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A random sample of 300 executives out of 2500 employed by a large firm showed that 270 would move to another location if it meant a substantial promotion. Based on these findings, write a brief not to management regarding all executives in the firm.
Blockbuster is testing a new policy of waiving all late fees on DVD rentals using a sample of 10 randomly chosen customers.
An American put option to sell a swiss franc for dollars has a strike price of $0.80 and a time to maturity of one year. The volatility of the swiss franc is 10%
Research at the University of Toledo indicates that 50 percent of the students change their major area of study after their first year in a program.
At the .01 level of significance, is there sufficient evidence to conclude that a difference exists between the mean number of volunteer hours per week for male and female college students?
According to a recently conducted survey, 90% of all drivers in Trinidad and Tobago claim to consistently driver over the legal speed limit.
Compute the number of French fries that would have to be sampled and measured to be 98% sure of being within 0.4 cm of the true mean.
Find the sample size for the 95% confidence interval used to estimate the population proportion.
What are the critical values for z on a one-tailed test if alpha = .01? .001? What would the critical values be at both levels of significance if it was a two-tailed test?
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
To find the probability values in case of raw data, binomial, normal
The chart at the right. Does this sample indicate that songs classified as dance music have lower beats per minute than the songs ranked on a Top 200 list?
Produce a printout of the frequency tables, showing the total of both frequencies.
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