Anyone got the answer??
1 answer:
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Answer:
Here the given subtraction problem,
55 - 23
For finding the answer with help of the number line we will follow the following steps,
Step 1 : First find the number 55 on the number line.
Step 2: Count the position of 55 from 0 of the number line,
Step 3: Now count back from 55 to 23,
We will get 32.
Thus, 55 - 23 = 32.
Answer: 5.37
Step-by-step explanation:
Let x = ACT scores.
Given: ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately normal.
i.e. P(X>28)=0.09 (i)
Now,
(ii)
One -tailed z value for p-value of 0.09 =1.3408 [By z-table]
From (i) and (ii)
Hence, the standard deviation = 5.37