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The spread in the annual prices of stocks selling for under $10 and the spread in prices of those selling for over $60 are to be compared. The mean price of the stocks selling for under $10 is $5.25 and the standard deviation is $1.52. The mean price of those stocks selling for over $60 is $92.50 and the standard deviation is $5.28. Compute the coefficients of variation.
Relative dispersion in stocks under $10
Relative dispersion in stocks over $60
Would the correlation be greater, smaller, or about the same if you calculated the correlation between the weights of individual men and their heights (rounded to the nearest inch)? Explain your answer
1. What is the purpose of a directional control valve? 2. What is a check valve, and what does it accomplish?
Summarize the observed counts by creating a table similar to Table.- For the 143 women, find the percentage responding in each category for how they felt about their weight.
Verify that it is appropriate to use the confidence interval method based on the Central Limit Theorem for this problem.
The three models for auction price (y) have R2 and s values, as shown in the table. Based on this information, which of the three models would you use to predict red Bordeaux wine prices? Explain.
Your agricultural firm is considering the purchase of some farmland, and an indication of the quality of the land will be helpful.
1. you have obtained a sub-sample of 1744 individuals from the current population survey cps and are interested in the
Perform the appropriate hypothesis test to determine if the company can conclude that the average has fallen to less than 750. Use an alpha of .05.
The overhead reach distances of adult females are normally distributed with a mean of 197.5 cm and a standard deviation of 7.8 cm
Find a 95%confidence interval for the population mean, using the formula or technology.
suppose that a health expert has claimed that 17 of college students smoke cigarettes. to investigate this claim
Standard deviations differ, and speculate on the possible meaning of these differences, presuming that they are representative of U.S. governors and large corporations' CEOs in general.
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