What is the equation for 2.91 x 0.5
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(a) The z-score is calculated by subtracting the population mean from the x value and dividing this difference by the standard deviation.
If Nolan played for 44 minutes in last week's game against fairview, then his z-score would be:
ANSWER: The z-score for Nolan's playing time against fairview is 1.33.
(b) Since the z-score for Nolan's playing time against fairview is 1.33, then we know that his playing time is 1.33 standard deviations from the mean. If you compare this to the fact that 95% of all data fall within two standard deviations from the mean (empirical rule), then Nolan's playing time would not be unusual compared to the typical playing time.
If Nolan played for 44 minutes in last week's game against fairview, then his z-score would be:
ANSWER: The z-score for Nolan's playing time against fairview is 1.33.
(b) Since the z-score for Nolan's playing time against fairview is 1.33, then we know that his playing time is 1.33 standard deviations from the mean. If you compare this to the fact that 95% of all data fall within two standard deviations from the mean (empirical rule), then Nolan's playing time would not be unusual compared to the typical playing time.
We have been given that Davis has 141 figures in his action figure collection. One-third of the figures are sports related.
To find the number of figures that are not sports related we will find 2/3 of 141 as 2/3 of the figures will be not related to sports.
Therefore, 94 figures in Davis’ collection are not sports related.