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How long is a score in units of time?
I think it's some American thing that said 4 score and whatever years ago. Because it was used in the same sentence as whatever years, the score refers to an amount of years. Score on its own means 20, but it does not have units attached.
What does the numerator of the z score test statistic measure?
The numerator of the z-score test statistic measures the points earned on the test. The denominator measures the amount of possible points that could have been earned.
What amount spent on books has a standardized score equal to 0.5 if the mean amount spent was 300 and the standard deviation is 100?
The formula for Z-Score is: (x-mu)/sigma. We know from the information given that Z=0.5, mu=300 & sigma=100. Solve for x and plug in the values. X=Z*sigma+mu; x=0.5*100+300 or x=350. So, $350 is amount spent on books.
How is a FICO scored score formed?
I suggest visiting www.myfico.com for further research on this question. Basically, FICO takes an undisclosed amount of unspecified factors such as payment history, type and usage of credit, available limits and creates a mathematical score of risk.
Calculate the z-score for a test score of 87 if the mean test score is 81.1 and standrd deviation is 11.06?
z score = (test score - mean score)/SD z score = (87-81.1)/11.06z score = 5.9/11.06z score = .533You can use a z-score chart to calculate the probability from there.
