Based on tests of the Chevrolet Cobalt, the miles per gallon in highway driving are normally distributed with a mean of 32 mpg and a standard deviation of 3.5 mpg. Suppose that 10 Cobalts are randomly selected and the miles per gallon for each car are recorded. What is the probability that the mean miles per gallon exceeds 34 mpg?

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2010 Chevrolet…

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: According to a study done by Pierce students, the height for Hawaiian adult males is normally…

A:

Q: The weight of small dogs can be modelled by a normal distribution with a mean weight of 8.4 kg and a…

A: The provided information is:

Q: A particular fruit's weights are normally distributed, with a mean of 450 grams and a standard…

A:

Q: Deforestation along the Sierra Madre mountains have been especially notorious. The average number of…

A: It is given that  Mean, μ = 4115 Standard deviation, σ = 610 Z-Score, Z = ( X - μ )/σ

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

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

A:

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

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: When the weight of a parcel of oranges was measured, it was observed that the average 200 grams and…

A:

Q: The annual per capita consumption of ice cream (in pounds) in the United States can be approximated…

A: Let "X" be the annual per capita consumption of a randomly selected people living in the US consume.…

Q: The final exam scores in a statistics class were normally distributed with a mean of 63 and a…

A:

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: The speed limit on Interstate 81 in Susquehanna County is 70 miles per hour (mph).  On a clear day…

A: The speed limit on Interstate 81 in Susquehanna County is 70 miles per hour (mph) The mean speed of…

Q: Blood pressure is distribued Normally, with a mean of 85 mm and a standard deviation of 20 mm. As a…

A: Given,mean(μ)=85standard deviation(σ)=20sample size(n)=100

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard…

A:

Q: The speed limit on Interstate 81 in Susquehanna County is 70 miles per hour (mph). On a clear day…

A: Solution-: Given: μ=77.9mph,σ=8.2mph We find, P(a randomly selected car is going over 85 mph)=?

Q: During a wisdom teeth removal procedure, 1, 2, 3, or 4 wisdom teeth are removed, depending on the…

A: We have given that,  mean (μ) = 3.90 and standard deviation (σ) = 0.88 and sample size (n) = 10

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

A:

Q: The cost of textbooks is normally distributed with a mean of $232. You do not know the population…

A:

Q: Blood pressure is distribued Normally, with a mean of 85 mm and a standard deviation of 20 mm. As a…

A:

Q: The scores of individual students on the ACT Exam are modeled as normally distributed with a mean of…

A:

Q: In a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: Finding the lowest score that would qualify a student for an A grade:The points for the final exam…

Q: The average score of all golfers for a particular course has a mean of 61 and a standard deviation…

A: Mean()=61Standard deviation()=4Sample size(n)=64

Q: suppose the walking step lengths of an adult males are normally distributed with a mean of 2.7 feet…

A: Given that  Mean=μ=2.7 Standard deviation=σ=0.3 Sample size=n=70 X~Normal(μ=2.7,σ=0.3)

Q: In a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: Given that the mean value is 76 and the standard deviation is 7. Grades are assigned such that the…

Q: Find the probability that the mean of a randomly chosen sample of 25 students scores is between 72.3…

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Q: Frito Lay did a study on the weights of their bags of corn chips. It was found that the weight is…

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Q: While checking receipts at Reds, it was determined that the average amount spent on food per table…

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Q: The heights of strawberry plants are Normally distributed with a mean of 12 inches and a standard…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Suppose the average age of a Tulane undergraduate is 20 years with a standard deviation of 1.2…

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Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.5…

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Q: Based on tests of the Chevrolet Cobalt, the miles per gallon in highway driving are normally…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 120…

A: Given that.   X~N( μ , ?^2 )   μ=120     , ?=26   Z-score =( x - μ )/?   NOTE:- According to…

Q: Consider an experiment in which a coin is tossed thrice. Let X be the number of heads. Find the…

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Q: O A. 0.8615 OB. 0.8819 O C. 0.0062 OD. 0.9938

A: Let X be the random variable from normal distribution with mean (μ) = 124, standard deviation (σ) =…

Q: The weights of the guinea pigs in a laboratory are normally distributed with a mean weight of 2.1…

A: Suppose the random variable X defines the weights of the guinea pigs.

Q: The average score of all golfers for a particular course has a mean of 61 and a standard deviation…

A:

Q: Based on record, the mean weight of the newborn babies is 4.8lbs with a standard deviation of…

A:

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.