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Eric has computed that it takes an average (mean) of 17 minutes with a standard deviation of 3 minutes to drive from home, park the car, and walk to his job. One day it took Eric 21 minutes to get to work. You would use the formula for transforming a raw score in a sample into a z-score to determine how many standard deviations the raw score represents. Since his "score" is 21, you would subtract the mean of 17 from 21 and divide that result (4) by the standard deviation of 3. The z-score of 1.33 tells you that Eric's time to get to work is 1.33 standard deviations from the mean.
A business owner decides to use a binomial distribution to solve one of his problems.
How large a sample should be taken if the desired margin of error E is:
How strong is the evidence against the company's claim? Based on these data, the P -value of the appropriate test
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
For all questions, clearly explain/show your answers. For the Analysis section, justify your answers with the appropriate graphs, statistics, equations, etc.
Table shows the smoking habits of group college students. If student is selected at random, determine the probability of getting someone who is man or a woman.
What is the sample space for this process and evaluate the variance of the intelligence scores
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
Write down the advantages and disadvantages of using computer software for decision making.
What is the probability that the cereal would be high fiber? In other words, what is P (high fiber)?
What kind of probability uses sample spaces to find out numerical probability that event will happen?
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