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Suppose we have a set of blood pressures with a mean of 70 Diastolic, and a sample standard deviation of 10 points. If we assume a normal distribution of Diastolic blood pressures, then between what two values can we be assured 99.7% of all Diastolic blood pressures will lie?
According to the National Football League, the average salary for players for the 2010 season was about $1.9 million while the median salary is around $770,000. Why are both numbers reported? What might the difference between the two statistics me..
If the researcher deems the data to be statistically significant, which of the following is true with respect to a conclusion reached?
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?
normal approximation to the binomial distribution.at a certain community college 60 of the students are female. if 300
1. a create a set of 5 points that are very close together and record the standard deviation. next add a 6th point that
From the past experience he knows that he population standard deviation is three days in testing to determine his blief he could use one of the following plans n=100 a=.01 n=75, a=.o5 n=50, a=.10.
1. for same data a process called coding makes computation of the mean easier. one kind of coding involves subtracting
Bonus is sales are made to 3 of the neighbors, and $200 if he able to sell to 4 neighbors. In how many ways can edwards make bonuses greater than $50?
What is the probability that the test will commit a Type II error?
At the .01 significance level, can we conclude that there is more variation?
Hypothesis test for one population mean - What is the alternative hypothesis and What is the null hypothesis?
Consider a finite size population for N in which you want to study a variable y that takes a very small value for the first element of the sampling frame
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