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Q1) One hundred Lower Wabash Tech students take 10-question multiple-choice test with 4 answers to each question, exactly one of which is right. All of students are unprepared and must guess at each question.
a) Of the 100 test takers, how many are expected to get each possible score?
b) Richard is one of test takers. Find out the number of questions he can expect to get right on test by random guessing.
Compute standard error of mean? Compute the margin of error, with 95% confidence.
For which of the following situations is it appropriate to use a scatter diagram or scatter plot?
Here is a scatterplot of average crawling age versus average outdoor temperature six months after birth followed by a plot of the residuals versus average outdoor temperature six months after birth.
A population of scores has p = 44. In this population, an X value of 40 corresponds to z = - 0.50. What is the population standard deviation.
Determine percent of the garages take between 29 hours and 34 hours to erect? Determine percent of garages take 28.7 hours or less to erect?
The ANOVA procedure is a statistical approach for determining whether or not:
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
Evaluate your histograms for any outliers in your data. Based on your evaluation of outliers, you may trim no more than 1% of the data contained in the data set. This must be done symmetrically (i.e., trimming no more than 0.5% off the top and 0.5..
Is the hot-air balloon significantly shorter than light rail? How can you tell? What do you tell university officials?
Carry out suitable multiple comparison procedure to determine the source of the difference.
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
A major study examined the relationship between cause of death (heart attack, cancer, stroke, accident, etc.) and age. A good way to graphically represent the relationship is with
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