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san4es73 [151]
3 years ago
7

5980287458q36843872+7747617443402

Mathematics
1 answer:
RoseWind [281]3 years ago
8 0

Answer:

5304

Step-by-step explanation:

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In one region, the september energy consumption levels for single-family homes are found to be normally distributed with a mean
Mrac [35]
We first calculate the z-score corresponding to x = 1075 kWh. Given the mean of 1050 kWh, SD of 218 kWh, and sample size of n = 50, the formula for z is:
z = (x - mean) / (SD/sqrt(n)) = (1075 - 1050) / (218/sqrt(50)) = 0.81
From a z-table, the probability that z > 0.81 is 0.2090. Therefore, the probability that the mean of the 50 households is > 1075 kWh is 0.2090.
3 0
4 years ago
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What is the value of the expression k + (40) when k = 12 and b = 42
Lubov Fominskaja [6]

hey there!

If k = 12, then k + 40 = 12 + 40 = 52.

Hope it helps and have a great day!

8 0
3 years ago
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Solving multi-step<br>1.2+1.25g=8.62<br>g=​
shutvik [7]
Here are the answers

4 0
4 years ago
6. Kayla is planning to buy a new phone. Rongers charges $0 for down payment plus $127 monthly fee. Fidoll charges $363 for down
ale4655 [162]

Answer:

See below ↓↓

Step-by-step explanation:

<u>Plan 1</u>

  • 0 + 127x

<u>Plan 2</u>

  • 363 + 94x

<u>Part A</u>

<u>Equating them</u>

⇒ 127x = 363 + 94x

⇒ 33x = 363

⇒ x = <u>11 months [They will be same at this point]</u>

<u>Part B</u>

⇒ Plan 1 : 127(24) = $3048

⇒ Plan 2 : 363 + 94(24) = 2256 + 363 = $2619

⇒ I would recommend Plan 2 as it costs less for the time period of 2 years

3 0
3 years ago
Which statement is true about the graphed function?
lana66690 [7]

Answer:

o

0 F x>o v 0 cover the interval (-4,-3

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4 years ago
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