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According to a recent article in Worth, the average price of a house on Marco Island, Florida, is $2.6 million.10 Assume that the standard deviation of the prices is $400,000.
A random sample of 75 houses is taken and the average price is computed. What is the probability that the sample mean exceeds $3 million?
a random sample of 625 sat scores has a mean of 1500. assume that sat scores have a population standard deviation of
Time and cost word processing in the first two columns of table below we repeat our data on time and cost for a sample of 5 word processing jobs. Cost($) Time (hr) y x 125 5 175 7 325 15 425 20 475 22.5
Comparing tropical flowers. Example 25.1 (text page 623) describes a study of the lengths of three varieties of the tropical flower Heliconia. Table 25.1 gives the data. One-way ANOVA gives strong evidence (F =259.12, P
Find the value of the annuity after 15 years and find the interest.
(a) Carry out a maximum likelihood factor analysis using the correlation matrix of Table 6.17. How many common factors are retained using (i) likelihood ratio chi-squared test, (ii) Akaike's criterion, and (iii) Schwartz's criterion. What ..
Construct a 99% confidence interval for the standard deviation, σ, of the replacement times of all washing machines of this type.
if the distribution is approximately normal the t-test is a more powerful test about the central tendecy of the
I need to collect both primary and secondary data regarding the research issue on salary of baseball players. (the aim of this research is to verify whether the salary of the baseball players varies with respect to the state)
a new muscle relaxant is available. researchers from the firm developing the relaxant have done studies that indicate
Your company produces a product in a market that has grown by 10% per year for the past 15 years. According to your estimate, the market is currently at 30% of saturation. Predict sales for the next 20 years.
Critically discuss the difference among strategic, long-term, and short-term objectives? What is the relationship between objectives and goals? What are examples of this relationship?
Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
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