In a large community, 44% of the people have blood type O. Let p be the proportion of people who have blood type O in a random sample of 616 people from the community. Find the standard deviation of the sampling distribution of p .

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A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Given a normal distribution whose mean is 590 and whose standard deviation is 74, find the…

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Q: In a normal distribution, the ___________ focuses on 50% of the cases instead of the highest and…

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Q: With the aid of a table, find the sample Standard Deviation of the following dataset: X = {2.2, 4.7,…

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Q: Assume the sample size of the population is 20,000  n = 800, p = 0.749 determine the standard…

A: Givenp=0.749n=800Assume the sample size of the population is 20,000

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Q: In a distribution exactly normal, 7% of the items are under 35 and 89% are under 63. What are the…

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Q: a. How many standard deviations away from the mean is a beetle with mandible length of .44 mm? b.…

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Q: Calculate the sample standard deviation of the following data collected regarding the number of…

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A: Given that sample size is n = 36 Mean = 71 And SD = 24

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Q: the mean and standard deviation of a population are 200 and 20 respectively. suppose the sample size…

A: Given data,μ=200σ=20If n=36the mean of the sampling distribution=?

Q: b) Suppose that in a random sample of 600 customers, 270 express satisfaction with the dealership.…

A: sample of 600 customer

Q: The average annual income of 10 million people working in Manila is P100,000. The standard deviation…

A: It is given that, Population mean (μ) = 100,000 Population standard deviation (σ) = 2500 Sample size…

Q: For the Reese's pieces scenario, compute the standard deviation of sample taking if the size of the…

A: Answer - For the Reese's pieces scenario, the size of the samples is n =  200 and the proportion of…

Q: Suppose the true proportion of voters in the county who support an independent candidate for county…

A: We have given that,  True proportion or probability (p) = 0.42 Then,  q= 1 - p = 1- 0.42 = 0.58 q=…

Q: The standard deviation of a sampling distribution is smaller than the standard deviation of the…

A: The comparison of sd of sample to the sd of the population is as follows:

Q: 75 percent of persons taking a certain professional certification exam pass. Consider, for a samples…

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Q: Consider a binomial distribution. About 35% of all college students are currently enrolled in an…

A: Given : Probability of success = p = 0.35 Number of sample = n = 25

Q: b) The American Automobile Association reports that the average time it takes to respond to an…

A: Given  μ=38, σ=9.002 and n=80

Q: A hypothetical distribution for a population of test scores has a mean of 60.4, a median of 62.8,…

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Q: Compute for the sample mean, sample variance and sample standard deviation. The score of the 5…

A: Given: The scores are provided as:                                                    35, 15, 31,…

Q: Use a formula to find the standard deviation of the sample 1, 4, 5, 6.

A: We have given that,  The data set of the sample is,  1, 4, 5, 6 Then,  We will find the standard…

Q: Suppose a population has three values 13, 17 and 24. What is the standard deviation of the sampling…

A: Given, Population values are 13, 17 and 24. Samples are drawn without replacement.

Q: Find the probability that a randomly selected year of rain in Sydney, Australia has a yearly…

A: Given Population mean μ=137, population standard deviations σ=69, Let X be the rain in Sydney Note:…

Q: According to a survey in a​ country, 38​% of adults do not own a credit card. Suppose a simple…

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Q: A group of science students plans to take an SRS of 25 days in the year to see what proportion of…

A: Given that the students plans to take a SRS (simple random sample) of 25 days in the year where 41%…

Q: In a normal distribution, 31% of the items are under 45 and 8% are over 64. Find the mean and the…

A: Given Data: Let X represent the variable P(x<45)=0.31 P(x>64)=0.08   X~ Normal μ, σ2   To…

Q: The average drive to work is 9.6 miles. Assume the standard deviation is 1.8 miles. If a random…

A: From the given information, x¯=9.6σ=1.8n=36

Q: The results of a nationwide aptitude test in mathematics are normally distributed with 80 as the…

A: Solution

Q: Sweet Rush is an ice cream shop chain that has locations all across the nation, Customers at Sweet…

A: Solution-: Given: μ=1.40,σ=0.85,n=10 We find, (a) μX¯=? (b) σX¯=?

Q: In a normal distribution, find the proportion of the population within three fifths of a standard…

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Q: The monthly In distributed, with mean of $100 standard deviation of $13. Find the probability that a…

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Q: A class has an equal number of boys and girls. The boys all got 78% on a test and the girls all got…

A: From the provided information, Boys got 78% on a test and girls got 84%. Let n = number of girls =…

Q: Thirty-two percent of adult internet users have purchased products or services online. For a random…

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Q: a survey found that 21% of Americans watch fireworks on television on July 4.  Find the mean,…

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Q: Given a non-normal population with a variance of 25 and mean of 13. If the size of a sample is n =…

A: Assume the variable of interest is X.

Q: Compute the standard deviation of the sampled proportions if p=.8 and n=50. Round to three places.

A: Given,n=50p=0.8

Q: Which of the statements below is true about the standard error of the sampling distribution of the…

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Q: A random sample of 12 students showed the following time (in hours) of sleep 4.5 5 5.5 6 6 7 7.5 7.5…

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Q: On average, accountants earn approximately an average of $6500 per year in the United States. Assume…

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Q: As the sample size n increases, the standard deviation of the sampling distribution decreases.

A: The standard error (SE) of a statistic is approximately the standard deviation of a statistical…

Q: In a large population, 55% of the people get a physical examination at least once every two years.…

A: The known values are, n = 100, p = 0.55 The mean of the sampling distribution is,

Q: Compute for the mean and the standard deviation of the sampling distribution of the sample mean…

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Q: For a random sample of 25 students from a very large university, the accompanying table shows the…

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Q: The SAT scores of 12 randomly selected high school seniors are given as: 1700 1940 1510 2000…

A: If the SAT scores of n=12 students are x1,x2,...,x12, then a.) The sample mean…

Q: The proportion of Americans who are satisfied with the way things are going in their lives is 82%.…

A: From the given information the sample size is (n) = 100 and the proportion of Americans who re…