If µ = 400 and s = 100 the probability of selecting at random a score less than or equal to 370 equals ____.
1 answer:
You'll need to calculate the applicable z-score: (given value of x) - (mean value) z = ----------------------------------------------- standard deviation 370-400 -30 Here, z = --------------- = ---------- = -0.3 100 100 Use either a table of z scores or your calculator to determine the area under the standard normal curve to the left of z = -0.3. According to my TI-83 Plus calculator, this area is 0.382. The probability of selecting at random a score less than or equal to 370 is 0.382.
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Answer:
Step-by-step explanation:
2 * L + 2 * W = 68
2*L = 2* 9x = 9x + 9x
2*W = 2*8x = 8x + 8x
Since the perimeter is 68
9x + 9x + 8x + 8x = 68
Answer:
6: S
7: C
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9: C
10: N
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14: N
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Step-by-step explanation:
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D) 30
Step-by-step explanation:
3(a + 4b)-6 = 3 ( 4 + 4*2) - 6
= 3( 4+8 ) - 6
= 3*12 - 6
= 36 - 6 =30
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