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A box in a certain supply room contains four 40 w light bulbs, five 60-W bulbs, and six 75-W bulbs. If two are randomly selected from the box and at least one of them is found to be rated 75-W.what is the probability that both of them are 40- W bulbs?
Consider the following time plot of the values of variable Y for each month of a 60-month period. This plot displays
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data. This list of Webpages that Perform Statistical Calculations h..
The following estimated regression model was developed relating yearly income (Y in $1,000s) of 30 individuals with their age (X 1 ) and their gender (X 2 ) (0 if male and 1 if female).
Use α =.01 and test for a significant difference. What is your conclusion?
Mean and standard deviation are 584.6 and 34.28
What do you find out when you perform the nonparametric statistics?
Test whether the gender distribution for basketball fans is significant different from general college by proportion test.
each person received was determined by randomization. For each person who was sent one of the surveys, the researcher recorded whether or not a completed survey was returned.
At the 0.05 level of significance, is there sufficient reason to believe that the integers are not being generated uniformly?
Determining probability when guessing answers. Test comprise of multiple- choice questions each having 4 possible answers (a, b, c, d) one of which is right. Suppose that you guess answers to six such questions.
What is the probability of flipping a coin 6 times and getting 4 or more heads?
A realtor took a random sample of records of sales of homes from the files maintained by the Albuquerque Board of Realtors.
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