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What conditions must be met before constructing a confidence interval for a proportion? Be sure to be specific with regard to whether you use p or p-hat in your check.
Develop a 95% confidence interval for the proportion of the population of adults who feel customer service is better today than it was 2 years ago.
suppose 60 of the people in town will get exposed to flu in the next month. if you are exposed and not inoculated then
What is the slope? What is the Y-intercept? Interpret the slopes and their meaning.
A random sample of 1440 current job applicants results in 61 failures (based loosely on data from the American Management Association).
Calculate the mean, median, and standard deviation for ounces in the bottles and construct a 95% Confidence Interval for the ounces in the bottles.
a random sample has been taken from a normal distribution. output from a software package is given belowvariable xn
The mean is 15.8 tons. the sample standard deviation is 5.0 tons. what is the 95 percent interval for the population mean?
The manager is concerned that sales are slipping, after taking into account the average value of sales for four consecutive Saturdays being $4800.
the professor plots a histogram of these several proportions. Should a Normal model be used to represent the sampling distribution of the proportion of tails?
The sample showed an average of 56.2 miles per gallon with a standard deviation of 5 miles per gallon. With a 0.05 level of significance, do you accept or reject the manufacturer's claim.
suppose x is uniform on 01 and y x. find the joint distribution function of x and
Demostate the use of appropriate tools for converting data into meaningful information and select, defend and use appropriate statistical tools for analysis of data and interpretation.
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