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The scores on an exam are posted and the mean is 75 with a standard deviation of 5. Assuming the scores follow a normal-shaped distribution, use the 68-95-99.7 rule to determine each of the following:
Ted scored an 80, what percent of students scored higher than Ted?
What percent of students scored between 60 and 90?
If 70 is passing, what percent of the students passed an exam?
Use a logistic regression to model the odds of death with hospital as the explanatory variable. Summarize the results of your analysis and give a 95% confidence interval for the odds ratio of Hospital A relative to Hospital B.
What percent of the Saturday deliveries would result in a customer receiving a free order?
Biometrics is a technology that helps identify people by facial and body features and is used by banks to reduce fraud. If in 15 trials the machine correctly.
for the dataset test if there is a difference in the variances of the passes completed by the two players using ? 0.01
As a counselor in the field of addiction, you are interested in researching if online gambling is becoming more prevalent. You decide to conduct research to compare online gambling to gambling in public places such as casinos.
when using the normal approximation to the binomial what is the standard deviation for a binomial probability
Assuming that his list represents a simple random sample of those persons who could be called, what is the probability that Albert will meet or exceed his quota?
If the process standard deviation is known to be σ = 0.25 grams, construct the 95% confidence interval for μ = the average amount of cheese being injected by the machine.
State the null hypothesis and the alternative hypothesis that we would use for this test.
there are 4 unrelated parts to this question. justify your answersa i if 8 identical blackboards are to be divided
suppose we select an srs of size n 100 from a large population having proportion p of successes. let p be the
A production line manager, J, is trying to design a manufacturing line, using the machines that her company already has. Based on the historical records
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