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In our example of research on lipstick, where E = $2 and S = $29, what sample size would we require if we desired a 99 percent confidence level? What about if we keep the 95 percent confidence level, but decide that our acceptable error is $4?
If they wish to estimate the population proportion within 0.03 and use 95 percent confidence, what is the largest random sample that they will need?
What percentage of items will weigh between 6.4 and 8.9 ounces?
When would you use a one- or two-sample hypothesis test? Provide examples. What are the differences between dependent and independent samples? Provide examples.
He came to work at 8:00 and began to make calls. By 11:00 a.m., his survey was done. Don't discuss what is not said. Discuss what is wrong with what is said.
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
In an effort to estimate the mean amount spent per customer for dinner at a major Atlanta restaurant, data were collected for a sample of 49 customers. At 95% confidence, what is the margin of error (to 1 decimal)?
What is the value of sample mean? If the interval represents 90 % confidence interval, what would the 99 % confidence interval be?
You are interested in knowing if there is a statistical difference in driving speeds between Day 1 and Day 10. Which statistical test would be appropriate? Why?
Please show work and provide excel formulas for plots so that I can understand how to do the assignment. The density function of a continuous random variable X, the total number of hours, in units of 100 hours, that a family runs a vacuum cleaner ove..
Is there a statistically significant difference between the bowling averages of male nurses and those of businessmen, if last year's league play produced the following data
Calculate a four-quarter weighted moving average for the number of America Online (AOL) subscribers for the nine quarters of data. The data are reported in thousands.
Evaluate the value of the F statistic for Devices- I plan an experiment to test the latest conflicting diet programs. The factor for Diet will involve three different levels: low fat, low carbohydrate, and low calorie. The other factor will involve..
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