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alizeleach0123
04.07.2019 •
Mathematics
The distribution of the time it takes for different people to solve a certain crossword puzzle is strongly skewed to the right, with a mean of 30 minutes and a standard deviation of 15 minutes. the distribution of z-scores for those times is
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Ответ:
Ответ:
z-scores illustrates how far a data element is, from the mean of the dataset.
The distribution of z-scores of the mean is 0The distribution of z-scores of the standard deviation is -1Given
z-score is calculated using:
(a) The z-score of the mean
This means that:
So, we have:
(b) The z-score of the standard deviation
This means that:
So, we have:
Hence, the distributions of z-score for the mean and the standard deviation are 0 and -1 respectively.
Read more about z-scores at:
link
Ответ:
No. of children's tickets (500 - x): = 500 - 375 = 125
375 adults' tickets, 125 children's tickets
Proof (Receipts totaled $3,312.50): = (375 tickets * $7.50) + (125 tickets * $4.00) = $2,812.50 + $500.00 = $3,312.50