For a large Internet seller their average customer spent $51.28 during the Black Friday sale with a standard deviation of $9.53 if a sampling distribution is created for samples of 75 customers what would the mean and standard deviation of the sampling distribution of the sample means

Q: The daily revenue at a university snack bar has been recorded for the past five years. Records…

A: Question 1 option a

Q: For a data set if arithmetic mean=50, median=50, and standard deviation =5. The distribution of…

A: given: mean = 50 median = 50 standard deviation = 5

Q: or the data shown, answer the questions. Round to 2 decimal places. X 21.3 14.3 23.2 2.1 10.3 18.1…

A: The data set of x is given.

Q: If the sample size is 36 and the population standard deviation is 24, then the standard deviation of…

A:

Q: The mean weight of newborn infants at a community hospital is 6.6 pounds. A sample of seven infants…

A: Sample points are 9.0,7.3,6.0,8.8,6.8,8.4,6.6. Sample size = n = 7.

Q: If you have 100 people in your sample, what would be the degrees of freedom you use to calculate the…

A: Given, n=100 Degree of freedom(df)=?

Q: If you wanted to know who was smarter “for his age" Nico, a 6 year old, or Sam a 74 year old, you…

A: Given Nico was 6 year old and Sam a 74 year old We wanted to know who was smarter for his age. For…

Q: b. For a sample of engineers, the mean salary is $95,000 with a standard deviation of S30,000. The…

A: Given data: The mean of salary is m = $95000. The standard deviation is σ = $30000. The median…

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A: For the given data,  We have to calculate mean, median, range and standard deviation and variance.…

Q: For the set of scores 5,10,10,15,25 calulate the mean, median,mode,range variance, and standard…

A: We have given that data  5,10,10,15,25 Mean = sum of all observations/total number of observations…

Q: The bank of America's VP feels that each saving account customer has, on average, 3 credit cards.…

A: The bank of America's VP feels that each saving account customer has, on average, 3 credit cards.…

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A: The sampling distribution of a statistic is known as the probability distribution of all the…

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

A:

Q: Twenty-five percent of commercial airline accidents are caused by bad weather. If 300 commercial…

A: The mean of the binomial random variable obtained by the formula μ=np, where (n) is the number of…

Q: For the following sample of scores: 28 22 38 26 14 8 4 If the mean is 20, Then the standard…

A: Given x-bar=20 n=7

Q: Suppose two sections of the same class take the same exam and produce the results shown in the…

A: The relative frequency distribution of section 1 scores and section 2 scores, are given.

Q: Coffee shop customers were randomly surveyed and asked to select a category that described the cost…

A: Class interval fi Mid value, xi fixi fixi2 0-2 2 1  2 2 2-4 3 3 9 27 4-6 6 5 30 150 6-8 5 6…

Q: For a population with a mean of 35 and standard deviation of 7, find the sample mean of size n = 20…

A: The formula to find the sample mean is, x¯=μ+zσn From the Standard Normal Table, the value of z for…

Q: In a normal distribution, 11% of the items are under 35 and 76% are under 83. Find the mean and…

A:

Q: A reading specialist wanted to estimate the mean word length, in number of letters, for an…

A: Given data Sample size ,n=100 Sample mean  x ̅  =4.9 letters Sample SD , s=0.15 letters

Q: In a normal distribution of scores, four participants obtained the following deviation scores:…

A: Given Information:  Deviation scores = -1, +2, +3 , -0.15

Q: Given that the mean of a set of data is 40 and the standard deviation is 2, what is the coefficient…

A: Given,standard deviation(σ)=2mean(μ)=40

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: For the data shown, answer the questions. Round to 2 decimal places. x 8.1 7.5 6.6 15.2 7.1 1.7…

A: The given data set is , 8.1,7.5,6.6,15.2,7.1,1.7,16.6,10.2,13.1,29.3 The mean is,

Q: In an upstate county in New York state, county administration did a statical study on household…

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

Q: For the data from a sample shown below, answer the questions. Round to 2 decimal places. x 29.4…

A: Given data, 29.4,5.4,18,4.4,19.3,13.2,18.4,29.3,17.1,1   Sort the given data in ascending order.…

Q: 2. How is the sample size related to the deviation?

A: We have to define how sample size is related standard deviation

Q: For an extremely skewed distribution of scores, which measure of central tendency would be the most…

A: Median: Median of the data is the value that divides the higher half and the lower half of the data…

Q: For a perfectly symmetrical distribution with a median of 30, what is the value of the mean?​   a.…

A: Concept: For a perfectly symmetrical distribution Mean and median are same.

Q: which value of л would it be safe to assume the sampling distribution of Y is approximately normal?

A: here given ,  n=100

Q: In a small company of 10 people the salaries are as follows: 5 people earn $25,000, 3 earn $27,000,…

A: Questions   find mean (x→) and standard deviation (σ).   Data Given - 5 people earn $25,000   3…

Q: What are the mean and standard deviation of the sampling distribution of the difference in sample…

A:

Q: For the following sample of scores, if the sample mean is 20: 28 22 38 26 14 8 4 The standard…

A: Given,  Data is : 28, 22, 38, 26, 14, 8, 4

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: For a perfectly symmetrical distribution with a median of 30, what is the value of the mean?

A: It is given that the distribution is perfectly symmetric and the median is 30.

Q: The average age of a car registered in the Land Transportation Office is 10 years or 120 months.…

A: Sampling Distribution of a Normal Variable :  Given a random variable X. Suppose that the population…

Q: for the set of scores 10 15 20 20 15 calculate the range variances and standard deviation by hand

A: Given that ; scores(x) ; 10 15 20 20 15 By using formula  Range = highest value - lowest value…

Q: For a moderately skewed distribution, the arithmetic mean is 100 and the coefficient of variation is…

A:

Q: With the extra data value,  the range, standard deviation, and variance is?

A: Given data: 3.31 2.79 2.83 1.97 1.69 2.54 2.46 3.44 3.93 1.59 2.86 1.61 2.57 4.02 2.49 2.42…

Q: The manager of a fast-food restaurant selected several cash register receipts at random. The amounts…

A: Given data values are 12, 15, 16, 10 and 27. a. Range: Range=Maximum value-Minimum value…

Q: Allan, a Grade 12 senior high school student, wants to estimate the average number of students who…

A:

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: As the new manager of a small convenience store, you want to understand the shopping patterns of…

A: Let X represents the purchase amount. x 39.05 2.73 32.92 47.51 37.91 34.35 64.48…

Q: Given that the mean of a set of data is 25 and the standard deviation is 3, what is the coefficient…

A: Given: Mean = 25 Standard deviation = 3

Q: The following percentages of chloride were found: 32.52%, 32.14%, 32.61%, and 32.75%. Find the mean,…

A: The following percentages of chloride were found: 32.52%, 32.14%, 32.61%, and 32.75%  We can rewrite…

Q: For a population that has a standard deviation of 22​, figure the standard deviation of the…

A: Population standard deviation = 22 We know that standard deviation of the distribution of means = σn

Q: The average speed of 64 random cars traveling on a certain highway was 80 km/h and the sample…

A: We have given that,  Average speed (x̄) = 80 , standard deviation    (s) = 20, Confidence level(C.I)…

Q: For the following situation, find the mean and standard deviation Find the mean and standard…

A:

Q: For the sample data 7, 9, 10, 11, 13, 22find the standard deviation (give your answer in three…

A: Given data is7,9,10,11,13,22sample size(n)=3

Q: Suppose you have a distribution with a mean equal to 100, median equal to 75, and mode equal to 50.…

A: Given that  Mean =100 Median =75 And Mode=50