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The activity asks you to use a rating scale from 0 to 100. From observing your data, would a scale of 0 to 7 or 0 to 5 have been sufficient?
Field tests of this activity have shown that students are most dissatisfied with facilities and most satisfied with the academics at their institution.
Suppose you had switched the order of the categories with facilities being rated first. Do you think that would affect the ratings of the academics? How do you suggest the questions should be ordered?
In a clinical study of an allergy drug, 114 of 203 subjects reported experiencing significant relief from their symptoms. What is the point estimate of the true proportion of people who reported relief in the population.
specifications for an aircraft bolt require that the ultimate tensile strength be at least 18 kn. it is known that 10
Given a binomial distribution with n=29 and p=0.83, would the normal distribution provide a reasonable approximation? Why or why not.
Of the nine members of the board of trustees of a college, five agree with president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability that at least two of them would agree with..
If no intruder is present on a given night, what is the probability that the system will make the mistake of calling the police?
(a) Use Excel to compute both a three-period and a five-period moving average time series of company liquidations. (b) Plot the original time series of company liquidations and the three-period and five-period moving average values on the same grap..
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
1. the daily flow rate of contaminant from an industrial plant is modeled by a normal random variable with a mean value
a certain researcher thinks that the proportion of women who say that female bosses are harshly critical is greater
Estimating the Size of a Sample to Study
A nationwide standardized test taken by high school juniors and seniors may or may not measure academic potential, but we can nonetheless examine the relationship bewteen scores on such test and performance in college.
there is concern about the percent of on-time flights. a recent survey of two major airlines yielded the following
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