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Problem based on combinatory.
The state of Virginia's license plate has three letters followed by four digits. Assuming that any letter or digit can be used, how many different license plates are possible?
Explain the logic of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, deviation scores, and hypothesis testing);
If the payoff from outcome A is twice the payoff from outcome B, then the ratio of these utilities will be.
A sample of 25 students enrolled in the university indicates that X (bar) = $315.4 and s = $43.20.
Given that Vacationer will travel less than 500 miles, Find out the probability that he/she will drive or take the Bus/Train?
Karefree State University has an enrollment of 18,000. Researchers took a sample of 900 and found 477 students wanted a Field Hockey team. Construct the 95% and 99% Interval estimates for the population proportion.
Is it necessary to assume a normal distribution on the population to estimate the value of the mean spending per day? Explain.
The heights in centimeters of 5 students are: 165, 175, 176, 159, 170. The sample median and sample mean are respectively:
At.05 level of significance, is there evidence to propose that mean life length of the batteries manufactured by this manufacturer is more than 400 hours?
If statistically significant, do you think the difference is large enough to be important?
Determine the probability of choosing at random license plate which ends in the even number?
If a single test is run and indicates that oil is present, what is the revised probability that oil is actually present?
What can we say about the probability distribution of x? Is it approximately normal? What are the mean and standard deviation?
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