If X is a normally distributed random variable with mean -61 and standard deviation 22, find the value such that the probability that the random variable will be above it is 0.25.

Q: The starting salary for a computer programmer major has a mean of $39,269 and a standard deviation…

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: A study at a college in the west coast reveals that, historically, 45% of their students are…

A: According to the sum A study at a college in the west coast reveals that, historically, 45% of their…

Q: A population has a standard deviation of 25 and a mean of 300. Given a random sample of size 100,…

A:

Q: A population has a standard deviation of 16. If a sample of size 64 is selected from this…

A:

Q: e monthly utility bills in a city are normally​ distributed, with a mean of ​$100   and a standard…

A: Given: Mean, μ=100 Standard deviation, σ=15 (a)  Probability that a randomly selected utility bill…

Q: The average time for a courier to travel from Manila to Pampanga is 200 minutes, and the standard…

A: given that  mean (μ) =200sd (σ) = 10

Q: n a recent year, the ACT scores for high school students with a 3.50 to 4.00 grade point average…

A:

Q: If the total cholesterol values for a certain population are approximately normally distributed with…

A: Let X denote the total cholesterol values for a certain population and it follows normal…

Q: For a random variable that is normally distributed, with mean of 80 and standard deviation of 10,…

A:

Q: mean of µ = 70 and a standard deviation of σ = 10, what is the probability of obtaining a sample…

A: Given data: A normally distributed population with mean and standard deviation is given as:…

Q: If x represents a random variable with mean 117 and standard deviation 40, then the standard…

A: Given : Mean , u = 117  standard deviation, σ = 40

Q: For a binomial distribution with n = 15 and p = 0.2, what is the standard deviation of the…

A:

Q: If a random variable X has the normal distribution with mean 9 and standard deviation 2, about what…

A: Given data, mean=9 sd=2 P(X<5)=?

Q: X is Normally distributed with a mean of 500 and a standard deviation of 40.  What is the…

A:

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

A:

Q: The weight of football players is normally distributed with a mean of 180 pounds and a standard…

A:

Q: Furnace repair bills are normally distributed with a mean of 263 dollars and a standard deviation of…

A: Here, µ = 263 and σ = 25.

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

A:

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A: Let X be the random variable from normal distribution with mean (μ) = 100 and standard deviation (σ)…

Q: An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with…

A: The mean is 1,300 and the standard deviation is 260 hours.

Q: If a random sample of size 14 is drawn from a normally distributed population with mean 43.5…

A: Let, X=the variable Given that X follows a normal distribution with mean=43.5 and standard…

Q: In a normal distribution with mean 375 and standard deviation 48, how large a sample must be taken…

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

Q: he monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A: Let X be the monthly utility bills in a city are normally distributed with mean μ=$100 and standard…

Q: height in the male population is normally distributed with a mean height of 5–11 (71 in.) and a…

A: Here is given that mean is 71 inches and standard deviation is 4 inches. 6 ft is equal to 72 inches.

Q: For a random variable that is normally distributed, with mean of 80 and standard deviation of 10,…

A:

Q: he reading speed of second grade students in a large city is approximately​ normal, with a mean of…

A: P(X>96)=?

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n= 64,then the population…

A:

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

A: Given,mean(μ)=8.4standard deviation(σ)=1.8sample size(n)=40

Q: Given a normal distribution (X) with mean = 100 and standard deviation (σ) = 10,  w hat is the…

A: Let X be a continuous random variable is normally​ distributed with a mean of 100 and a standard…

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A:

Q: If X is a random variable with mean 5 and standard deviation 3, then the mean of the random variable…

A: The random variable is X.

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

A: Given Information: Mean = 8.4 Standard Deviation = 1.8 n = 40

Q: If the mean and the standard deviation of a continuous random variable that is normally distributed…

A: Solution

Q: If the mean is two, the standard deviation is one, and a value for a normally distributed random…

A:

Q: Suppose a waitress keeps track of her tips, as a percentage of the bill, for a random sample of 60…

A:

Q: A. C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of…

A: Let x be the number of hours ages of 2 and 5 watch television which follows normal distribution with…

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n = 64, then the population…

A:

Q: A sample of size 45 will be drawn from a population with mean 10 and standard deviation 5. Find the…

A: Central Limit Theorem states that if you have a population with mean μ and standard deviation σ and…

Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56…

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

Q: The average drive to work is 9.6 miles. Assume the standard deviation is 1.8 miles. If a random…

A: From the given information, x¯=9.6σ=1.8n=36

Q: The life expectancy of a particular brand of tire is normally distributed with a mean of 60,000 and…

A:

Q: The monthly In distributed, with mean of $100 standard deviation of $13. Find the probability that a…

A:

Q: For a populations mean of 22.3 and standard deviation 4, find the probability that the random…

A: The mean is 22.3 and the standard deviation is 4.

Q: For a normal distribution curve with a mean of 15 and a standard deviation of 4, which range of the…

A: Let X be the random variable from normal distribution with mean (μ) = 15  and standard deviation (σ)…

Q: If x=26,412 tuition per a four year and n=7,498 is standard deviation. Assuming the distribution is…

A: From the provided information, Mean (µ) = 26412 Standard deviation (σ) = 7498 X ~N (26412, 7498)

Q: Suppose population 1 is all blue cars sold at used car auctions, and the mean sale price of all such…

A: Given  Sales of red cars and blue cars and few other parameters.we need to find whether it has 2…

Q: If the random variable of X is normally distributed with a mean of 50 and a standard deviation of…

A: Given that, Let X is normally distributed random variable with a mean of 50 and a standard deviation…

Q: For a normally distributed random variable with mean 44 and standard deviation 16, find the…

A:

Q: If a random variable that is normally distributed has a mean of 25 and a standard deviation of 3,…

A: Given,mean(μ)=25standard deviation(σ)=3

Q: are normally​ distributed, with a mean of $100 and a standard deviation of ​$13. Find the…

A: Given: μ=100, σ=13 The corresponding z-values needed to be computed are: The probability that 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.