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Suppose you have a histogram that shows relative frequency. How do you calculate the proportion of the sample that lies between any two of the histogram bars?
of 375 randomly selected medical students 30 said that they planned to work in rural community. find a 95 confidence
a consumer organization estimates that over a 1 year period 18 of cars will need to be repaired once 7 will need to be
The Money & Investing section of The Wall Street Journal contains a summary of daily investment performance for stock exchanges, overseas markets, options, commodities, futures, and so on.
Calculate the standard deviation of the data. For this calculation compute the difference between each one of the observations and the mean.
a distribution of scores has mu 40 and sigma 18a. describe the distribution of sample means based on samples of n36
you compute a correlation coefficient that equals .25. given this what is the value for the explained
parts manufactured by an injection molding process are subjected to a compressive strength test. twenty samples of
At the 5% level of significance, can we infer that the difference in the level of satisfaction with service between the two branches is wider than 5 p.c. points?
Test the hypothesis that = 800 hours against the alternative 800 hours if a random sample of 30 bulbs has an average life of 788 hours. Use a 0.04 level of significance.
Summarize the results of the data analysis.
according to the consumer electronics manufacturers association 10 of all u.s. households have a fax machine and 52
Describe how the three interval estimates will be related to each other. Which of the three intervals is most likely to contain the population mean?
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