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anyanavicka [17]
3 years ago
11

Can someone help me again pls?​

Mathematics
1 answer:
Dimas [21]3 years ago
7 0

Answer:

94,237,108?

Step-by-step explanation:

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The fuel efficiency in miles per gallon of all bmw 320i's is (approximately) normally distributed with a mean of 25 and a standa
grigory [225]
Given:
μ = 25 mpg, the population mean
σ = 2 mpg, the population standard deviation

If we select n samples for evaluation, we should calculate z-scores that are based on the standard error of the mean.
That is,
z= \frac{x-\mu}{\sigma / \sqrt{n} }

The random variable is x = 24 mpg.

Part (i):  n = 1
σ/√n = 2
z = (24 -25)/2 = -0.5
From standard tables,
P(x < 24) = 0.3085

Part (ii): n = 4
σ/√n = 1
z = (24 -25)/1 = -1
P(x < 24) = 0.1587

Part (iii): n=16
σ/√n = 0.5
z = (24 - 25)/0.5 = -2
P(x < 24) = 0.0228

Explanation:
The larger the sample size, the smaller the standard deviation.
Therefore when n increases, we are getting a result which is closer to that of the true mean.
6 0
3 years ago
the ratio of dog to cats in the shelter was 4 to 6 if there were 12 cats how many dogs would there be
jasenka [17]

Answer:

8 dogs

Step-by-step explanation:

If there were 6 cats, there would be 4 dogs. Since there is double that amount of cats, then we just double the amount of dogs from 4 to 8, our final answer.

I would appreciate Brainliest but no worries.

4 0
3 years ago
Raymond bought 5 rolls of paper towels. He got 99 4/5 meters of paper towels in all. How many meters of paper towels were on eac
ikadub [295]

Answer:

19.96

Step-by-step explanation:

99 4/5 in decimal form is 99.80, divide that by 5. hope this helps! :D

8 0
3 years ago
Read 2 more answers
Plz help will choose brainliest provide an explanation.
nika2105 [10]

Answer:

I wanna say b

Step-by-step explanation:

I'm gonna say b because u would think since they've paid $13, and it sells for $22, u would add that on the price, which in my opinion would be x + 13 = 22

7 0
3 years ago
Isn’t it 0.44444444.....or 0.444
Nataly_w [17]

Answer: it is 100% A

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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