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Mathematics, 11.03.2021 03:30 sirinapadeangel
Part 1: Binomial Probabilities
A survey said that 3 in 5 students enrolled in higher education took at least one online course last fall. (Remember that we converted the ratio into a percentage to find the probability that a student took an online class.)
Choose 4 students at random. Use the binomial table (found at the end of packet 2 or on page 636 of your etext) to find the probability that
a) All 4 students took online courses
b) None of the 4 students took online courses
c) At least 1 of the 4 students took an online course
Include in your discussion what you used for n and p in the binomial distribution and any calculations you used.
Part 2: Use the Standard Normal Table (attached to the end of packet 2).
To qualify for security officers’ training, recruits are tested for stress tolerance. The scores are normally distributed, with a mean of 62 and a standard deviation of 8. Find the probability that a randomly selected recruit has a score between 64 and 72. Include a detailed description of how you calculated the probability (not just the final answer).
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Part 1: Binomial Probabilities
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