The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 54 ounces and a standard deviation of 9 ounces. Use the Standard Deviation Rule, also known as the Empirical Rule (see image below). Do not use normalcdf on your calculator. Suggestion: sketch the distribution in order to answer these questions. a) 99.7% of the widget weights lie between and b) What percentage of the widget weights lie between 45 and 81 ounces? % c) What percentage of the widget weights lie below 72 ?

Q: The weights of a certain dog breed are approximately normally distributed with a mean of 51 pounds,…

A: The mean is 51 pounds and standard deviation is 6.1 pounds.

Q: The coefficient of variation CV describes the standard deviation as a percent of the mean. Because…

A: Given Data :  Below table will be used to calculate the mean and standard deviation   Height…

Q: c) The amount of sodium sulfate, in mg, found in the bottled water follows a normal distribution…

A: We have given that Mean(µ) = 13Standard deviations (σ) = 2.5X ~ N (µ, σ )= N (13,2.5)

Q: A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the…

A: Vending machine dispenses coffee into a 12 ounce cupx=12standard deviation()=0.07

Q: Time Spent Online Americans spend an average UI 8 hours per day online. If the standard deviation is…

A: Given,

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: The Z-score of a normally distributed random variable X, with mean µ and standard deviation σ at the…

Q: Human pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15…

A: The mean is 267 days and the standard deviation is 15 days.

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: Report the mean (including standard deviation), median, and mode for the following data set of worm…

A: From the provided information,The data values are as follow: 6, 4, 11, 12, 13, 9, 10, 14, 8, 4, 7,…

Q: The distribution of the monthly rents of studio apartments in L.A. is normal in shape, with mean…

A: Given,   Mean = 1082 Standard deviation = 88

Q: 3.) If you choose 25 companies, what is the probability that they a 0.5 percent? A.) 0.0162…

A:

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: GIVEN DATA, normal distribution μ=100σ=15we have to find out the indicated IQ score for the given…

Q: Fill in the following blanks. a. A standardized variable always has mean and standard deviation . b.…

A:

Q: Given the spot speed of 20 vehicles on a certain traffic section. Use 8 classes. Determine: a. The…

A: Please find the explanation below. As asked by you, I have answered the questions (a) and (b).

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A:

Q: In some reports, the mean and coefficient of variation are given. For instance, one report gives the…

A: From the provided information, Average (x̅) = 2.0 Coefficient of variation (CV) = 2.5% or 0.025

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Given data normally distributed with mean of 100 and standard deviation of 15.From the given graph,…

Q: Body and exam measurements were collected from 300 subjects. The pulse rates from 100 males have a…

A: Step 1: Identify the lower and upper limit (cutoff values) using the range rule of thumbLower Limit…

Q: The distribution of the lengths of long-stemmed roses is mound-shaped and symmetric with the mean…

A: The mean is 15 and the standard deviation is 2.

Q: The per capita consumption of chicken rose from 36.9 pounds in 1965 to 90.1 pounds in 2015 according…

A: A) Mean is average of all data points. x = 110+93+......+86/152 = 86 Standard deviation  =…

Q: The state and will spend 15 hours average a week and class and the standard deviation is 2 hours…

A:

Q: The student's weighted mean score is (Simplify your answer. Round to two decimal places as needed.)

A: From the given information,Score, xPercent of final grade,…

Q: We have provided simple data sets for you to practice the basics of finding a a. population mean. b.…

A:

Q: A survey collected the data below. x 26 4 16 12 20 The mean is 15.6. Calculate the deviation of…

A: Given data,  X : 26, 4, 16, 12, 20 Given mean is 15.6 To find the deviation of x = 16