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Annual salary plus bonus data for chief executive officers are presented in the Business-Week Annual Pay Survey. Apreliminary sample showed that the standard deviation is $675with data provided in thousands of dollars. How many chief executive officers should bein a sample if we want to estimate the population mean annual salary plus bonus with amargin of error of $100,000? ( Note: The desired margin of error would be E ? 100 if the data are in thousands of dollars) use 95% confidence?
Interpret the coefficient of correlation (i.e., r) for a given scatter plot
Explain briefly why Hite's sampling method is nearly certain to produce a strong bias. Are the sample results cited (91% and 70%) much higher or much lower than the truth for the population of all American women?
How many people were polled?
question 1 a package delivery service claims that no more than 5 percent of all packages arrive at the address late.
The untreated population mean (those who did not receive the new teaching method) on the exam was p = 100. Using a two-tailed test and a = .05, test to see whether the scores on the math exam for those using the new teaching method was significant..
Explain the methodology you will use to answer the question you posed. Your explanation should include answers to the questions - What is the variable of interest?
knowledge of binomial confidence intervals
What is the correlation coefficient and do the data provide sufficient evidence to conclude that the number of years of study and test score are linearly positively correlated? Use α = 0.01
Consider a machine that fills soda bottles.
the electric power consumed each month by a chemical plant is thought to be related to the average ambient temperature
Describes a positive linear relationship between X and Y
What is the reality of the use of e-learning from the perspective of students of the First Level in the Department of Management Information Systems at University of Hail
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