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Bogdan [553]
3 years ago
15

Z is a normally distributed random variable. the distribution of z has a mean equal to 0 and a standard deviation equal to 1. wh

at is the probability that z will be less than 1.3 or p(z <1.3) ?

Mathematics
1 answer:
kolbaska11 [484]3 years ago
7 0
The probability is found from a suitable table or probability calculator.
p(z < 1.3) ≈ 0.9031995154

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PLSS HELP
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Answer:

$8,000

Step-by-step explanation:

Let the store earned $x in December.

Therefore,

Money spent to buy new inventory =\frac{1}{4} x

Remaining money = x - \frac{1}{4} x =\frac{3}{4} x

Money used to pay bills =\frac{1}{2} \times \frac{3}{4} x=\frac{3}{8} x

Money still left over = $3,000

Total money earned in December = \frac{1}{4} x+ \frac{3}{8} x+3,000

\therefore x= \frac{1}{4} x+ \frac{3}{8} x+3,000

\therefore x= \frac{2}{8} x+ \frac{3}{8} x+3,000

\therefore x= \frac{5}{8} x+ 3,000

\therefore x- \frac{5}{8} x=3,000

\therefore \frac{8x-5x}{8} =3,000

\therefore \frac{3x}{8} =3,000

\therefore x =3,000\times \frac {8}{3}

\therefore x =1,000\times 8

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Thus, total money earned in December is $8,000.

3 0
3 years ago
The range is the set of
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Remember: Calculators exist lol.
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3 years ago
Read 2 more answers
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