38. Astudy showed that a group of professional players can score 26 points on average in a single game with a standard deviation of 4 points. If a sample of 5 players is drawn from this group, what is the mean, variance, and standard deviation of the sampling distribution of the sample means?

Q: Suppose the profit margins for eight big companies are 14 %, 9 %, 8 %, 10 %, 12 %, 5 %, 7 %, and 6…

A: Formula : sample variance :

Q: Suppose that 42% of students of a high school play video games at least once a month. The computer…

A: Solution: Given information: N= 792  Population  size  n= 30 Sample size  p^=0.40 Sample proportion…

Q: Compute for the variance of the sampling distribution

A: Given, Data 18 20 22 29 30 32 N = Population size = 6 n = sample size =4

Q: Compute the standard deviation of sample taking if the size of a sample is 200 and the proportion on…

A:

Q: Calculate the mean, median and standard deviation of these six numbers: 4, 2, 8, 3, 12, 9

A: Given,4, 2, 8, 3, 12, 9sample size(n)=6

Q: If 80% of the applicants are able to pass driver’s proficiency road test, find the mean, variance,…

A:

Q: 2. How do you compute for the variance and standard deviation of the sampling distribution of sample…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Suppose multiple samples of size n  are drawn from a population with a probability of success equal…

A: Defined : probability of success equal to 57% p=0.57

Q: Suppose​ 18% of​ movie-goers say that horror is their favorite movie genre. If a random sample of…

A: Obtain the mean number of movie-goers that prefer horror movie genre. The mean number of movie-goers…

Q: If the size of a sample is 64 and standard error of mean is 1.5.What should be the sample if…

A:

Q: of the sampling distribution of the means. There are total of 150 track and field athletes at the…

A:

Q: Suppose it is known that 80% people own a cellphone. If a random sample of 100 people were surveyed,…

A:

Q: Suppose that we randomly select a sample of 80 measurements from an infinite population having a…

A: 1) Given: Mean μ=30 Standard deviation σ=5 Sample size n=80

Q: 8. If the probability of a detective and standard deviation for the distribution of defective bolts…

A: We have to find mean and standard deviation for given data.

Q: 2. Suppose the wait times at doctor's office are normally distributed, with mean of 30 minutes and a…

A: Let, X= wait time in office μ=mean=30 σ= sd=10

Q: Assume that the climate conditions on Earth are such that years hotter than the historical average…

A: (1) The following hypothesis can be formed H0: p=0.5 where p is the probability that a hotter year.

Q: What is the probability of getting a sample mean between 500 and 520 if the population mean is 500…

A:

Q: 1. The mean IQ of 10000 students of AW University is 98 with standard deviation of 4. If 100 of them…

A:

Q: 9. Under what circumstances will the distribution of sample means be normal?

A:

Q: 7 What is the spread of the sampling distribution of X1-X₂?

A:

Q: Too many outliers on our sample data is acceptable as long as data are summarized and presented by…

A: An outlier in a data set is a point that lies far away from the remaining data points.

Q: - Compute the mean, variance and standard deviation of the sampling distribution of the sample mean…

A:

Q: het are the variance and standard deviation of the sampling distribution of the sample mean if n =…

A: Given that  n=45 , s=13 Find variance and standard deviations of sampling distribution of sample…

Q: Suppose 35% of students intend to major in the health sciences. What is the minimum sample size…

A: Consider that p is proportion of all students intend to major in the health sciences.

