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On the Hypothesis Testing Worksheet, all you need to do is write the null and alternative hypotheses for each situation.
The Environmental Protection Agency (EPA) is testing tap water in one community. If they find evidence that the average level of lead is greater than 15 parts
If the person plays the machine 500 times. Find the probability of winning 30 times use the normal approximation for the binomial distribution.
What is the probability that her password is “k9”? Would this password be effective as a deterrent against someone trying to gain access to her computer?
A pharmaceutical company develops a new drug that helps obese patients who are not currently diabetic avoid contraction of diabetes.
Find the probability that the selected subject is not pregnant, given that the test was negative.
The time between arrivals of customers to a gas station pump is given by the following probability distribution.
A box contains four red, three blue, and six green marbles. One marble is randomly selected from the box. Find the probability that the selected marble.
The percent of hospitals in Region 3 of the northwestern United States that reached maximum occupancy at least once in January 2015 was 82%.
Eleven percent of the products produced by an industrial process over the past several months fail to conform to specifications.
If you toss a die twice, what is the sample space if you want to restrict the results to only the ones where adding the results of the two throws together
Find the probability of getting two red marbles when two are selected if the first is not replaced before the second selection is made.
In a waiting line model situation, arrivals occur around the clock at a rate of six per day, and the service occurs at one very three hours.
Analyze your survey data in SPSS using descriptive statistics mean, standard deviation, mode and variation, for categorical data use frequencies and percentage
Two-thirds of the girls have brown eyes. What is the probabiliy that a randomly selected child is a brown-eyed girl?
A manufacturer wants to increase the shelf life of a line of cake mixes. Past records indicate that the average shelf life of the mix is 116 days
Fourth, for the class of investors below, explain which investment vehicle they are likely to choose based on its risk profile stock, corporate bond.
A company is researching the effectiveness of a new website design to decrease the time to access a website
ABC producing precision ball bearings. It is important that the diameters be as close as possible to an industry standard.
At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, "You can average $89 a day in tips."
The vice president of advertising is interested in the order of popularity of the color choices by customers during the first month of sales.
Using the z table in Appendix B, calculate the following percentages for a z score of -0.45
Fran and Ron play a series of independent games. Fran's probability of winning any particular game is 0.6 (and Ron's probability of winning is therefore 0.4).
This test is administered to one athlete, and the test is positive for steroids. What is the probability that this person actually used steroids?
What is the probability that the first individual to whom measure is given is not truly depressed if not diagnosed as depressed.