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Anna, a language major, took final exams in both French and Spanish and scored 83 on each. Her roommate Megan, also taking both courses, scored 77 on the French exam and 95 on the Spanish exam. Overall, student scores on the French exam had a mean of 81 and a standard deviation of 5, and the Spanish scores had a mean of 74 and a standard deviation of 15.
a) To qualify for language honors, a major must maintain at least an 85 average for all language courses taken. So far, which student qualifies?
b) Which student's overall performance was better?
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
You are choosing between the following investment strategies: Invest $200 in stock A. Stock A costs $20 per share. Expected yield per share of stock A is $2, and the variance of yield per share is 9 ($-squared). Which investment strategy has the hi..
conduct a hypothesis test to determine if the proportion of business students at bayview university who were involved
Suppose you want to test the claim that a mean is greater than 25.6, where the population standard deviation is known. Given a sample size of n = 44 and a level of significance of when should you reject?
the total blood cholesterol concentrations in mgdl are shown below for a random sample of six people. in the table
The availability of venture capital provided by big boost in funds available to companies recent years. According to Venture Economics, 2,000 venture capital disbursements were made in 1999.
If. for practical reasons. you had to choose only one model to use to set the expiration dates, which would it be? (There is no health risk involved. It's a flavor quality thing.) Why would you choose this model?
a construct a 95 confidence interval for mu1 213872 -- standard deviation 69261 the expected price of real estate in
At a certain University, it was found that historically, 10 percent of Ph.D. students fail the program. In a sample of 5 randomly selected Ph.D. Students, find the probability that 3 would fail.
Find for each country expressions for the equilibrium price and firm profits and quantity under the assumption that no trade between the two countries occurs.
What key factors of a business situation indicate the need for simulation
Suppose that distinct integer values are written on each of 3 cards. These cards are then randomly given the designations A, B, and C. The values on cards A and B are then compared. If the smaller of these values is then compared with the value on..
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