A variable (X) of a population has a mean of 35 and a standard deviation of 42. a. If the variable is normally distributed, describe (shape, center, spread) the sampling distribution of the sample mean for samples of size 9. b. Can you answer part (a) if the distribution of the variable under consideration is unknown? Explain. c. Can you answer part (a) if the distribution of the variable under consideration is unknown, but the sample size is 36 instead of 9? Explain.

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A: The mean is 500 and the standard deviation is 100.

Q: sets represented by the following histograms has the largest standard deviation?A data set lists the…

A: Given: Minimum = 3 Median = 15 Q3 = 16 IQR = 4 Maximum = 19

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Q: 3. The average age of the marketing executives in an ad agency is 26, with a standard deviation of…

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

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Q: According to a survey by Harris Interactive conducted in February 2009 for the charitable agency…

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Q: The mean of a population (μ) is 120 and the standard deviation is 20.  What is the mean of the…

A: From the provided information, Mean (µ) = 120 Standard deviation (σ) = 20

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A: The population mean is 56.3. The population standard deviation is 8.6. We have to write which…

Q: 4.) Determine the range and Standard Deviation of the set of data 4, 8, 9, 11, 13, 15

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A: The one-sample z-test is used to test whether the mean of a population is greater than, less than,…

Q: The mean and standard deviation of a population are 200 and 20, respectively. Suppose samples of…

A: Given : μ = 200 , σ= 20 and n= 36

Q: 2. Assume that, among residents of a large (over 6,000) Florida subdivision, the population mean age…

A: From the given information, The mean age is 65 and standard deviation is 2 years.

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A: From the provided information, Mean (µ) = 18 Standard deviation (σ) = 6 Let X be a random variable…

Q: give the sample standard deviation of this data set: 20, 25, 35, 40

A: Sample Standard deviation:   If the standard deviation is calculated for sample then it is called as…

Q: The mean and standard deviation of the sampling distribution of the mean is shown as?

A:

Q: 2. Calculate the frequency mean, the frequency standard deviation, the median and the first and…

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A: Class(1) Frequency (f)(2) Mid value (x)(3) f⋅x(4)=(2)×(3) cf(6) 0-10 4 5 20 4 10-20 23 15 345 27…

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Q: The mean number of travel days per year for salespeople employed by three hardware distributors…

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Q: A trucking company determined that the distance traveled per truck per year is normally distributed,…

A: A normal distribution is a continuous type probability distribution.It is also known as a…

Q: For a sample of 120 businesses, the average profit they generate in a month is $54,000 with a…

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Q: Salvatore, as the director of a regional bank, is concerned about the wait times of customers at the…

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Q: A college professor noted that the grades of his students in an introductory statistics class were…

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Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

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Q: # 6- A set of data items is normally distributed with a mean of 90 and a standard deviation of 5.…

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Q: The standard deviation of the distribution of sample means would be equal to:

A: The standard deviation of the distribution of sample means would be equal to ?

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A:

Q: 3- At a computer manufacturing company, the actual size of a particular type of computer chips is…

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Q: 3. The annual per capita consumption of ice cream (in pounds) in the Philippines can be approximated…

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Q: The following are grade point averages measured in a sample of 8 undergraduate students who are…

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Q: Suppose that, on average, electricians earn approximately µ = $54,000 per year in the United States.…

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Q: According to a report by the U.S. Fish and Wildlife Service, the mean length of six-year-old rainbow…

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Q: In a distribution with a mean of 80 and a standard deviation of 8, what percentage of number would…

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Q: Suppose that the amount of time that takes place for the Bureau of Internal Revenue to send refunds…

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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.