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OLEGan [10]
3 years ago
11

Suppose the scores on an exam are normally distributed with a mean μ = 75 points, and standard deviation σ = 8 points. The instr

uctor wanted to "pass" anyone who scored above 69. What proportion of exams will have passing scores?
(a) .25 (b) .75 (c) .2266 (d) .7734 (e) -.75
Mathematics
1 answer:
galben [10]3 years ago
4 0

Answer:

(d):  0.7734

Step-by-step explanation:

Using the normcdf( statistical function built into my old TI 83-Plus calculator, I find that the area under the standard normal curve from the extreme left to the value 69 is 0.2266.  Thus, about 0.2266 of students would fail and

1.000-0.2266, or 0.7734 would pass.  This corresponds to Answer (d).

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An office and apartment building is made up of modules. Each module is a rectangular prism. The building has 150 modules, and is
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Answer:

Part 1) 10 modules per floor

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Step-by-step explanation:

Part 1)

Let

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Part 2) How many different rectangular prisms could be made from that number?

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Look at the factors of  10

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Pick any two of these factors and determine if there is a third value from this list so that the product of the three factors is 10

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4 0
3 years ago
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Just an 15% 15.8% to be exact
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AlekseyPX

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h

Step-by-step explanation: j

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2 years ago
How much money does Conor earn each minute he does yard work, if he works 3.25 hours at $9 an hour?
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Answer:

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8 0
2 years ago
PLS HELP ASAP<br><br><br><br> WORTH 99 POINTS!
chubhunter [2.5K]

Answer:

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