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One kind of plant has only blue flowers and white flowers. According to a genetic model, the offspring of a certain cross have a 75% to be blue-flowering, and a 25% chance to be white-flowering, independently of one another. Two hundred seeds of such a cross are raised, and 142 turn out to be blue-flowering. Are the data consistent with the model?
A special test is given to people complaining of sever headaches. if someone has a brain tumor, the test is positive with a probability of .8 (80%).
A scatterplot shows a set of data points that are clustered close to a line that slopes down to the right. Which of the following values would be closest to the correlation for these data?
Suppose you were to cut up the directory and pull out one listing at random to contact.
What is the 95% confidence interval for the proportion of the population of employees who strongly dislike their current work experience?
Monitoring the ecological health of the Everglades-the bottom temperatures are recorded at the Garfield Bight station and the mean of 19.7 degrees C is obtained for 62 temperatures on 62 different days.
A random sample of 15 paired observations has a correlation of -.46. Can we conclude that the correlation in the population is less than zero? Use the .05 significance level.
How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution? Explain.
How to identify the subjects who are closest to the cutoff for the upper 2.5% and 5% of the scores and the lower 2.5% and 5% of the scores when looking at the z-scores?
At a state political rally, a spaker announced "we should raise test scores so that the students are above the state median". How would you analyze this statement?
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
Microsoft Excel was used on a set of data involving the number of parasites found on 46 Monarch butterflies captured in Pismo Beach State Park.
if 30 claims are selected, find the probability that 15 will contain 0 errors, 8 will contain 1 error, 5 will contain two errors and 2 will contain 3 errors.
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