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saw5 [17]
3 years ago
13

In an engineering firm all workers work a basic week of 40 hours.

Mathematics
1 answer:
Romashka [77]3 years ago
6 0

Answer:

$1,006.40

Step-by-step explanation:

Basic week = ($14.80/hour) * (40 hours) = $592.00

M-F overtime = ($14.80/hour ) * ( 1.25 ) * (12 hours) = $222.00

Sat overtime = ($14.80/hour ) * ( 1.5 ) * (2 hours) = $44.40

Sun overtime = ($14.80/hour) * ( 2 ) * (5 hours) = $148.00

Total wage = 592.00 + 222.00 + 44.40 + 148

Total wage = $1,006.40

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A large manufacturing plant uses lightbulbs with lifetimes that are normally distributed with a mean of 1200 hours and a standar
a_sh-v [17]

Answer:

The bulbs should be replaced each 1060.5 days.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 1200, \sigma = 60

How often should the bulbs be replaced so that no more than 1% burn out between replacement periods?

This is the first percentile, that is, the value of X when Z has a pvalue of 0.01. So X when Z = -2.325.

Z = \frac{X - \mu}{\sigma}

-2.325 = \frac{X - 1200}{60}

X - 1200 = -2.325*60

X = 1060.5

The bulbs should be replaced each 1060.5 days.

4 0
3 years ago
Given the function (Image below) [Algebra ll]
Irina18 [472]
X= -1 and -11
Put -1 and -11 in for x. The answer comes out 6
7 0
3 years ago
2 times -1/4 times 3
NemiM [27]

Answer:

-1.5

Step-by-step explanation:

2 times -1/4 is -0.5. -0.5 times 3 is -1.5

5 0
3 years ago
Given the function f(x)=6x-11, find f(-1/3).
Nadya [2.5K]

Answer:

-13

Step-by-step explanation:

(-1/3)*6 = -2

f(-1/3) = -2 -11

f(-1/3) = -13

7 0
3 years ago
Can you answer and explain please
nalin [4]
Answer what exactly?
8 0
3 years ago
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