3 years ago

14 POINTS PLEASE HELP

Mathematics

1 answer:

Anika [276]3 years ago

4 0

Answer:

5 cars and 3 busses

Step-by-step explanation:

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A paint company claims their paint will be completely dry within 45 minutes after application. Recently, customers have complain

Angelina_Jolie [31]

Answer:

The probability of observing a sample mean of x = 52 or greater from a sample size of 25 is 0.0000026

Step-by-step explanation:

Mean = $\mu = 45$

Population standard deviation = $\sigma = 6$

Sample size = n =25

Sample mean = $\bar{x} = 52$

We are supposed to find the probability of observing a sample mean of x = 52 or greater from a sample size of 25 i.e. $P(x\geq 52)$

$Z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}\\Z=\frac{52-45}{\frac{6}{\sqrt{25}}}$

Z=5.83

P(Z<52)=0.9999974

$P(Z\geq 52)=1-P(z$

Hence the probability of observing a sample mean of x = 52 or greater from a sample size of 25 is 0.0000026

3 0

3 years ago

Can you help me with this question?

goldenfox [79]

We can start by saying that 4/3w+ 3/3w = 133.
we can simplify to 7/3w = 133.
multiply both sides by 3 to get 7w = 399.
divide both sides by 7 to get 57.
Mr. Wong's mass is 57 kg.

3 0

3 years ago

Can you find the slope for me, please?

shusha [124]

The slope is -3/2

Use the two ordered pairs (-2,0) and (0,-3) and do y2-y1/x2-x1

-3-0/0+2= -3/2

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3 years ago

Read 2 more answers

Write the ratio 69:75 as a fraction, decimal,and a percent.

LekaFEV [45]

As a fraction, 69:75 would become 96/75
As a decimal 69:75 would become 0.92
As a percentage 69:75 would become 92%
Hope this helps :)

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3 years ago

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Mr. Herkowitz owns a jewelry store. He marks up all merchandise 50 percent of

nasty-shy [4]

Answer:

$750

Step-by-step explanation:

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3 years ago