Answer:
The <em>z</em>-score for a a class with 21 students is <u>-1.33</u>.
Step-by-step explanation:
The <em>z</em>-score of a raw <em>X</em> is computed by subtracting the mean of a distribution from the raw score <em>X</em> and dividing the result by the standard deviation of the distribution.
The <em>z</em>-scores are standardized scores and follow a Standard normal distribution.
Given:
μ = 38.1
σ = 12.9
<em>X</em> = 21
Compute the <em>z</em>-score for the raw score <em>X</em> as follows:
Thus, the <em>z</em>-score for a a class with 21 students is <u>-1.33</u>.
Answer:
until the 4th visit, GWS has the better cost but after the 4th visit the cost for Mega is higher
Step-by-step explanation:
(a)
the list would be
-20, -12, -8, -1, 1, 5, 10
the other intergers would have to be greater than 1 in order to be on the correct side and cause 1 to be in the middle. They could be anything but 5 and 10 because these were already chosen.
(b)
the list would be like before
-3 was not included so one of the chosen would be -3 and the other would have to be less than -3 but not -8, -12, or -20 beacuse those were already chosen
Answer:
25 = 23
100 = X
Cross multiply and you will have:
25x = 2300
Step-by-step explanation:
Add parentheses around the ( 2 + 3 )
