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Olegator [25]
3 years ago
8

Suppose a normal distribution has a mean of 79 and a standard deviation of 7. What is P(x< or = to 72)?

Mathematics
1 answer:
enot [183]3 years ago
8 0

Answer:

P( Z <= -1) = 0.1587

Step-by-step explanation:

ok, mean u = 79

s = 7

find  P( x <=  72)

P( (x - 79)/7  <=   (72 - 79)/7 )  = ?

P( Z <= -1) = 0.1587   from Z-scores table

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Answer:

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Step-by-step explanation:

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5. What is the value of x in the triangle at the right?<br> A. 23<br> B. 32 <br> C. 125<br> D. 148
sergiy2304 [10]

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Step-by-step explanation:

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4 0
3 years ago
Which equation shows y=−12x+4 is in standard form? 2x + y = 8 2x−y=8 x + 2y = 8 x+2y=−8
drek231 [11]

Answer:

<h2>x + 2y = 8</h2>

Step-by-step explanation:

The standard form of an equation of a line:

Ax+By=C

We have:

y=-\dfrac{1}{2}x+4

Convert:

y=-\dfrac{1}{2}x+4            <em>multiply both sides by 2</em>

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3 0
3 years ago
Amy is eight years older than twice her cousin Alicia’s age. The sum of their ages is less than 32. Let x represent Alicia's age
horsena [70]
Ok, so amy is 8 years older than twice alica's age
if amy=y and alica=x
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and sum is less than 32
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we can subsitute 8+2x for y in other equation
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4 0
4 years ago
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