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The door frames used in an industrialised building system are of one standard size. If the heights of adults are normally distributed, men with a mean of 1.73m and standard deviation of 0.064m and women with a mean of 1.67 and standard deviation of 0.050m; then what proportion of men will have a clearance of at least 13cm with a frame height of 1.83m? (You need to use the standard Normal Distribution table)
A 0.3196
B 0.68
C 0.4577
D 0.577
Hanna Properties specializes in custom-home resales in the Equestrian Estates, an exclusive subdivision in Phoenix, Arizona. A random sample of nine custom homes currently listed for sale provided the following information on size and price.
An investigator wants to estimate caffeine consumption in high school students. How many students would be required to ensure that 95% confidence interval estimate for the mean caffeine intake (measured in mg) is within 15 units of the true mean? ..
explain the differences between an observation and an inference. relative to what probability means how does this
The table on page 124 indicates XRAY was the only variable input into the equation and the model’s overall percentage correct was 75.47%. On page 125, STAGE was entered into the equation, but it looks like the model still correctly classified 75.47%...
the college board reported the following mean scores for the three parts of the scholastic aptitude test sat the world
comparing averages. suppose the national basketball association nba reports that the average height of basketball
1. a random sample of 16 size d batteries for cars yield a mean of 2.8 hours with standard deviation 1.3 hours.a find
Does the 99% confidence interval contain the actual population mean? If not, explain why not. What proportion of many similarly constructed confidence intervals should include the true population mean value?
If the sum of squares total is 800 and the sum of squares error is 170. What is the r-squared value?
Critically discuss some concepts behind variance analysis? Why is it important to test for variances in your data? Explain. How is variance analysis used in health care administration?
A pollster calls 500 randomly selected people and all 500 respond to her first question. Because the subjects agreed to respond, is the sample a voluntary response sample?
Obtain the simple linear regression equation, then analyze the residuals by (a) constructing a histogram
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