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Explain how you would select a distribution for a hypothesis test or confidence interval?
A manufacturer of flashlight batteries took a sample of 13 batteries from a day's production and used them continuously until they were drained. In what ways would this information be useful to the manufacturer?
a couple decide that they will keep having children until they have one of each sex. stop as soon as they have both
The least-squares regression line equation and R2.
Dana and Cathy are playing tennis. The probability that Dana wins at least one out of two ames is 0.3. What is the probability that Dana wins at least one out of four?
exploratory data analysis.a. perform exploratory data analysis on all variables in the data set. realizing that you
Several factors influence the value obtained for a t statistic. Some factors affect the numerator of the t statistic and others influence the size of estimated standard error in the denominator.
Determine point estimate of population mean? By using 90% confidence, determine the margin of error?
Report the t-value, whether you accept or reject Ho, and whether the difference was significant in a brief sentence.
A particular bulb is turned on once each evening for an average of 10 hr. If it is desired to have a reliability of 90 percent, what is its design life in days?
a what is the probability that two is the lowest number thrown?b what is the probability that five is the highest
Suppose a wildlife service wishes to estimate, with 99% confidence, the mean number of days of hunting per hunter for all licensed hunters in the state during a given season, with a bound on the error of estimation equal to 2 hunting days.
Explain why one would expect to find a positive correlation between the number of fire engines that respond to a fire and the amount of damage done in the fire. Does this mean that the damage would be less extensive if fewer fire engines were disp..
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