brisamauro27
19.08.2019 •
Mathematics
Which fraction is halfway between 1/2 and 5/6? a. 2/3 b. 4/3 c.3/5 d.7/12 and another question arrange these numbers from least to greatest: -3/7, -5/6, -3/5, and -7/9 ?
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Ответ:
1/6, 2/6, 3/6 = 1/2, 4/6, 5/6, 6/6.
Halfway between 1/2 and 5/6 is 4/6 = 2/3.
2nd Question: Could've been worked out on a calculator.
-5/6, -7/9, -3/5, -3/7
Ответ:
a) z = -2.15 has p-value = 0.0158
b) z = -0.93 has p value = 0.1762
Step-by-step explanation:
We are given two z-scores and two p-values and we have to identify which p-value belongs to which z-score without using any calculator/table.
To solve this problem we need to understand about the p-value of the z-score and what does it represent. The p-value of a z-score represents the area under the graph in a standard normal curve which is to the left of that z-score. If the z-score is increased, the area to its left will increase, so this means the p-value will also increase.
From the given z-scores, z = - 2.15 is smaller than z = - 0.93. This means the area to the left of z = - 2.15 in a standard normal curve will be lesser than that of z = - 0.93. Hence, the p-value for z = - 2.15 will be lesser than the p-value of z = - 0.93
So,
p-value for z = - 2.15 is p = 0.058
and
p-value for z = 0.1762 is p = 0.1762