The probabilities that a person is receiving a chat message 0, 1, 2, 3, 4, or 5 per day are the following: 0.08, 0.19, 0.36, 0.25, 0.07, and 0.05. Find the mean, variance, and standard deviation end interpret the results.

Q: The ages​ (in years) of a random sample of shoppers at a gaming store are shown. Determine the​…

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Q: The ages (in years) of a random sample of shoppers at a gaming store are shown. Determine the range,…

A: The data is provided for the age (in years) of a random sample of shoppers at a gaming store. Range:…

Q: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth $1600,…

A: Given: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth…

Q: The ages (in years) of a random sample of shoppers at a gaming store are shown. Determine the range,…

A: The given data is as follows:12, 20, 23, 14, 17, 16, 19, 16, 15, 17The objective is to compute the…

Q: 95% of 80 freshman history students scored between 70% and 80% on a take home quiz. If this data is…

A: Given,  n=80 α= (1-0.95) =0.05 Let X denote the score of freshmen. As per t-distribution table, the…

Q: Find the variance and standard deviation to one decimal place of the ages, in years, of these five…

A: There are total n = 5 observations.

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: The ages​ (in years) of a random sample of shoppers at a gaming store are shown. Determine the​…

A:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: A flu test shows that about 31% of 90 patients visited hospital in the first week of January had…

A: Given that  n = 90 , p = 31% = 0.31 , q = 1 - p = 1 - 0.31 = 0.69 X ~ Binomial (n = 90 , p = 0.31) X…

Q: Find the variance and standard deviation of the data

A: Given data, x=5,6,8,9,10,11,14   The sample mean is

Q: Find the variance of the following sample data: 11, 13, 14, 15 and 21 (Write the answer up to 1…

A: Given that  11,13,14,15,21 To find the variance

Q: Find: -mean -variance -standard deviation  -z-scores Of this set of numbers: 1, 1, 2, 2, 2

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Q: Use the following data set (2,3,4,4,6,7,8,12) The variance=10.5 Find the standard deviation and…

A: We have given that,  The data set is,  2,  3,  4,   4,   6,   7,    8,   12 And variance = 10.5…

Q: The summary data from study demonstrates a stronger relationship between how many minutes per day a…

A: Given : A standard deviation is a measure of how dispersed the data is in relation to the mean. Low…

Q: Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and…

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

Q: Find the means, variance, and standard deviation.  Data: 10, 60, 50, 30, 40, 20,25

A: We have given that,  X :- 10, 60, 50, 30, 40, 20, 25 Then,  We will find the Mean, Variance and…

Q: The following data are the GPA’s of 12 students at State University. Determine the mean, median,…

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Q: Use the following values to answer question: 2, 4, 6, 5, 7, 3 What is the population variance?

A: The values are 2, 4, 6, 5, 7, 3.

Q: A study was done to look at the relationship between number of vacation days employees take each…

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

Q: A voin is tossed four times. Let x denote the number of heads. Find the mean and standard deviation…

A: A coin is tossed four times. The  denotes the number of heads.

Q: What is the variance and standard deviation of the following data: "20.3" "33.5" "21.8" "58.2"…

A: x x2 20.3 412.09 33.5 1122.25 21.8 475.24 58.2 3387.24 23.2, 538.24 110.4 12188.16…

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: In your two sets of Statistics tests, find the mean of the number of tests that will be passed. 1.…

A: Given: The provided dataset is given as: Number of passed test (x) Probability P(x) 0 0.25 1…

Q: Find the mean, median, variance, and the interquartile range of the following data: 1.58 2.51 4.04…

A: Given data is1.58,2.51,4.04,2.2,6.43,5.19,1.58,4.32sample size(n)=8

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: A concierge is interested in how long it takes to bring passengers to the airport and then return to…

A: (a) First we calculate the mean; The table of calculations is provided below; No. x (x-x¯)2 1…

Q: The probabilities that a person is receiving a chat message 0, 1, 2, 3, 4, or 5 per day are the…

A: Let X be the random variable having probability distribution is,  X 0 1 2 3 4 5 P(x)  0.08 0.19…

Q: State the formula for Variance.

A: Equation that defines the population variance σ2=∑(X-μ)2N Here, σ2 is variance, (X-μ) is distances…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: take the following data and calculate the variance and standard deviation by hand 10 12 20 20 25

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Q: The average person uses 130 gallons of water daily. If the standard deviation is 35 gallons , find…

A: Given that, Mean = 130 Standard deviation = 35 Sample size = 25

Q: In a survey, 80% of the voters support a particular referendum.  If 30 voters are chosen, find the…

A: Number of voters(n)=30∵80% of the voters support a particular referendum i..e. p=0.80

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: Given : A civil engineer takes a public ride going to his firm.  The average time for his trip is 24…

Q: Consider the following data: 2, 9, 5, 11, 7, 3. a. Calculate its mean and variance. b. If…

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Q: Find the variance of the following: 12.0, 9.5, 10.5, 18.4, 33.1, 41.7, 50.6, 29.9, 23.0.

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Q: Calculate Variance, Standard deviation, and Coefficient of Variation (CV) of the students heights.

A: Let X be the height of the student. A 179 174 156 171 170 165 170 157 155…