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Alexandra [31]
3 years ago
5

Instructions

Mathematics
1 answer:
VladimirAG [237]3 years ago
5 0
Where is the picture?
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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
The chart gives three different international calling plans. Jamie has budgeted $20 per month for international calls. Round ans
oksano4ka [1.4K]
A. 200.625 minutes   B. 184.166 minutes  C. 200 minutes  (round these answers like the question asked) 4. Plan A is the best because you get the most minutes for your money. I will explain my work for A, but if you need to explain the rest just ask. So, if you have to pay $3.95 every month no matter what and $0.08 for every minute you talk you can write the equation as, Cost = 3.95 + 0.08m (m stands for minutes), and the cost is 20$ then the equation is 20 = 3.95 + 0.08m, subtract 3.95 from the right side to make it 16.05 = 0.08m, then divide everything by 0.08 to get m, which gives you m= 200.625 
4 0
3 years ago
To find 19+(11+37) Lenny added 19 and 11. Then he added 37 to the sum .which property did he use
Alika [10]
He used the property of addition. Hope this helps. Please mark me as brainliest if I am right.
8 0
3 years ago
NEED HELP ASAP PLEASE!!!!!!!!!
ankoles [38]

Answer:

1) m=-7/5

2) m=-7/5

3) parallel

Step-by-step explanation:

the first part:

graph the points and then find the slope

m=-7/5

the second part:

slope= m in y=mx+b

m=-7/5

the last part:

they are parallel because they have the same slope

5 0
3 years ago
Read 2 more answers
Plz help me with these two questions
yuradex [85]
I cant see the color so i cant answer if u add the color i will answer
 
3 0
3 years ago
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