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Recognize sample, population, sample statistic, and population parameter:
Nasonex is the drug used to treat allergy symptoms. In the test of Nasonex, 374 children aged 3 to 11 years were treated with 100 micrograms of Nasonex, and 17% of them experienced headaches.
The university police department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows Poisson distribution with a mean of 9 tickets per day.
Find out a linear equation in the form P = mt + b (y = mx + b) that gives the population, P, t years from 2010.
Testing for population mean - How would this information be useful to you if you were the college register?
Students in a statistics class at a large state university were given the survey in which one question asked was age (in years); one student was a retired person, and her age was an "outlier".
A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable
A researcher is testing the effect of a new cold and flu medication on reaction time. A sample of n = 9 students is obtained and each student is given the normal dose of the medicine.
If the confidence interval limits do not include age below 20 does it mean that motor cyclists under the age of 20 rarely die in crashes?
Test whether there is a difference in the mean of times men and women and determine the p-value.
A research analyst regresses the number of calls for service (Y) on the Fahrenheit temperature at 4:00 in the afternoon (X). The regression equation finds: Y = 62 + 2.4 X with an r 2 of .67
Which of the following is not true about the student's t distribution? It has more area in the tails and less in the center than does the normal distribution.
One measure of the overall sampling error in the entire distribution of sample means is the
Suppose a simple random sample of 20 non-English student have an average math score on the SAT exam of 528. What are the appropriate hypotheses?
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