Solve and show your steps: The mean, standard deviation and range of a symmetrical distribution of weights of a group of 20 boys are 40, 5 and 6 Kgs. respectively. Find the mean and standard deviation of the group if the lighted and the heaviest boys are excluded.

Q: Find the standard deviation of the lengths of the wolves in the entire animal preserve.

A: The mean of the lengths of the wolves in the entire animal preserve is,…

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: A given set of data has a specific standard deviation. Describe what will happen to the standard…

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Q: n a set of score, the coefficient of variation (in percentage terms) = 50% and standard deviation =…

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Q: Salespeople for a car sales company have an annual sales average of $225,000, with a standard…

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Q: Find the sample standard deviation.

A: Given that:n= 12  Sample size

Q: Find Mean Deviation : (i) about Mean (ii) about Median, in the following data: 2, 7, 9

A: Given data is2, 7, 9

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: If the grades are normally distributed and 8 students received a B, how many students took the…

A: Let C denote the grades of students. Given that X follows N(mean = 82, SD = 5), then  Z = (X -…

Q: The weight of football players is normally distributed with a mean of 200 pounds and a standard…

A: Given,mean(μ)=200standard deviation(σ)=25

Q: A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the…

A: Vending machine dispenses coffee into a 12 ounce cupx=12standard deviation()=0.07

Q: A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the…

A: Step 1: Determine what is askedWe need to determine the mean amount of coffee to be dispensed by the…

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Q: A history class has 95 members. If there is a 22% absentee rate per class meeting , find the mean…

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Q: Find the sample standard deviation. The top five scores on last semesters midterms were 90 97 100 90…

A: The question is about measures Given : Data - 90, 97, 100, 90, 93   To find : Sample std. deviation

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

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Q: Five hundred children participated in a field demonstration. Their heights averaged 110 cm with a…

A: Let X be a random variable such that X: Height of the children Since the sample is large (500)…

Q: What is the standard deviation?  Coefficient variation is 3%  and the mean is 4.

A: Step 1:Here given mean is 3.μ=3 Coefficient variation is 3%. Formula:Coefficient variation=μσ​×100…

Q: Below represents the amounts that a random sample of employees reported that they spent on dinner…

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Q: Suppose a variable is normally distributed. What percentage of scores fall between one standard…

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Q: The length of a fully grown hibiscus plants is normally distributed and has a mean of 35cm and a…

A: Given that,Mean(μ)=35standard deviation(σ)=4     The random variable  is length of fully grown…

Q: Steven ran the 100 meter dash in 13 seconds.  What is his T-score if the class mean was 14 seconds…

A: t statistic

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

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Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

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Q: Given the data: 47, 55, 57, 63, 73. Find the standard deviation. Round the final answer to the…

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Q: A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the…

A: Normal Distribution:Normal Distribution:The normal distribution is a continuous probability…

Q: art professor gives an A to any student in the top 9% of the distribution. The grades are normally…

A: Given X~N(mean μ=60, standard deviations σ=5) P(X>b)=9%

Q: The length of a fully grown hibiscus plant is normally distributed and has a mean of 35cm and a…

A: Given that, The random variable X is length of fully grown hibiscus plant. It is normally…

Q: A student takes a multiple-choice test that has 6 questions. Each question has four choices. student…

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Q: The weekly mean income of a group of executives is $1,000 and the standard deviation of this group…

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Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

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Q: Direction: Write the letter of the correct answer before each number. Use separate sheet for your…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Find Mean Deviation: (i) about Mean (ii) about Median, in the following data: 2, 7, 9

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

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