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In the eelpout (Zoarcesviviparus), a population found near a pulp mill in Sweden exhibited a biased male sex ratio. If the sex ratio is 135 males: 100 females, and we sample 8 fish at random from the population, what are the probabilities of obtaining 0 males, 1 male, 2 males, and so on, up to 8 males? What is the expected value for this distribution? What is the expected variance for this distribution?
Interpret the three confidence intervals in terms of whether there is a significant difference between the mean of the sample and a hypothesized mean of 150.
There is one Grand Prize of $500, one First Prize of $100, and 8 Second Prizes of $50. Find the expected winnings per ticket sold.
suppose that certain tool bits are package 20 to a box and the following sampling plan is used. a sample of three tool
In ANOVA, what does F=1 mean? What are the differences between a two sample t-test and ANOVA hypothesis testing?
Determine probability of waiting less than 12 minutes between successive speeders. By using cumulative distribution function of X.
the standard deviation of a normal random variable is 20. if a sample of 225 is selected out of a large population what
suppose that a stat150 student randomly sampled 500 american high school students to study sat math scores. the math
data were collected on gpa and number of facebook friends for students in a small statistics class. some summary
a sample space s contains four sample points e1 e2 e3 e4. list all possible events in s including the null
To determine her blood pressure, Carolyn divides her day into three parts; morning, afternoon, and evening. She then measures her blood pressure at 4 randomly selected times during each part of the day. What type of sampling is used?
Here is a two-way table showing enrollment data for full-time undergraduate students in U.S. colleges and universities. The entries are thousands of students:
a random sample of 100 pumpkins is obtained and the mean circumference is found to be 40.5 cm. assuming that the
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