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Question: The birthday problem What's the probability that in a randomly selected group of 30 unrelated people, at least two have the same birthday? Let's make two assumptions to simplify the problem. First, we'll ignore the possibility of a February 29 birthday. Second, we assume that a randomly chosen person is equally likely to be born on each of the remaining 365 days of the year.
(a) How would you use random digits to imitate one repetition of the process? What variable would you measure?
(b) Use technology to perform 5 repetitions. Record the outcome of each repetition.
(c) Would you be surprised to learn that the theoretical probability is 0.71? Why or why not?
The mean of a standard normal probability distribution.
Some assembly required. A company that markets build-it-yourself furniture sells a computer desk that is advertised with the claim less than an hour.
suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
In a study of the lizard Sceloporis occidentalis, researchers examined field-caught lizards for infection by the malarial parasite Plasmodium. To help assess the ecological impact of malarial infection, researchers tested 15 infected and 15 noninf..
Use the CPI to calculate the estimate at completion (EAC) for this project. Is the project performing better or worse than planned?
Suppose that 70% of the participants who are referred to an orthopedist who specializes in PS will actually have the condition. If a test score of ≥ 1.86 ms is obtained for a participant, then what is the probability that the person has PS?
A personnel office is gathering data regarding working conditions. Employees are given a list of five conditions that they might want to see improved. They are asked to select the one item that is most critical to them.
Perform a one-way ANOVA on the data provided. You can either use the One-way ANOVA calculator that I provided or you can perform the analysis in Excel
You are playing a game of chance in which four cards are drawn from a standard deck of 52 cards. You guess the suit of each card before it is drawn.
1. the ritz-carlton hotel used a customer opinion questionnaire to obtain performance data about its dining and
If the standard deviation of the strength of the vendor's bottles is 8 kg/cm2, with the mean of 310 kg/cm2, what are the chances of seeing what the bottling company observed?
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