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About how large a sample is needed to test the hypothesis of equal probabilities so thatP(type II error)=0.05 whenπ1 = 0.40 andπ2 = 0.60, if the hypothesis is rejected when the P-value is less than 0.01?
Develop hypothesis, conduct analyses as you deem necessary, and prepare a page report of your findings. Papers will be evaluated in terms of their accuracy of analysis and interpretation, completeness, and quality of writing.
Construct a confidence interval for the mean length of the carrots using Gro-Haut circumstances and what is the probability of a puck being shot at speeds in between 82 and 96 mph?
June Walker is the Director of the Annual Fund for Marine Life University. She asks her analyst to study the giving patterns of the alumni of the School of Marine Sciences.
a light fixture contains 2 light bulbs. the lifetime xi of each bulb is exponentially distributed with a mean of 200
A newspaper reports that the gover- nor's approval rating stands at 65%. The article adds that the poll is based on a random sample of 972 adults and has a margin of error of 2.5%. What level of confidence did the pollsters use?
Thirty-five percent of the Democrats and 70% of the Republicans favor the bill. The bill needs a simple majority to pass. Using a probability tree, determine the probability that the bill will pass.
An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is know to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000.
q1 can you describe a data set for which one would one would prefer to use the median rather than the mean?q2 can you
The management of a regional bus line thought its cost of gas might be correlated with its passenger/mile ratio. Comment on the data and correlation matrix below.
Estimate the number of homes in the $150,000 up to $200,000 class. About how many homes sold for less than $225,000?
a study of 24 graduates of four-year colleges revealed the mean amount owed by a student in student loans was 14381.
Burnwood Tech plans to issue some $60 par preferred stock with a 6% dividend. A similar stock is selling on the market for $70. Burnwood must pay flotation costs of 5% of the issue price.
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