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What are some examples in the popular press of misuse of statistics?
What is the right tail percentile required to reject the null hypothesis?
A fair coin is tossed three times. Let X be the number of beads on the first tosses. Y number of heads on the last two losses.
The daily revenue totals for the next 30 days will be monitored. What is the probability that the mean daily revenue for the next 30 days will be between $7000 and $7500?
Suppose you start with $10 and repeatedly bet $2 (instead of $1), having probability p of winning each time. Suppose your goal is $100, i.e.
What are the building blocks that make up our genes? What are the three components of the building block?
(a) If A and B are disjoint, P(A) = 0.4 and P(B) = 0.5, then P(A OR B) = 0.9.
Determine the average, sample variance, and sample standard deviation for these data.
ACT scores are approximately Normally distributed with a mean of 21 and a standard deviation of 5, as shown in the figure.
Explain why it is not appropriate to generalize these results to all drivers, or even to all drivers who visit cnn.com. What is the problem with this method of data collection? Is the variable in this study quantitative or categorical?
The numbers are in thousands of dollars. Make a histogram of the costs, and describe the distribution. If there are any outliers, identify the school(s).
From a previous study, the standard deviation of the ages is known to be 3 years.
Find the probability of at least 1 hit in 4 tries in 1 game. Assuming that this batter gets up to bat 4 times each game, estimate the probability of getting a total of at least 56 hits in 56 games.
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