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Historically, the proportion of adults over the age of 24 who smoke hs been estimated to be .30. You want to take a sample to estimatethe current proportion of adults over the age of 24 who smoke within 3% at 95% accuracy. When you completed the sameple you found that 114 of those adults sampled over the age of 24 smoke. Develope a 95% condience interval for the current porportion of adults over the age of 24 who smoke.
A software company wants to determine whether there is a relationship between their three sales offices and the sales of their software products. The actual sales results are
Calculate the appropriate test statistic to test the hypotheses related to the concern and test at 5% and 1% (indicate which test you are performing; show the hypotheses, the test statistic and the critical values and mention whether one-tailed or..
State the values of the coefficient of correlation and coefficient of determination correct to three decimal places
Given that Vacationer will travel less than 500 miles, Find out the probability that he/she will drive or take the Bus/Train?
Many times researchers preselect the value of alpha of .01 or .001. What are the factors that allow selection of either of those levels of significance?
What is the best estimate of the average tread life in miles for the entire population of these tires?
The estimated salary range is $4,500, the margin of error should be $100 and the desired level of confidence is 95%.
Your specific assignment for this week is to choose a type of quantitative data to gather from your own life. How many minutes does it take yo to get to work everyday.
As the price of oil rises, there is increased worldwide interest in alternate sources of energy. A Financial Times/Harris Poll surveyed people in six countries to assess attitudes toward a variety of alternate forms of energy
Is spine bone density is normally distributed in young women with a mean of 1.0 g/cm 2 and a standard deviation of .10 g/cm 2 , then how many young women out of 100 would you expect to have bone densities less than .85 g/cm 2 ?
Determine the mode for this distribution. Describe why you can't calculate the mean number of times using data in the table.
The following ANOVA summary data are the result of a regression with sales per year (dependent variable) as a function of promotion expenditures per year (independent variable) for a toy company.
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