The speed limit of a road is 65 miles per hour. The speed of a car on the highway follows a normal distribution with a mean of 70 and standard deviation of 5. A police officer will only react to speeding if the person is going 3 standard deviations above A)3 B)65 C)80 D)90

Q: The number of goals scored by a college soccer team for a given season are 4, 9, 0, 1, 3, 12, 3, 7,…

A: The population mean is, μ=∑xN=4+9+0+1+3+12+3+7+4+5+8+212=5812=4.8333 The population mean is 4.8333.

Q: Among all the children in the playground, 95.4% are between 1.1 m and 1.7 m tall. Assuming that the…

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A:

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A: Chebyshev's Theorem: Let X be an integrable random variable with finite expected value μ and finite…

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A: The answer is found in step-2

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A:

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

A: Given,Mean μ=479Standard deviation=σ=41a)P(X<451)=PX-μσ<451-μσ    =PZ<451-47941…

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: To find the number of: a) Bunnies will hop between 41 and 44.5 inches b) Bunnies will hop between 48…

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: what is the z-score of a value of 28 of set A, given that the set has a mean of 26 and a standard…

A: The mean is 26 and the standard deviation 3.0.

Q: The mean rate for satellite television for a sample of households was $49.50 per month, with a…

A: According to the empirical rule,

Q: The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152…

A: Here mean = 1152 and SD = 84. z=(x-mean)/SD = (x-1152)/84

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

A:

Q: of driver's education students is 68 points, with a standard deviation of 4 points. Apply…

A: Given

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A: NOTE-AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY  Now  Here Given the salary of 12…

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A:

Q: Suppose that the scores on a statewide standardized test have a bell shape distribution with a mean…

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Q: According to the records of an electric company serving the Boston area, the mean electric…

A: The mean and standard deviation are 1650 and 320, respectively.

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A: The null and alternative hypothesis is,

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A: We have given that  X~N(mu, sigma^2) mu = 72  Z-score =(x-mu )/sigma

Q: The mean height of trees in the virgin forest of Zambales is 42 feet and the standard deviation is 3…

A: The mean height of trees in the virgin forest of Zambales is 42 feet and the standard deviation is 3…

Q: The score on a test have a mean of 100 and standard deviation of 15. If a personnel manager wishes…

A: From the given information we find the cut off score.

Q: Assume the speed of vehicles along an open stretch of a certain highway in Texas that is not heavily…

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

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A:

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A:

Q: Assume the speed of vehicles along an open stretch of a certain highway in Texas that is not heavily…

A: Given information- Population mean, µ = 71 mph Population standard deviation, σ = 3.125 mph Let, X…

Q: What is the standard deviation of a ribution that has a mean of 46.2 if a FORMANCE value of 28 is…

A: Given information: The mean of the distribution is µ = 46.2 The performance value is x = 28. The…

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Q: Assume that the heights of 400 basketball players are normally distributed with a mean of 175 cm and…

A: 3.  Assume that the heights of 400 basketball players are normally distributed with a mean of 175 cm…

Q: What is the z-score of a value of 27, given a set mean of 24, and a standard deviation of 2?

A:

Q: 4. Describe the data in terms of center spread and shape. 5. How tall would a player have to be in…

A: The data shows the heights of the players for the Boston Celtics in inches.

Q: The heights of male students are normally distributed with a mean of 170 cm and a standard deviation…

A: The heights of male students are normally distributed with a mean of 170 cm and a standard deviation…

Q: . If the probability of a defective bolt is 0.1, find (a) the mean (b) the standard deviation for…

A:

Q: What is the best approximation of the standard deviation ofthe measures -4, -3.0, 8, and 9?

A: Solution: Let X be the measure. The given data is –4, –3, 8 and 9.

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A: Hence,the percentage of the people taking the test score between 400 and 500 is…

Q: An agronomist measured the height of 134 canola plants. The mean height was 214 cm and the standard…

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Q: The following data give the speeds (in kilometer) as measured by radar of 5 selected cars traveled…

A: The data shows the speeds (in kilometer) as measured by radar of 5 selected cars traveled at NLEX.

Q: The standard deviation of the base price of a certain type of all-terrain vehicle is equal to $322.

A:

Q: The mean score of a competency test is​ 82, with a standard deviation of 2. Between what two values…

A: Given that : Mean (u) = 82 S. D. (sgma ) = 2 Assume data set is nell shapped i.e  standard normal.

Q: A construction laborer is asked to make stirrups for their project and notices that the average…

A: The average length of the rebars is 30 cm. The standard deviation of the rebars is 2 cm.

Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure…

A: Let X be the random variable such that drugs expenditure in-country  x̅: Sample mean of drugs…

Q: for a population with a standard deviation of 8 and mean of 40, draw a bell shaped curve, marking…

A: Given data  Mean = 40 and standard deviation= 8

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A:

Q: Consider a data set that has a mean of 16.8 and a standard deviation of 5.6. According to…

A: Given,          Mean μ =16.8          standard deviation σ=5.6    given interval has atleast 93.7%…

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.