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The same monitoring of radio-collared lions over the years suggests that the overall proportion of stalks that are the crouching type is about 0.87. Do the data above provide evidence that for this population of lions the proportion of crouching stalks of wildebeests and zebras is greater than what was originally thought? Use alpha=0.05
An analysis of the final test scores in this class shows that the scores follow the normal distribution. The mean of the distribution is 75, and the standard deviation is 8. The professor wants to award an A to a student whose score is in the highest..
An urn contains white and pink balls. Six balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all balls drawn from the urn are white? ..
Suppose that the New England Colonials baseball team is equally likely to win any particular game as not to win it. Suppose also that we choose a random sample of Colonials games.
Prepare a report using the numerical methods of descriptive statistics presented in this module to learn how the variables contribute to the success of a motion picture.
Consider a sample of 148 small businesses. During a three-year period, 15 of 106 headed by men and 7 of the 42 headed by women failed. Let p1 be the proportion of businesses headed by women that failed. Let p2 be the proportion of businesse..
1. Does Steve need additional information from Iverstine and Walker? 1. Does Steve need additional information from Iverstine and Walker?
Way around B&W plots
question 1a busy landscaping supplies company sells wood chips for garden mulch. the mulch is sold by the cubic metre
Which of the approaches will you be most inclined to choose and why?
What is the aim of Ms. Gorman research?
Movie Budgets. How does the cost of a movie depend on its length? Data on the cost (millions of dollars) and the running time (minutes) for 29 films of 2005 are provided in the SPSS data set called Movie_budgets.sav (found on your class site..
Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at Allergy Institute did a study to determine the effects of washing the oil off within 5 minutes of exposure. A random sample of 1000 people with known all..
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