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The number of cases of tetanus reported in the U.S. during a single month in 1989 has a poisson distribution with a parameter of lambda= 4.5. 1. What is the probability that exactly one case of tetanus will be reported during a given month? 2. What is the probability that at most two cases of tetanus will be reported? 3. What is the porbability that four or more cases will be reported. 4. What is the mean number of cases of tetanus reported in a one month period? What is the standard deviation?
4 7 7 5 2 9 7 6 8 5 8 4 1 5 2 8 7 6 6 9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.
an electronic scanner is successful in detecting flaws in a material in 80 of the cases. three material specimens
q1. the ziteck corporation buys parts from international suppliers. one part is currently being purchased from a
an interaction effect that is not significant indicates thata. the influence of one factor is not the same for each
How many social robots would need to be sampled in order to estimate the proportion ofrobots designed with legs, no wheels to within .075 of its true value with 99%confidence
Set up the appropriate null and alternative hypothesis for testing whether the original sample overestimated the average executive director annual salary.
Fit a linear regression model for bp against sodium. Do you think this is a model with a good fit? Why?
The number of hours a light bulb burns before failing varies from bulb to bulb. The distribution of burnout times is strongly skewed to the right. The central limit theorem says that
you are head of risk management for the norne corporation. due to the size of your company you feel comfortable
One of these has a history of selling an average of 200 items, with a standard deviation of 20. If he wants to maximize his profits, how many should he order?
in how many ways can 12 indistinguishable muffins and 1 cookie be distributed among three children in such a way that
if the alpha level is increased from a .01 to a .05 what happens to the size of the critical region.a. it
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