A class's quiz grades are normally distributed with a mean of 72.5% and a standard deviation of 0.75%. Draw and clearly label a Normal curve.

Q: Salaries for teachers in a particular elementary school district are normally distributed with a…

A: The 90th percentile is 12,730.09, which is obtained by using the Excel function…

Q: Assume that the hourly costs of operating a commercial aircraft are normally distributed with a mean…

A:

Q: Salaries for teachers in a particular elementary school district are normally distributed with a…

A: The properties of the normal distribution is,   The Normal distribution curve is and bell shaped…

Q: A standardized measure of achievement motivation is modeled by a normal distribution with a mean of…

A: Obtain the achievement score The achievement score is obtained below as follows:

Q: he cost of laptops is normally distributed with a mean of $750 and a standard deviation of $60. What…

A: GivenMean(μ)=750standard deviation(σ)=60

Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…

A:

Q: Scores on an English exam are normally distributed with a mean of 78.6 and a standard deviation of…

A: From the given information, The random variable X is scores on an English exam The mean is 78.6 The…

Q: A normal distribution has a mean of 62 and a standard deviation of 12. What is the median?

A:

Q: Assume that women have heights that are normally distributed with a mean of 63.6 inches and a…

A:

Q: amount of honey produced by local beekeepers is normally distributed with a mean of 140 pounds and a…

A: given data, normal distribution mean=140standard deviation=31smallest amount in the top 14% produced…

Q: pal you

A:

Q: Calculate the mean and the standard deviation.

A: The mean is also known as the average. It includes all the observations in the data set. It includes…

Q: mandatory competency test for high school sophomores has a normal distribution with a mean of 329…

A:

Q: The following are two data sets on car dealership sales at two dealerships. Which data set has the…

A: The standard deviation formula: standard dveiation = ∑xi-x2n-1Here,Xi= sample valuesx = sample meann…

Q: the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 70 miles…

A:

Q: The weight of a division I college football player has a mean of 255lb and a standard deviation of…

A:

Q: art professor gives an A to any student in the top 9% of the distribution. The grades are normally…

A: Given X~N(mean μ=60, standard deviations σ=5) P(X>b)=9%

Q: Assume that the hourly cost to operate a commercial airplane follows the normal distribution with a…

A: Consider X be a random variable which follows normal distribution indicates the operating cost of a…

Q: In a moderately asymmetrical distribution the values of mode and mean are 32.1 and 35.4…

A: Solution:

Q: the grouped data?

A:

Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

A: As given, The basketball player has a height of 6 feet 4 inches and when his height is converted to…

Q: The amount dispensed by a cola machine follows the normal distribution with a mean of 7 ounces and a…

A: Given, μ = 7σ = 0.10p = 0.01         To find value of x?

Q: standard deviation 0.9 minute. What proportion of the time does Mrs. Starnes finish an easy Sudoku…

A: It is given that  Mean, μ = 5.3 Standard deviation, σ = 0.9

Q: The amount of Jen's monthly phone bill is Normally distributed with a mean of $ 76 and a standard…

A: Answer: Using the given data, Let X: Jen's monthly phone bill amount X is normally distributed with…

Q: A normal distribution has a mean of 3.7 and a standard deviation of 2.3. What is the median?

A: From the provided information,

Q: During one season of racing at the Talladega Superspeedway, the mean speed of the cars racing there…

A:

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 63…

A: Solution: Let X be the speed of a vehicle along a stretch of highway. From the given information, X…

Q: The playing life of a Sunshine radio has a Normal distribution with a mean of 600 hours and a…

A: The playing life of a radio is normally distributed with mean 600 hours and standard deviation of…

Q: normal distribution has a mean of 62 and a standard deviation of 17. What is the median?

A: Let X be the normal distribution X~N(μ=mean=62, standard deviations σ=17

Q: The playing life of a Sunshine radio has a Normal distribution with a mean of 600 hours and a…

A: It is given that the mean is 600 and the standard deviation is 100.

Q: The income of trainess at a local mill are normally distributed with a mean of $1100 and a standard…

A: Let Y be the income of trainee mean = μ = $1100 standard deviation = σ = $150

Q: the standard deviation or the interquartile range

A: answer of given question is in step 2