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Suppose you have variables X and Y, and you attempted to regress Y on X (i.e., predict Y from X). If you add 10 to the value of every Y data point, what will happen to the equation of the best fitting line through your points?
A) The intercept would increase by 10, but the slope would not change
B) The Slope would increase by 10, but the intercept would not change
C) The slope and intercept would increase by 10
D) Neither the slope nor intercept would change
Assume the cholesterol levels of adult American women are normally distributed with a mean of 190 mg/dL and a standard deviation of 26 mg/dL. What percent of adult women do you expect to have cholesterol levels at least 200 mg/dL?
1 assume that a radiologist group practice has the following cost structurefixed costsnbspnbspnbspnbsp
Construct a hypothesis test to determine whether the average weight of a Smoky Bear moving van is more that 12,000 lb. Us a 5% level of significance.
Scientific poll based on 400 hospital patients has just been performed. Determine the probability that at least 70 patients will not be satisfied with after-surgery care?
your factory receives 3 lots of screws. there are 100 screws in lot 1 200 in lot 2 and 300 in lot 3. lot 1 contains 1
Using your own experience, estimate the probability the local weather forecast is correct. Explain the rationale behind your estimate.
An insurance company states that 90% of its claims are settled within 5 weeks. A consumer group selected a random sample of 100 of the company's claims and found 75 of the claims were settled within 5 weeks.
suppose a pitcher throws a fastball 80 of the time and a curveball 20 of the time. when its a fastball a home run is
Identify each of the following variables are qualitative or quantitative
a researcher wants to know if there was a difference between urban and rural jurisdictions in the hiring of female
It was found that in a sample of 215 teenage boys, 59% of them have received speeding tickets. What is the 95% confidence interval of the true proportion of teenage boys who have received speeding tickets?
The Ntional Lightning Detection Newtowk uses automatic sensors to watch for lightning in areas of 10 square kilometers. What are the mean and standard deviation of the total number of lightning strikes observed?
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