An exam consists of 50 multiple-choice questions. Based on how much you studied, for any given question you think you have a probability of ? = 0.7 of getting the correct answer. Consider the sampling distribution of sample proportion of the 50 questions on which you get the correct Find the mean and standard deviation of the sampling distribution of this proportion.

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Q: A sample consisting of 992 men and 523 women was asked various questions pertaining to the nation's…

A: Margin of error (M.E.): The margin of error for proportion p is given by, Since the population…

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A: Given that  Sample size n =51 Sample mean =24.9 Standard deviation =2.7

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A: Hypothesis  Ho: mu=65 vs H1: mu ≠ 65

Q: Only about 16% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: From the provided information, Population proportion (p) = 0.16 Sample size (n) = 335 Out of which…

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A: Given Information: Margin of error = 0.01 Confidence level = 95% p^=0.2 To find sample size n:…

Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: GivenA poll of 500 adults asked to identify .among them 11% choose chocololate pie and the margin of…

Q: According to a research​ institution, the average hotel price in a certain year was ​$97.27. Assume…

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Q: It currently takes users a mean of 35 minutes to install the most popular computer program made by…

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Q: There are 225 participating dogs at the National Dog Show that weigh an average of 5 kilos, with a…

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Q: Suppose that we wanted to estimate the true average number of eggs a queen bee lays with 95%…

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Q: Suppose that we wanted to estimate the true average number of eggs a queen bee lays with 99%…

A:

Q: Suppose a simple random sample of 700 was taken from a large population. The sample had 32%…

A: Note:Hey, since there are multiple sub-parts question posted, we will answer first three sub-parts.…

Q: The average test score on a statistics test was  84.2.   Assume the class had a normal distribution…

A: Solution: Let X be the test score. From the given information, X follows normal distribution with…

Q: A sample consisting of 952 men and 543 women was asked various questions pertaining to the nation's…

A: Given that a sample consisting of 952 men and 543 women was asked various questions pertaining to…

Q: The mean is 137 and the standard deviation is 5.3. find the probability that X is between 134.4 and…

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Q: Let y be a random variable having a normal distribution with a mean equal to 50 and a standard…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Sometimes when you are sick, your forehead feels really warm. You might have fever. How can you find…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Marcos took the EnggMath3 exam decided to guess on a 10-item multiple choice. Each problem has 5…

A: # x be the no of answers correct follow binomial distribution (n=10, p=1/5)  1): then to find…

Q: It currently takes users a mean of 26 minutes to install the most popular computer program made by…

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Q: A person who claims to have ESP says they can correctly guess the outcome of a flipped coin more…

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Q: Please explain how to solve the following:   The Aluminum Association reports that the average…

A: we are suppose to answer three sub parts .

Q: Please answer question 4, thank you. The probability of winning at the board game Monopoly is 32.5%…

A: The probability of winning the board game Monopoly is 32.5% if you move first. The proportion for 10…

Q: Solve the following problem. Show your complete solution. 3. Miss Mathica Kumpleto (MMK), a SHS Math…

A: The process of selecting a sample from a population is called sampling. In sampling a representative…

Q: What type of significance test would you run given the data above? What conditions must be satisfied…

A: Solution: 1)Here we will use 1 sample z test2)data must be from normal distnii sampe is independent…

Q: Suppose multiple samples of size nn are drawn from a population with a mean of 50. The mean is…

A: Population mean =50

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A: It is given that Sample size is n = 22 Sample mean M = 33.9 Sample SD s = 4.1 Levem of significance…

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Q: loaded my die so that the chance of a 1 is 0.1, the chance of a 6 is 0.2, and the chances of the…

A: Use ∑P(x) =1   to find the remaining probability

Q: Suppose you wish to estimate a population mean based on a random sample of n observations, and prior…

A: The population standard deviation is 12.7, the margin of error is 1.6 and probability(or confidence…

Q: Assume the sample standard deviation is s=10, what do you conclude? You fail to reject the null You…

A: Given that  Sample size n =25 Sample mean =87 Population mean =84 Standard deviation s=10

Q: The 2008 General Social Survey asked, “What do you think is the ideal number of children for a…

A: We have given that  Sample size n =678 Sample mean =3.22 Standard deviation =1.99

Q: The website guessmyage.net allows users to submit a photo and then people visiting the site can…

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Q: Suppose that you are preparing to construct a 98% confidence interval for the population mean.  You…

A: Given Data : Sample Size, n = 27 Sample Mean, x̄ = 29.5 standard deviation,…

Q: According to Quantcast analytics of CrossFit.com, 59% of CrossFitters have children. Suppose we take…

A: From the provided information, 59% of Cross Fitters have children that is p = 0.59 Sample size (n) =…

Q: Sometimes when you are sick, your forehead feels really warm. You might have fever. How can you find…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: A magazine provided results from a poll of 1500 adults who were asked to identity their favorite…

A: (a) Given : A magazine provide results from a poll of 1500 adults who were asked to identify their…

Q: It currently takes users a mean of 26 minutes to install the most popular computer program made by…

A: The random variable installation time follows normal distribution. We have to test whether the mean…

Q: The ages of the 5 officers for a school club are 18, 18, 17, 16, and 15. The proportion of officers…

A: Solution: Given information: p = 0.6 Population proportion.  To check whether the sample proportion…

Q: A team of researchers would like to determine whether the number of households that use the internet…

A: The correct option is ‘these samples are independent’.Explanation: The two samples which are derived…

Q: Many times the results of a statistical test will be reported as " P < 5%." If your favorite a level…

A: The answer is as follows:

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

A: It is given that the sample size is 1000.

Q: The 2008 General Social Survey asked, “What do you think is the ideal number of children for a…

A: We have given that  Sample size n =678 Sample mean =3.22 Standard deviation =1.99

Q: What sample size is needed to give a margin of error within ±3%±3% in estimating a population…

A: We have given that,  Population proportion (p) = 0.4, margin of error (E) = ±3% = 0.03 and…

Q: Suppose that you add 3 to all observations in a sample. How does this change the sample mean? How…

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Q: Suppose a one sided test for a proportion resulted in a p-value of 0.06. What would the p-value be…

A: We have given that a one sided test for a proportion resulted in a p-value of 0.06. If test is…

Q: According to Quantcast analytics of CrossFit.com, 59% of CrossFitters have children. Suppose we take…

A: a) It is known that, the mean of the sampling distribution of p-hat is equal to the population…

Q: Only about 13% of all people can wiggle their ears. Is this percent higher for millionaires? Of the…

A: In this scenario, It is appropriate to use one proportion Z test. 1. The correct answer is “z-test…

Q: If n=15, (x-bar)=38, and s=8, find the margin of error at a 99% confidence level

A: Margin of error: E=tα2×SE Degrees of freedom: 14(=15-1). Using Excel function, “=T.INV.2T…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.