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Let's work with a really idealized normal distribution. We'll pretend that American 12-year-old boys have an average (mean) weight of 100 lbs. The standard deviation (sigma) of the population is exactly 10 lbs. What is the value of weight (x) in which only 9% of the population is above (i.e. cuts off the top 9% of the curve)? Your answer to one decimal place is _____ lbs.
Consider different types of qualitative data collection and analysis methods and the ways in which they can support business decision making and strategies.
Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
Use this information to compute a 95% confidence interval for average number of credit cards carried by students.
When is regression used? What are the assumptions of Linear Regression? What is correlation? How does it differ from regression? What is the interpretation of the correlation coefficient?
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
Utilizing Excel data analysis calculate t distribution also deduce the result. Study of variance is used to investigate if there is a difference in the mean mileage of the three cars.
Detremine the mean, standard deviation, and variance for this frequency distribution.
The standard deviation was 2. At α = .10, is the number of years' experience of the taxi drivers really less than the taxi company claimed?
An instructor claims the average time to take a statistics test is greater than 39 min. As, if a sample of 33 students took 43 min. is the instructor's claim true?
The Rio-River Railroad, headquartered in Santa Fe, New Mexico, is trying to devise a method for allocating fuel costs to individual railroad cars on a particular route between Denver and Santa Fe.
Critically discuss how you can apply the concept and method of interval estimation to help you solve some of the problems in a regularly accounting department. Give a few examples.
A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.
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