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Question 1: The following data set shows the amount of time consumers have to wait on hold, in minutes, before talking to a customer service representative. Compute by hand the mean and standard deviation. Take a picture, scan your work, or type up a detailed solution. Explain what the mean and standard deviation tell you about this data set.
Question 2: The distribution of the ages of a nation's population has a strong influence on economic and social conditions. The following table shows the age distribution of U.S. residents in 1950 and the projected distribution in 2075, in millions of people.
Because the total population in 2075 is much larger than the 1950 population, comparing percent in each age group is clearer then comparing counts. Make a table of the percent of the total population in each age group for both 1950 and 2075. Use excel to enter the original data and to compute the percentages.
Using excel create two histograms with a vertical scale in percents for the 1950 and 2075 population data.
Insert the histograms into a word document and discuss the main features of each histogram and compare and contrast them.
question 1 partial derivatives and total differentials show your stepsfor f x y lnx2 y solve for its gradient vector
john fixx a master plumber is considering a five year investment plan using the 2200 windfall from his last job in
How can you or your department decide whether or not the observed differences over time are important? How could using a mean difference test help?
If a person bought one share of Google stock within the last year, what is the probability that the stock on that day closed at more than $400?
Elastic energy is the potential mechanical energy stored
Teen* is an example of what search strategy
Choose a company and use any of the 2 (qualitative or quantitative) research and analysis methods to demonstrate selected perceptions (approved by the faculty) of the company. This project requires you to research, review, and analyze perceptions ..
How many relations on A are both symmetric and antisymmetric?
Use the 3-day weighted moving average method for forecasting days 4-7. Use Weight 1 day ago = 2, Weight 2 days ago = 4, and Weight 3 days ago = 3. Compare the techniques using the mean absolute deviation (MAD).
What is the chi squared statistic for the given information?
Find the mean and standard deviation of the number who spend at least $15 per month. What is the probability that at least 40% of them will spend a t least $15 per month?
consider the following lpmaximize z4x15x23x3subject tox1x24x3le6x12x2x3le7x14x22x3le12a add slack variables x4 x5 and
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