Q: Let's say that the intelligence quotient of Telecome company employees is normally distributed with…

A:

Q: A doctor believes that 80% of all patients having a particular disease will be fully recovered…

A: From the provided information, A doctor believes that 80% of all patients having a particular…

Q: Suppose that the sampling distribution of size 10 has a mean of 30 and standard deviation of 3.…

A:

Q: 8. Describe the sampling distribution of the difference between two sample means when large samples…

A: We have to describe the sampling distribution of the difference between two sample means when large…

Q: The mean cost of a set of new set of Queen sheets having a 500 thread count is $65.40 with a…

A: We have given that, Population mean (µ) = $65.40, standard deviation (σ) = $7.41 sample size (n) =…

Q: Can you... a) Create the distribution of sample means with n= 3 for the population 2, 4, 6, 8? b)…

A: Solution: Part a) The  population is given as (2, 4, 6, 8 ) and sample size is: n= 3 All possible…

Q: Suppose 36% of movie goers say comedy is their favorite genre. If a random sample of 120 movie goers…

A: Obtain the mean number of movie goers that prefer comedy. The mean number of movie goers that prefer…

Q: Suppose I want to know how many primary care physicians (PCPs) that Americans have had in their…

A: Given data : 1,3,4,6,10,3,2,1,14,11 Arrange in ascending order 1,1,2,3,3,4,6,10,11,14

Q: 2. The average number of pages in a novel is 326 with a standard deviation of 24 pages. If a sample…

A: For a random variable X, with mean μ and standard deviation σ , the average of X =1n∑xii=1n =X¯…

Q: 1. True or False The sampling distribution of the mean will have the same mean as the original…

A: We have to find out given probabiity..

Q: What is the mean of this distribution?   What is the standard error of this distribution?

A: Let p be the true proportion of voters in the county who support a specific candidate. Given that p…

Q: 2.Suppose that 60% of middle school students in San Diego wear braces. A random sample of 250 San…

A: Given Information : Suppose that 60% of middle school students in San Diego wear braces. A random…

Q: Suppose the average client charge per hour for out-of-court work by lawyers in Saskatchewan is $125.…

A: Given that, σ2=525,n=32μ=125 The standard deviation is, σ=σ2  =525  =22.91287847 The probability of…

Q: What proportion of the distribution of sample means is between a z  of 1.34 and z of -1.00?

A: P(1.34<z<-1.00)=?

Q: Find the sample standard deviation. 2, 6, 15, 9, 11, 22, 1, 4, 8, 19 Send data to Excel O 2.1 0 7.1…

A: Ans - Given the following data2,6,15,9,11,22,1,4,8,19Find sample standard deviation x x2 2 4…

Q: Suppose that 80% of apples are worm-free. Explain why it would not be unusual to find 84% of a…

A: p0=0.8p=0.84H0=0.84     VS  H1≠0.84Z-statistic=p-p0p0×1-p0n

Q: The word counts of five essays are 507, 621, 553, 600 and 580. If simple random samples of size 2…

A: If repeated samples of size n from the population is drawn and the sample means is calculated, then…

Q: The standard deviation of the sampling distribution of the sample mean is also called the --------

A: We know that from the definition.  The standard deviation of the sampling distribution of the sample…

Q: 2. The probability that a package is delivered on time is 0.97. If 500 randomly selected packages…

A: Givenprobability that package delivered on time (p)=0.97sample size(n)=500

Q: To study the IQ of middle school students, a sample of 64 middle schoolers is selected and the…

A:

Q: 2- According to the National Association of Colleges and Employers Spring 2015 Salary Survey, the…

A: Solution: Given information: n= 50 Sample size  μ=$48127 Population meanσ= $9200 Population standard…

Q: A. A fair coin is flipped 5 times, what is the probability of resulting in exactly 2 heads and 3…

A:

Q: Explain the conditions to compute the standard deviation of the sampling distribution of the mean?

A: According to the Central Limit Theorem, for a population with finite mean and non-zero variance, the…

Q: 4. True or False The standard error for the sampling distribution of the mean is equal to

A: Statndard error is sigma/squre root of n Where n is sample size

Q: t a large university, 68% of the students have a laptop, while only 43% of professors have one. Let…

A: A two proportion  z-test allows you to compare two proportions to see if they are the same. The null…

Q: Suppose that 8% of all males suffer some form of color blindness. 350 men are sampled. a. What is…

A: