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An April 2004 article stated that Americans have an average of 2.11 televisions per household. If the standard deviation for the number of televisions in a U.S. household is 1.3 and a random sample of 90 American households is selected, the mean of this sample belongs to a sampling distribution. What is the mean of this sampling distribution? What is the standard deviation of this sampling distribution?
The analysis needs to be re-run adding the error into the regression sum of squares.
An insurance agent has appointments with four prospective clients tomorrow. From past experience the agent knows that the probability of making a sale on any appointment is 1 out of 5.
What is the probability of obtaining 4 ones in a row when rolling a fair, six-sided die? Interpret this probability. Suppose that E and F are two events and that P(E and F) = 0.21 and P(E) = 0.4. What is P(FE)?
Pollsters try to determine whether or not a person is a "likely voter" before they count their opinion in a poll. If we assume 40% of the registered voters will actually vote, in a random sample of 100 registered voters we can be 95% confident tha..
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
Draw a bell curve for each one of the following normal probability distributions: the standard, the sat and Binet Intelligence scale. Draw a separate bell curve for each one.
A sample of 420 families revealed the following. At the 0.05 significance level, is there a difference in the proportion of customers that prefer each day of the week?
x you then repeat this procedure three more times. you learned in class that u_x = u can you conclude that the mean of the four sample mean will be equal to the population mean, 65? why or why not?
Now we would like to evaluate regression equation for X using Y as independent variable.
you have learned some of the basic terminology of statistics. please propose a study and write a description of the
the table below gives the size of the freshman class entering bsc for the past several years.class
What is the difference between the R and R-squared terms? What does each tell you? How large should the R-squared term be if you want to show that the two variables are practically related?
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