Show that a variable measured by different scales, such as meter and
centimeter, will have the same coefficient of variation.
Consider the number of accidents occurring on a street.
State the necessary properties for the number of accidents to follow a
Poisson distribution.
Consider the number of accidents occurring on a street.
If the number of accidents occurring each day follows a Poisson
distribution with parameter μ = 0.01 , what is the probability that
more than 1 accidents occur in 3 days?
Consider the number of accidents occurring on a street.
One day, there is an accident occurred on the street 9:00am. What is the
probability that the next accident will occur before 3:00pm that day?
The following sample information is given concerning the English-writing
scores of high school seniors from two local schools.
The following sample information is given concerning the English-writing
scores of high school seniors from two local schools.
Are the two population means significantly different at the 5% level of
significance?
The following sample information is given concerning the English-writing
scores of high school seniors from two local schools.
Is there any necessary assumption for the above statistical inferences?
Why or why not?
In Regression analysis, we usually use two-tail t test and F test. What
would be your null hypothesis for each test? What are the alternative
hypothesis for the t test and F test respectively? What are the purposes
of them?
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