PBS News Hour reported that %39.4 of americans between the ages of 25 and 64 have a two year degree. assume that 50 americans are selected randomly. b) what are the variance and standard deviation for the number of people with at least a two year college degree (to 4 decimals)

Q: About 6% of the population has a particular genetic mutation, A group of 135 people is randomly…

A: Answer: From the given data, n = 35 Probability (p) = 6% =0.06 Let X = number of population has…

Q: The probability that Mugdho loses an armwrestling match against Snigdho is 40.0%. Let's say, there's…

A:

Q: What is the variance and standard deviation of 2, 4, 5, and 6?

A:

Q: Construct a sample with at least two different values in the set of five measurements who’s mean is…

A: According to the provided information, the mean should be 3 of five observations.

Q: 6, 8, 9, 4, 3, 11, 4, 6, 5, 7,19 find the standard deviation for this sample show work

A:

Q: The probability that Mugdho loses an armwrestling match against Snigdho is 30.0%. Let's say, there's…

A: Given information: The probability that Mugdho loses an armwrestling match against is 30%. There are…

Q: You want to estimate the average size of the shoes of kids going to your bowling alley so you can…

A: From the provided information,The data values are as follow:2, 3, 4, 5, 6, 6, 7, 7The mean is 5.

Q: been reported that 73% of federal government employees use e-mail. If a sample of 225 al government…

A: According to the provided information, Sample size (n) = 225 Probability (p) = 0.73

Q: Assume that the time spent by students in extra curricular activities per week is normally…

A:

Q: The weights, in pounds, of a small group of randomly selected dogs are 34, 37, 42, 57, 64, ar…

A: We have given that,  The data set are :- 34, 37, 42, 57, 64 Then,  We will find the sample standard…

Q: find the mean, variance, and standard deviation   Twenty-one percent of U.S. employees who are late…

A: The value of mean is 0.84, which is obtained as follows:

Q: 20, 24,29,20,36,41  which numbers on the list are within 1.5 standard deviations of the average

A:

Q: Explain the formula for the variance of the sampling distribution of the mean?

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: cores of the 7 randomly selected students are 35,17,15,31,22,27,38. Complete the table and compute…

A: To find the sample mean, sample variance and sample standard deviation.

Q: 10 10 13 14 1) Calculate the mean. 4.

A:

Q: At a supermarket, the mean waiting time to get to the checkout counter is 5 minutes and the standard…

A:

Q: Describe about the Converting a Raw Score to z.

A:

Q: The waiting time for a bus has a uniform distribution between 2 and 11 minutes. What is the 75th…

A: The objective of this question is to find the 75th percentile of a uniform distribution. A uniform…

Q: Suppose math scores on the SAT are normally distributed with a mean of 500 and a standard deviation…

A:

Q: What is the relationship between the standard deviation of the population and the standard deviation…

A:

Q: What are the range, variance, and standard deviation of 0, 5, 10, 15, 20, and 25?

A: The following information has been given: 0, 5, 10, 15, 20, 25

Q: A test has 20 multiple choice questions with three options of answer. There is ONE(1) correct…

A: Let random variable X be the number of correct answers. X has binomial distribution with parameters…

Q: The marks obtained by a class of students in an introductory statistics test are as follows: 53, 50,…

A: given observations : 53, 50, 80, 75, 45, 72, 90, 80, 20, 100. n = 10 mean = ?

Q: United States are mixed racially and ethincally.  Consider the population consisting of all married…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: About 10% of the population has a particular genetic mutation. 1000 people are randomly selected.…

A: Binomial distribution is a discrete distribution that deals with the probabilities of success and…

Q: You draw a sample from the blood of six LSU students are given the following numbers 96 110 140 160…

A: sample standard deviation s=31.30921

Q: A sample of twelve dogs are in a dog park. They weigh (in pounds) 10, 55, 62, 34, 28, 50, 71, 65,…

A:

Q: About 7% of the population has a particular genetic mutation. 162 people are randomly selected.…

A: We have to find mean and standard deviations..

Q: 20, 24,29,20,36,41  which numbers on the list are within .5 standard deviations of the average

A:

Q: what is the sample variance and standard deviation of 21​,16​,3​,9​,11

A: The formula for sample variance and standard deviation is given by:

Q: Describe about the z TEST FOR A POPULATION MEAN.

A: Z-test for significance of a single mean: The z-test is appropriate when population standard…

Q: 12. Find the variance of normal distribution.

A:

Q: 14) Find the score that separates the top 80% from the bottom 20% if the Mean is 100 and the…

A: Given information Mean (µ) = 100 Standard deviation (σ) = 26 The score that separates the top 80%…

Q: standard deviation for 15, 22, 18, 7 13, 12

A: Solution: Let X be the random variable. The given data is 15, 22, 18, 7, 13 and 12.

Q: About 7% of the population has a particular genetic mutation. 183 people are randomly selected.…

A: Given Information: Number of people, n = 183 Percentage of population has a particular genetic…

Q: The probability that Mugdho loses an armwrestling match against Snigdho is 60.0%. Let's say, there's…

A:

Q: 14) In a survey of 2000 American adults, 57% of women have experienced street verbal harassment…

A: Given P=0.57 n=2000

Q: what is the standard deviation for 12,10,15,12,20

A: X (X-xbar)^2 12 3.24 10 14.44 15 1.44 12 3.24 20 38.44

Q: About 7% of the population has a particular genetic mutation. 1000 people are randomly selected.…

A:

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.