Assume the mean height of soldiers to be 68.22 inches with a variance of 0.8 inches. How many solidier in a regiment of 1,000 would you expect is be over six eet tall?

Q: A study finds that the carapace length of an adult spider is normally distributed with a mean of…

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Q: Express the k th percentile, Pk , of a normally distributed variable in terms of its mean, μ, and…

A: The kth percentile represents the area of k to the left of z. Here, the kth percentile is calculated…

Q: The life of a 9-volt battery is normally distributed with a mean of l = 2000 hours and a standard…

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Q: the variance and standard deviation are based on the________________?

A: Variance, standard deviation and mean deviation:Variance is the average of squared difference of…

Q: For normally distributed variables, approximately what percentage of values fall within two standard…

A: Given a normally distributed variable X. Let us assume its mean is µ and standard deviation…

Q: Dr. Samwell Tarly wants to estimate the number of books checked out of the library in the past year.…

A: It is given that the mean is 10,000 and the standard deviation is 10.

Q: Suppose the average amount of apples per tree in a large orchard is 600 pounds with a standard…

A: Given, Population mean µx=600 pounds Population standard deviation σx=70 pounds a. Assuming that the…

Q: In another company, every worker received a 5% raise. How does this affect the mean salary? The…

A: Every worker received a 5%. The mean defines that the center or average of the data and it is…

Q: What is the standard deviation of y?

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Q: Calculate variançe and standard deviation from the given data,

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Q: Based on the regression output, approximately what % of the variance is explained by the regression…

A: Given Multiple R = 0.8299 R square = 0.7511 Adjusted R square = 0.7015 Standard Error = 65.3355…

Q: can you find the mean and standard deviation?

A: Let the male data set is denoted by x, then the mean is given by the formula x¯=∑xxn. Where, the…

Q: The standard deviation of 15 scores was 5 and the mean was 85. What was the variance?

A: We have given that  N=15 Mean=85 Standard deviation=5 Note: According to Bartleby Expert guidelines,…

Q: An analysis of a data set (N = 16) has revealed that its standard deviation (SD) of 2. Then, what is…

A: GivenN=16standard deviation(SD)=2

Q: The life of a 9-volt battery is normally distributed with a mean of U = 2000 hours and a standard…

A: Percentiles: If the elements in the data set are arranged in ascending order of magnitude, then the…

Q: Suppose that wedding costs in the Caribbean are normally distributed with a mean of $8000 and a…

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

Q: The length of an injection- molded plastic case that holds magnetic tape is normally distributed…

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Q: The range and the variance are both measures of distance.

A: Solution-: The range and the variance are both measures of distance.

Q: A statistics test has a mean of 60 and a standard deviation of 10 while an accounting test has a…

A: Given information Statistics test Mean µ = 60 Standard deviation σ = 10

Q: The annual per capita consumption of bottled water was 30.2 gallons. Assume that the per capita…

A: Given information- Population mean, µ = 30.2 gallons Population standard deviation, σ = 13 gallons…

Q: A z-score of −1 tells us that a score fell one standard deviation below the mean in a group of…

A: Empirical rule: For a normal distribution, the approximate values that fall in the specified…

Q: Is it possible to obtain a negative value for the variance or standard deviation?

A: The variance and the standard deviation, which is the square root of the variance are the most…

Q: If x is normal with mean and variance, find

A: Given Data: X is random variable   X~ Normal (μ, σ2)

Q: Refer to the data in images.  Test for a significant difference in the variances of the initial…

A: Solution: It is asked to test the claim that is there a significant difference in the variances of…

Q: In a herd of cattle, the mean milk production is 160 lbs per day with a variance of 400 Ibs per day.…

A: Given that the mean milk production in the cattle is,  μ=160 lbs per day & with a variance,…

Q: Suppose a random sample of 25 measurements was taken from a population with a mean of 74 and a…

A: We know that,  Sample size (n) = 25 and population mean (μ) = 74 and population standard deviation…

Q: Find the 30th and 98th percentile values of a normal variable with Mean of 12 and Variance of 3 (if…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: As the n and number of samples you take increases, so does the mean none of the above accuracy…

A: Statistics is the branch of applied Mathematics in which we do collection, analysis, interpretation…

Q: SAT scores are normally distributed with a mean of 1,800 and a variance of 22,500. Given arandom…

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Q: when designing aircraft cabins, what ceiling height will alow 98% of men to stand without bumping…

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Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

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

A: In statistics, variance is the average squared distance of each data points from the population…

Q: Suppose that the variance of a hypothetical population is 49. What is the standard deviation?

A: Solution : Given : σ2 = 49 The variance of the population is denoted by σ2 and standard deviation is…

Q: 10 Assume the mean height of soldiers to be 68.22 inches with a variance of 10.8 inches. How many…

A: Given data: Mean = 68.22 Standard deviation  = 10.8 Number of soldiers  = 1000

Q: The lengths of a large stock of titanium rods follow a normal distribution with a mean (u) of 440 mm…

A: Given that, The lengths of a large stock of titanium rods follow a normal distribution with a mean…

Q: A sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard…

A: Given statistics:Consider the variable x represents the distance scores in yards.The given…

Q: The average number of newspapers for sale in an airport newsstand is 12, and the variance is 25. The…

A: We have given that  Average and variance for newspapers.  Average = 12 Variance = 25 Standard…

Q: The foreman at a large plant estimates that there are defective parts about 1% of the time.  If the…

A: It is given that n =20,000 and p = 0.01.

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: Given Information: μ=20 and σ=3.2 (b) To estimate the percentage of showers that used more than 26.4…

Q: What relation exists between the average deviation of the mean?

A: Note: Hi there! Thank you for posting the question. As your question is not clear, as per the…

Q: is 32, the estimate of the variance of the model errors is

A: Given: multiple regression model with no of regressors k=3 and sample size n=20  also error sum of…

Q: The hotel room rate in Miami, Florida is normally distributed with a mean of $286 per night. Assume…

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Q: What is the variance of a data set with mean score of 87.5 and a standard deviation of 2?

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Q: The daily water usage per person in Davao City is normally distributed with a mean of 20 gallons and…

A: Empirical Rule : The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is…

Q: The finished inside diameter of a piston ring is normally distributed with a mean of 10 cm and a…

A: The mean of the diameter of the piston ring is 10 cm. The standard deviation of the piston ring is…

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Assume that the results are normally distributed. Pedro took an exam in a class in which the mean…

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Q: IF THE VARIANCE OF A POPULATION IS 0.75, THE STANDARD DEVIATION MUST BE?

A: It is an important part of statistics . It is widely used .

Q: Given that the mean and standard deviation are $24 and $3. Calculate the variance.

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Q: Assume that the weight of 1-year-old girls in the USA is normally distributed with Mean = 9.5 kg,…

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