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A sample of 57 homes in a subdivision revealed that 31 were ranch style (as opposed to colonial, tri-level, or Cape Cod).
(a) Construct a 98 percent confidence interval for the true proportion of ranch style homes. (Round your answers to 4 decimal places.)
A 50.0 ball of clay traveling east at 8.00 collides and sticks together with a 40.0 ball of clay traveling north at 8.00. Illustrate what is the speed of the resulting ball of clay?
Journalize the following selected transactions completed during the current fiscal year:
Consider the stock of Davidson Company, which will pay an annual dividend of $2 one year from today. The dividend will grow at a constant annual rate of 5 percent
Diagram an angiosperm seed. Identify the tissue or cell that each part is derived from. Distinguish between diotyledonous and monocotyledonous seeds; albuminous and exalbuminous seeds. Explain what happens in ripening and after-ripening.
A retailer finds that the demand for a very popular board game averages 100 per week with a standard deviation of 20. If the seller wishes to have adequate stock 95% of the time.
White eyes can be due to the combination of two mutations which eliminate both pigment types normally found in the Drosophila eye. assume that your flies have the two which are autosomal, recessive, and not linked.
The skis have a thrust of 200. Sam's speed at the bottom is 43.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
A sample of gas originally at 37.2oC and 1.25 atm pressure in a 3.4 L container is allowed to expand until the pressure is 0.73 atm and the temperature is 14.9oC.
Find the number z such that 22% of all of observations that are less than z in a standard observations from a standard normal normal distribution is 0.98.
Lillian (mass 32.0 kg) standing on slippery ice catches her leaping dog (mass 15 kg) moving horizontally at 2.0 m/s. Evaluate what is the speed of Lillian and her dog after the catch?
Write a statistical laboratory report using the guidelines in the assigned article, "How to Write a Statistical Report."
This distribution is positively skewed. The standard deviation of the population is not known.
A random sample of 56 people measured accuracy w/ positive errors representing watches that are ahead of the correct time and negative rep. those behind the time.
Compare and contrast random selection and random assignment. Be sure to include a discussion of when you would want to do one or the other and the possible consequences of failing to do random selection or random assignment in particular situation..
Determine the following areas under standard Normal distribution curve.
The director of golf for the Links Group wishes to study the number of rounds of golf played by members on weekdays. At the .05 significance level, is there a difference in the number of rounds played by day of the week?
The average stock price for companies making up the S&P 500 is $40, and the standard deviation is $10. Assume the stock prices are normally distributed. What is the probability a company will have a stock price less than $33.
An exam consists of 10 true or false questions. If a student guesses at every answer, what is the probability that he or she will answer exactly six questions correctly? (Round the answer to three decimal places)
Choose a variable (such as number of daily admissions at a local theater or number of miles students have to commute daily to get to their college.) Before collecting the data, decide what a likely average might be, then complete the following:
Test the teachers hypothesis that there is a significant difference between the pre and post tests.
Studies have shown that humans complete a 1 mile run in an average of 12.2 minutes. There is a separate group of 30 who complete a 1 mile run with an average of 8.67 minutes with a standard deviation of 0.33 minutes.
Determine the probability that the project will be completed in 70 days or less.
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