3 years ago

Help me pleasee 20 points ! If u can’t see zoom it please help

Mathematics

1 answer:

Taya2010 [7]3 years ago

3 0

Answer:

1 hr = $60.20

2 hrs. = $120.40

3 hrs. = $180.40

4 hrs. = $240.80

5 hrs. = $301.00

Step-by-step explanation:

Multiply 60.20 by the number of hours to get your answers.

Ex: $60.20 (amount every hour) x 2 (number of hours) = $120.40

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(2) 0.7799

Step-by-step explanation:

Given,

Mean value,

$\mu = 15.0$

Standard deviation,

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(1) P(X ≥ 17.5) = 1 - P( X ≤ 17.5)

$= 1- P(\frac{x-\mu}{\sigma} \leq \frac{17.5-\mu}{\sigma})$

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(2) P(14 ≤ X ≤ 18) = P(X ≤ 18) - P(X ≤ 14)

$=P(z\leq \frac{18 - 15}{1.25}) - P(z\leq \frac{14 - 15}{1.25})$

$=P(z\leq \frac{3}{1.25}) - P(z\leq -\frac{1}{1.25})$

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