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The bacteria Escherichia coli are commonly found in the human bladder. Suppose that 3000 of the bacteria are present at time t-0. Then t minutes later, the number of bacteria present can be approximated by:
N(t) = 3000(2)^t/20.
How many bacteria will be present after 10 min? 20min? 30 min? 40 min? 60 min?
Questions based on binomial distribution, variance of the binomial distribution, discrete random variable and continuous random variables.
We wish to compare the average sales in two shops, to see if the population mean of the first one is higher than the second one. One shop had 100 sales averaging $94, with a standard deviation of $40.
A researcher plans a study in which a crucial step is offering participants a food reward. It is important that the three food rewards be equal in appeal.
Determine the probability that no female are hired. Determine the mean and standard deviation of X.
What is the probability that the variable will take the value 2? What is the mean of the distribution?
Do the thinner cans appear to be strong enough so that they are not crushed when the top lids are pressed onto the sides?
A random selection of accounting firms from three regions is taken and they are asked to state the starting salary for a new accounting graduate. Do a one-way ANOVA to analyze these data using a 1% level of significance:
Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.
In addition, the cruise line has decided to plan for an additional 25% more meals than bookings. Formulate the appropriate linear program and solve using Excel Solver. Show your Work in Excel.
martindate were tester which can compare two materials in sigle run, weights losses from seven runs. Examine these data by creating the 90% confidence interval for difference of means. Define your assumption.
To test the hypothesis that students who finish an exam first get better grades, Professor Barker kept track of the order in which papers were handed in.
Many law enforcement agencies use voice-stress analysis to help determine whether persons under interrogation are lying. If the sound frequency of a person's voice changes when asked a question
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