The heights of NBA players are normally distributed, with an average height of 6'7" (i.e. 79 inches), and a standard deviation of 3.5".  What fraction of NBA players have a height less than 77 inches?

Q: A survey of 1000 men ages 20 to 30 found that their heights were normally distributed, with a mean…

A: Solution: Let X be the height of men ages 20 to 30. From the given information, X follows normal…

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

A: Here, mean is 60 thousand and standard deviation is 10 thousand. a. The proportion of trucks can be…

Q: Use the range rule of thumb to estimate the standard deviation. Round results to the nearest tenth.…

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Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score…

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Q: The systolic blood pressure of 18-year-old women is a roughly bell-shaped distribution with a mean…

A: We have given that.   X~N( μ , ?^2 )   μ =120 , ? =12   Z-score =( x - μ )/?

Q: The weights of 1,000 children average 50kg and the standard deviation is 5kg. How many children…

A: Given  mu=50, sigma=sd=5, n=1000 We want to find How many children weigh between 40kg and 55 kg?

Q: A sample of weights (in pounds) for six 12-year-olds is given below:   97 75 91 83 80 96   Find…

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Q: During I week, an overnight delivery company found that the weights of its parcels were normally…

A: 1. a. The percent of the parcels weighed between 12 oz and 30 oz is obtained below: It is given that…

Q: The annual commissilons per salesperson employed by a retailer of mobile communication devices…

A: Let X be the random variable from normal distribution with mean (μ) = $ 41200 ans standard deviation…

Q: A police radar gun is used to measure the speeds of cars on a highway. The speeds of cars are…

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Q: The data set has size 50. Approximately how many observations lie within one standard deviation to…

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Q: The life expectancy of a fluorescent light bulb is given by the number of hours that it will burn.…

A: The calculation for standard deviation are, x-x¯ x-x¯2 x-x¯2f -1971.1 3885235.21 7770470.42…

Q: The number of regular season wins for 10 college football teams in a given season are given below:…

A: x x2 2 4 10 100 15 225 5 25 13 169 10 100 15 225 9 81 7 49 4 16     ∑x=90…

Q: Given the data 18, 23, 26, 29, find the standard deviation to two decimal places answer rounded to…

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Q: The diameters of watermelons at a local supermarket are normally distributed with a mean of 10…

A: Let X denote diameters of watermelons at a local supermarket. Given that X follows Normal(mean = 10,…

Q: Write the steps of calculating the population standard deviation.

A: Standard deviation: The standard deviation is based on how much each observation deviates from a…

Q: Based on a mean of 78 and a standard deviation of 8, calculate the following: Z-Scores: 70 82 80 94

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Q: Given that the mean weight of senior high school students is 65kg with a standard deviation of 10kg.…

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Q: Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A: It is given that the mean and standard deviation are 50,000 and 12,000, respectively.

Q: The ages of employees in a certain company were bell-shaped with mean 28 and standard deviation 5.…

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Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

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Q: On a standardized exam, the scores are normally distributed with a mean of 650 and a standard…

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Q: The mean length of a human pregnancy is 267 days, with a standard deviation of 12 days. Use the…

A: Given data,Mean μ=267sd σ=12P(243<X<291)=?

Q: A sample was done, collecting the data below. Calculate the standard deviation, to one decimal…

A: Measure of central tendency measures the central or average value of a dataset. Measured of…

Q: The birth weights of newborn elephants are Normally distributed with a mean of 160 pounds and a…

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Q: Given that the mean weight of senior high school students is 65kg with a standard deviation of 10kg.…

A: given that ; let random variable X be a weight of senior high school students.and mean(μ)=65 kg…

Q: The weights, in pounds, of a group of dogs are:          18, 31, 22, 46, 55, 28.    Calculate the…

A: Given Data The weight of a group of dogs are: 18,31,22,46,55,28   The size of group is N=6   The…

Q: What is the value of k?   What is the standard deviation?

A: Here use basic of discrete probability distribution

Q: Given a scenario where n=100 and p=0.8, find the standard deviation.

A: In this case the sample size is n = 100 and p = 0.8.

Q: Nabisco claims that Chip Ahoy Cookies have an x=28.67 per cookie with a SD=2.67. Assuming this…

A: Here, the sample standard deviation is given as 2.67.

Q: "The weights of 1,000 children, in average, is 53kg with standard deviation of 11kg. Suppose the…

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Q: The standard deviation of the given data is A. 1.4495 B. 1.4597 C. 2.1011 D. 2.1307

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Q: A sample was done, collecting the data below. Calculate the standard deviation, to one decimal…

A: Given :

Q: On a construction site, the amount of dirt scooped by a forklift machine is normally distributed…

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Q: "The weights of 1,000 children, in average, is 46kg with standard deviation of 11kg. Suppose the…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: A sample of weights (in pounds) for six 12-year- olds is given below: 90 75 85 85 97 91 Find the…

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Q: The percentage of observations that are contained within 3 standard deviations of the mean is O a.…

A: As per the empirical rule for normal distribution, 68%, 95%, and 99.7% of the values lie within one,…

Q: On a standardized exam, the scores are normally distributed with a mean of 170 and a standard…

A: We have to find z score..

Q: The results of a calculus exam are normally distributed with a mean of 76 and a standard deviation…

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Q: Find the standard deviation (rounded to the nearest unit) for the data indicated.   Test Score…

A: Solution: x(1) Frequency (f)(2) f⋅x(3)=(2)×(1) f⋅x2=(f⋅x)×(x)(4)=(3)×(1) 50 3 150 7500 60 6…

Q: If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5…

A: Given Information: Mean = 90  Standard deviation = 5 Standardized score for a pitch that is 97 miles…

Q: Calculate the standard deviation of the data shown, to two decimal places 14 10.2 15.8 20.6 6.9 5.9

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Q: The mean of a distribution is 50 and the standard deviation is 6. Using the empirical rule, find the…

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Q: John beale of stanford, ca, recorded the speeds of car driving past his house, where the speed limit…

A: Given: μ=23.84σ=3.56 a) The Z score is obtained as below: z=x-μσ=20-23.843.56=-3.843.56=-1.08 Thus,…

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Assume that a person in the U.S. eats of M&M's per year follow normal distribution. μ=25σ=3 Let…

Q: The diameter of a basketball is normally distributed, with a mean, u, of 9 inches, and a standard…

A: The distribution of the diameter of basketballs given as, N(µ=9, σ=0.5).

Q: A survey of 1000 men ages 20 to 30 found that their heights were normally distributed, with a mean…

A: From the provided information, Mean (µ) = 65 inches Standard deviation (σ) = 2.5 inches

Q: Based on a mean of 78 and a standard deviation of 8, calculate the following:   Z-Scores:   70…

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Q: Assuming that the heights of college women are normally distributed with mean 65 inches and standard…

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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.