A survey of car rentals agencies shows that the average cost of a car rental is 0,35 per mile. The standard deviation is .05. Using Chebyshevs theorem, find the price range for which at least 93.75 % of the data values will fall
The average price of an electric tooth brush is 12 with a standard deviation of $1.25. Find the price range for which approximately 68% of the tooth brushes will sell. (use the empirical rule.
In a stats course the average for a final exam is 84 with a standard deviation of 5, Find the z score for a test score of 78
In a stats class the average final exam score is 55 with a standard deviation of 1.5. Find the test score that corresponds to a z score of 3.5?
In the city of Mcallen the probability of rain on new years is 37%. What is the probability that next new years day it will not rain in Mcallen?
The chemistry lab at a local college is staffed by 10 male doctoral students, 5 female doctoral students, 21 male undergraduate students, and 13 female undergraduate student. If a person is selected at random from the group find the probability that the selected person is an undergraduate male?
If two diced are rolled one time, find the probability of getting a sum greater than 9