Standardized with a new mean
A reading test was given to 4200 students. The test was quite normal with the mean=84 and s=12. If the test was standardized with new mean of 50 and s=10, What would raw score of 90 equal to?
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When we say there is homogeneity of variance, what exactly are we saying? (You need to be very clear in specifying which variances you are talking about. Give your answer in words. No symbols please.)
Past surveys reveal that 31 percent of tourists going to Las Vegas to gamble throughout a weekend more than $1,000. Management desires to update this percentage. Using the 99 percent confidence, management wants to determine the percentage of tour
A random sample of 80 students was taken. Seventy percent of students in the sample passed the class. Test the hypothesis at the 1% level of significance. Determine the p-value and conclusion?
The town officials recently undertook extensive campaign to encourage registered voters to participate in election process. They are interested in determining whether the promotional campaign actually raised the proportion of voters. The correct s
The proportion of zeroes is then equated to the Poisson probability of zero, and the equation solved for the rate, . This estimates the average number of elements per quadrat, which can then be scaled up to give an estimate of their total.
More recent methods do frequently rely on p-values. Why do you think that might be? What is the difference between a critical value and a test statistic?
We want to design a new placebo-controlled trial to evaluate an experimental medication to increaselung capacity. The primary outcome is peak expiratory flow rate, a continuous varialb emeasured in leters per minute.
Write the tree digram for a coin that tossed three times then list each of the 8 member of the sample space and define a random variable as equal to:
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