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Consider the following demand and forecast.
Period Demand Forecast
1 7 10
2 12 15
3 18 20
4 22
If MAD = 2 for the four periods under consideration, what is the forecast for period 4?
The following table gives the homerun distances of ten home runs hit by Sammy Sosa and Mark McGwire. Find the range and standard deviation for each player
For the daily lottery game in Illinois, participants select three numbers between 0 and 9. A number cannot be selected more than once, so a winning ticket.
Use formula z=(mean of values in sample - mu subscript mean of values in sample) divided by (lower case sigma divided by sqrt number of values in sample)
When the p-value is used for hypothesis testing, the null hypothesis is rejected if
Use the correct formula to find the probability that, out of 10 customers, exactly 5 are familiar with the product. Show your calculations or explain how you found the probability.
The cholesterol levels of a population have a normal distribution with a mean of 160 and a standard deviation of 30 how you I find the percentage of the population with cholesterol levels above 200.
Test the hypotheses that the average household income in the township is greater than $100,000. Hint: Start by stating the null and alternative hypotheses.
the shape of the distribution of the time required to get an oil change at a 15 minute oil change facility is unknown.
An archer has a 30% chance of hitting the bull's eye on the target. a. What is the complement to this event and what is its probability?
A 'good' correlation is data-context driven. For example, I did a project correlating sales volume per state and customer demographics (pretty 'hard' data) and got a .92 correlation.
a consumer group decides to test the effectiveness of a new organic laundry detergent. they intentionally get grass
1. suppose a 95 confidence interval is computed for u resulting in the interval 112.4 121.6. then it would be accurate
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