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What determines the width of bars in a histogram?
A. the apparent of limits of a score or interval
B. the real limits of a score or class interval
C. the frequency of a score of class interval
D. Cummulative frequency
a random sample of 44 unlv students is taken. the average age in the sample was 20.2 years with a standard deviation of
calculate the mean or expected value for the number of retransmissions and calculate the standard deviation for the number of retransmissions.
The margin of error for a sample size 25 is +-3. Will the margin of error be greater or less if the sample size is 400? What is the new margin of error?
q1 a researcher claims that the standard deviation of the ages of cats is smaller than that for dogs. a random
suppose the lifetime of a particular appliance follows an exponential distribution with a mean of 10 years. what is the
assume that the number of customers who arrive at a water ice stan d follows the poisson distribution with an average
Standard deviation of 0.7 inches. If 21 items is chosen at random, what is the probability that their mean length is less than 10.5 inches.
in a manufacturing plant employing a double inspection procedure the first inspector is expected to miss an average of
Do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient.
For a population with a mean of μ = 60 and a standard deviation of σ = 24, find the Z score corresponding to each of the following samples.
While 290 out of 400 in Batavia preferred the same flavor. To test the hypothesis that there was no difference in preferences in the two towns, what is the alternate hypothesis?
question 1 scores are obtained from the law school admission test lsat are normally distributed with a mean score of
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