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A warehouse distributor of carpet keeps 6000 yards of deluxe shag carpet in stock during a month. The average demand for carpet from the stores that purchase from the distributor is 4500 yards per month, with a standard deviation of 900 yards. what is the probability that a customer's order will not be met during a month?
For a standard normal distribution, findout the percentage of data that are among 3 standard deviation below the mean also1 standard deviation above the mean.
Determine the test statistic. At 95% confidence, test to determine if more than 21% of the population will like the new soft drink.
Using the emperical rule solve the following problems for a distribution with a mean of 20 and a stardard diviation of 5. At least what percentage of the values will fall between 15 and 25.
The frequency distribution below shows the distribution for suspended solid concentration (in PPM) in river water of 50 different waters collected in September 2011.
Based on a two-tailed 0.05 What do you conclude?
If you were told that on a particular day it was raining in Vancouver, what would be the probability that this day would be a winter day?
A study of 200 commercial firms revealed the data below. What is the probability that a particular firm will have 1 million or more in income after taxes?
Identify a research issue, problem, or opportunity that uses either interval or ratio level data (Recall that ratio level data are those data which have an absolute zero.
Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation
Teacher asked each of her students how many novels they had read in previous six months. Results are shown below. Create the frequency table for the number of novels read.
At the .05 significance level, can Macaray conclude that the population means are different? Note that you should show all 5 steps in the test of hypothesis.
What is an estimate of the proportion defective for the piston manufacturing process when it is control?
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