidence interval is CI95=(0.665,0.835). We know, that as the level of confidence…

Q: A magazine reports survey results of 600 randomly selected adults bystating that: “65% of those…

A: From the given information, Sample size (n) = 600 Probability that favor gun control (p) =0.65…

Q: In a recent poll, 240 people were asked if they liked dogs, and 46% said they did. Find the Margin…

A: Given that, Critical values: By using the standard normal table of Z, the critical value at 95%…

Q: If n=280 and ˆpp^ (p-hat) = 0.39, construct a 95% confidence interval. Give your answers to three…

A: The given sample size, n=280. The sample proportion, p^=0.39 The level of confidence is 0.95. Need…

Q: A research found that 70% of 1500 randomly selected U.S. adults believe in global warming. Find the…

A: Solution: From the given information, p-hat=0.70 and n=1500.

Q: If n = 600 and p (p-hat) = 0.75, construct a 95% confidence interval. Give your answers to three…

A: Givenp^=0.75n=600Confidence interval(c)=95%α=1-0.95=0.05α2=0.025Critical value(zc)=zα2=z0.025=1.96…

Q: are vegetarian is 0.078. Find the margin of error for a 99% confidence interval.

A: Here given, A researcher wishes to estimate the proportion of adults in the city of Hawalli who are…

Q: A health insurance firm wants to estimate the proportion of a population that would receive the flu…

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Q: In a sample of 240 adults, 180 had children. Construct a 95% confidence interval for the true…

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Q: If n = 560 and ˆpp^ (p-hat) = 0.25, construct a 99% confidence interval.

A: Calculations: x=140 and N= 560

Q: In a recent poll, 260 people were asked if they liked dogs, and 80% said they did. Find the Margin…

A: Given:

Q: In a sample of 530 adults, 445 had children. Construct a 99% confidence interval for the true…

A: We have given that,  Favorable cases (X) = 445 and sample size (n)=530 Then,  We will find the 99%…

Q: In a survery of 1118 American adults, 626 said they drink  coffee over tea. What would be the 95%…

A: It is given that, the number of American adults said that they drink coffee over tea is 626 out of…

Q: In a survey of 2298 ​adults, 709 say they believe in UFOs. Construct a 95% confidence interval for…

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Q: If n=110 and p (p-hat) = 0.66, construct a 95% confidence interval. Give your answers to two…

A: The confidence interval for a sample proportion at 95% can be calculated using the formula,…

Q: In a recent survey of 500 teenagers, 18.6% indicated that they had eaten junk food while watching TV…

A: Given Data: p^=0.186n=500

Q: If n = 320 and ˆpp^ (p-hat) = 0.55, construct a 95% confidence interval. Give your answers to three…

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Q: Suppose we know that a confidence interval for a population proportion is (0.572, 0.662), with a…

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Q: If n = 500 and ˆpp^ (p-hat) = 0.2, construct a 99% confidence interval.

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Q: At a traffic stop on a Saturday night 30% of 40 drivers were intoxicated. What is the 99% confidence…

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Q: Of 102 randomly selected adults, 42 were found to have high blood pressure. A 90% confidence…

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Q: If n = 100 and ˆpp^ (p-hat) = 0.9, construct a 95% confidence interval. Give your answers to three…

A: Sample size, n = 100 95% confidence level p^ = 0.9

Q: In a sample of 480 adults, 384 had children. Construct a 99% confidence interval for the true…

A: The random variable adults with children follow normal distribution. We have to construct 99%…

Q: If n = 480 and ˆpp^ (p-hat) = 0.35, construct a 95% confidence interval. Give your answers to three…

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Q: In a preelection poll, a pollster finds that 442 out of 650 people polled favor Smith. Construct the…

A: We need to construct the 95% confidence interval for the population proportion. We have given the…

Q: If n=190 and ˆpp^ (p-hat) = 0.95, construct a 99% confidence interval. Give your answers to three…

A: Obtain the 99% confidence level estimate of the population proportion. The 99% confidence level…

Q: If n=210 and ˆpp^ (p-hat) = 0.6, construct a 95% confidence interval. Give your answers to three…

A: Obtain the 95% confidence interval for the true population proportion. The 95% confidence interval…

Q: If n = 460 and ˆpp^ (p-hat) = 0.4, construct a 95% confidence interval in excel. Give your answers…

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Q: If n=520 and p (p-hat) = 0.8, construct a 90% confidence interval. Give your answers to three…

A: Find z-critical value:…

Q: A survey of 240 teachers found that two-thirds of those surveyed do not live in Sydney. Can you…

A: The confidence interval is the combined value of sample statistic, the critical value and the…

Q: Suppose you compute a 93% confidence interval. What will happen to the confidence interval if you…

A: Increasing the confidence level increases the margin of error. This will increase the width or range…

Q: If n=430 and (p-hat) = 0.67, construct a 90% confidence interval. Give your answers to three…

A: We have given that,  Sample size (n) = 430 and sample proportion or point estimate (p̂) = 0.67…

Q: If n=130 and ˆpp^ (p-hat) = 0.1, construct a 99% confidence interval. Give your answers to three…

A: Given, Sample size, n = 130  Sample proportion, p^ = 0.1 Level of significance = 1 - 0.99 = 0.01…

Q: Suppose that based on a random sample, a 95% confidence interval for the mean hours slept (per day)…

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Q: In a sample of 300 adults, 198 had children. Construct a 90% confidence interval for the true…

A: Given Data: p^=xn=198300=0.66 n=300     z-value corresponding to 90% CI=1.645

Q: In a recent poll, 430 people were asked if they liked dogs, and 94% said they did. Find the Margin…

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Q: If n=230 and p (p-hat) = 0.61, construct a 95% confidence interval. Give your answers to three…

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