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Students in the RCOB are given an "exit exam" close to graduation that measures the amount ofknowledge they were supposed to have gained while here. Suppose these students are administered thetest upon admission to college and then take it again close to graduation. Describe in two or threesentences how you could test whether their knowledge improved. Hint: What kind of t-test is this?
Scorekeeper, Inc., manufactures stadium scoreboards. Illustrates the demand for Scorekeeper's scoreboards over the past 25 days. The mean of the daily demand is 6 units. Calculate the standard deviation for daily demand. Assume in this case that th..
John Smith has developed the following forecasting model: Y=36+4.3X where Y=Demand for K10 air conditioners
1) A random sample of customer order totals with an average of $78.25 and a population standard deviation of $22.50. Calculate a 90% confidence interval fro the mean, given a sample size of 75 orders
The average weekly earnings of the plumbers in a city is (u=$750) with a standard deviation of (SD=$40). Assume that we select a random sample of [n=65 plumber], what is the proability that the sample mean [x bar] will be greater than $740 or greater..
What is the standard error in the difference between means - What statistical test should be used to analyze the data?
Let X denote the mean of a random sample of size 128
The number of gallons of paint that Home Depot sells in a given day is normally distributed with a mean of 160 gallons and a standard deviation of 55 gallons (I realize that the distribution is probably different for weekends compared to weekdays, bu..
Let p be the population proportion for the following condition. Find the point estimates for p and q. A study of 4728 adults from country A found that 2377 were obese or overweight. The point estimate for p, phat is ? The point estimate for q, q hat..
Use the information in the table to determine the percentages for each interval. Do the data below show a linear relation, non-linear relation, or no relation at all
The average farm in the United States
What are the two independent variables in this study? What is the dependent variable? 2.Why is a two-way between-subjects factorial ANOVA the correct statistic to use for this research design?
Independent-Samples T-Test Computations, You obtain the data shown below for 30 girls with anorexia who were treated with psychodynamic therapy. These values can be interpreted as described in Week 6: Assignment 2.
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