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Develop a scatter diagram with ten dots for each of following:
Four research participants take the test of manual dexterity (high scores mean better dexterity) and anxiety test (high scores mean more anxiety). The scores are given below:
A real estate agent in costal area of Georgia wants to compare the variation in selling price of homes on oceanfront with those one to 3 blocks from ocean.
Suppose that risk-free rate is 6% and the expected return on market is 13%. Find out the required rate of return on stock with beta of 0.7?
Assume you're the money manager of $4 million investment fund. The fund consists of four stocks with following investments and betas:
Preferred stock returns Bruner Aeronautics has perpetual preferred stock outstanding with the par value of $100. The stock pays the quarterly dividend of $2, and its current price is $80. Find out
Time Spent using e-mail each session is normally distributed, with µ = 8 minutes and σ = 2 minutes. If you choose a random sample of 25 sessions, Find out the probability that the sample
The manager of a paint supply store desires to estimate actual amount of paint contained in 1 gallon cans purchased from the nationally known manufacturer. Make a 99% confidence interval estimate of
If the manager of the paint supply store wants to estimate mean amount of paint in a one gallon can to in 0.004 gallon with 95% confidence and also supposes that the standard deviation is 0.02 gallo
Find out the ANOVA tables for following regressions: (1) dry weight (Y) on age (X), and (2) log10 dry weight (Z) on age (X). The following results will be helpful in minimizing computation time:
Complete the ANOVA table shown in accompanying computer output. Perform the F test for significance of straight line regression of Y on X and interpret your results.
Analyze the five pairs of data points given in following table. Show by calculation that, for the straight -line regression of Y on x, β1= 0
A random sample of 50 clinical trials describes the mean time to "cure" of 730 hours with standard deviation of 60 hours.
Three groups of senior citizens with the different education levels are surveyed to find whether or not they're confused by new medicare drug benefit plan.
A job training program trained thousands of participants. After training was completed, a random sample of 64 of these participants showed that only eight had retained jobs in which they were placed
How large sample would be required? What sample size would be needed to make that estimate in plus and minus 0.03 and with 95% confidence?
A sociolinguist claims that at least 45% of all college graduates are functionally illiterate (according to well known accepted standards).
A manufacturer of mechanical widgets claims that his widgets have average useful life of the 8,000 hours of continuous use before failure.
Summary results showed that 280 of mid country residents were dissatisfied with their lives, while 332 of the coastal residents indicated dissatisfaction. Using a 5% level of significance, can
A pilot survey of ages of country residents is taken and initially shows and average age of 33.5 years with the standard deviation of 5.2 years.
Find out whether each of distributions given below represents a probability distribution. Justify your answer.
Find out the probability that x = 2 by using the binomial tables. Employ the normal approximation to find out the probability that x = 2. Describe all work.
The diameters of oranges in a certain orchard are normally distributed with a mean of 7.3 inches and a standard deviation of 0.80 inches. Describe all work.
Suppose that the population of heights of female college students is approximately normally distributed with the mean µof 68 inches and standard deviation σ of 2.75 inches. Find out t
What conditions should be met in order to use the normal distribution to approximate the binomial distribution? How does the standard normal distribution differ from the normal distribution?