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What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1 in the following scenarios? (For each answer, enter a number. Round your answers up the nearest whole number.)
(a) a preliminary estimate for p is 0.15
(b) there is no preliminary estimate for p
The correlation between height and weight is r = 0.40 for 12th-grade male respondents (n = 1501) in a survey done in 2003 by the U.S. Centers for Disease.
Create, using SPSS, a frequency distribution and an appropriate graphical display for your variable given its level of measurement.
Find the implied volatility of the following European call. The call has four months until expiry and an exercise price of $100. The call is worth $6.51 and the underlying trades at $101.50. Assume the risk free interest rate is 8% per annum.
A random sample of 15 items is taken, producing a sample mean of 2.364 with a sample variance of .81. Assume x is normally distributed and construct a 90% confidence interval for the population mean. Write a statistical hypothesis, Describe a null ..
Suppose that the correlation between the scores of students on Exam 1 and Exam 2 in a statistics class is r = 0.7. One way to use r is to compute
Make a 90% confidence interval for the difference in the population proportions for the two groups of people.
The bus averaged 40 mph on the drive from Columbus to Athens but averaged 60 mph during the return trip. What was the average speed of the bus for the entire trip?
Suppose that a random sample of n observations is drawn from a t distribution with a degrees of freedom. Show that the asymptotic distribution
In a sample of 49 children selected randomly from one town, it is found that 8 of them suffer from asthma
What is the weighted average cost of capital for Foggy Futures Weather Forecasters? The firm is in the 25% tax bracket. The optimal capital structure is listed
Find its marginal revenue function?
In the nineteenth century, women's use of bound feet (China), white face paint (Japan), and corsets (Western Europe) are examples of which of the following?
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