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Data from the department of motor vehicles indicate that 80% of all licensed drivers are older than age 25.
a. In a sample of n=60 people who recently received speeding tickets, 38 were older than 25 years and the other 22 were age 25 or younger. Is the age distribution for this sample significantly different from the distribution for the population of licensed drivers? use ox=.05.
b. In a sample of n=60 people who recently received parking tickets, 43 were older than 25 years and the other 17 were age 25 or younger. Is the age distribution for this sample significantly different from the distribution for the population of licensed drivers? use ox=.05
Assume a random sample of 50 architects and engineers is selected. How likely is it that the random sample contain five or fewer women in these positions.
1.incomes in a certain town are strongly-right skewed with mean 36000 and standard deviation 7000. a random sample of
find the sample error of the mean if the sample size is 3. d.
Why is the standard deviation so large?- If it writes only two of these policies, what are the mean and standard deviation of the annual profit?
a trucking firm delivers appliances for a large retail operation. the packages or crates have a mean weight of 294 lb.
One main goal of statistics is to use non-complete information to draw a conclusion. Often (especially in economics) the conclusion from statistical analysis can trigger some specific policy response. In your response to this thread, think about..
What proportion of children 10 to 15 would be classified as hyperlipidemic (assume that hyperlipidemia is defined as a total cholesterol lelvel of 200)?
a tennis player makes a serve 72 percent of the time. suppose the player gets 80 serves in a match.what is the mean and
The heights (in inches) of seven adult men are 73, 68, 67, 70, 74, 72, and 69.- Find the median height for this list.
That the requirement is NULL AND VOID. To be PROVED UNWORKABLE and sink like the Titanic? It is WORTH a little delay to have such a desirable result, isn"t it?
Identify the independent variables in the experiment.- Write a model relating the mean milk production, E(y), to the independent variables. Identify and code all dummy variables.
Why is population shape of concern when estimating a mean? What does sample size have to do with it?
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