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The time it takes a cell to divide (called mitosis) is normally distributed with an average time of one hour and a standard deviation of 5 minutes.
What is the probability that a cell divides in less than 45 minutes?
What is the probability that it takes a cell more than 65 minutes to divide?
By what time have approximately 99% of all cells completed mitosis?
SAT Math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 116. a) what percentage of SAT scores are between 399 and 631?
Analyze the data in the normal fashion using SPSS
a local university administers a comprehensive examination to the recipients of a b.s. degree in business
suppose you estimate a model obtaining wage 0.620 0.506 times educ 2.27 times female were wage is measured in
The owner of a small computer store personally sells one computer per week on the average. Use the Poisson distribution to find the probability of randomly selecting a week in which she personally sold three computers.
Assume that these distributions are distributed as normal random variables with the means and standard deviations given previously. Find the probability that the return for common stocks will be greater than 8%.
Describe appropriate treatment means μ1, μ2 and μ3. After that Test for statistically significant differences between these treatment means. Set α = 0.05.
Darnell lives in an area where labor is plentiful and locations for start-ups are relatively cheap. He is also confident that he can find start-up funds for a graphic arts business. As he evaluates the opportunity for his proposed venture, wh..
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
Determine 80% confidence interval for average weights of Allen's hummingbirds in study regions. Determine the margin of error?
The average stock price for companies making up the S&P 500 is $30, and the standard deviation is $8.20. Assume the stock prices are normally distributed.
james teaches a class of 300 students and only 6 have done their homework assignment which is due today. he calls on a
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