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Zielflug [23.3K]
4 years ago
12

74 increased by twice a number

Mathematics
1 answer:
loris [4]4 years ago
6 0
74 plus n to the second power
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A random sample of size 36 is to be taken from a population that is normally distributed with mean 72 and standard deviation 6.
Flauer [41]

Answer:

The sampling distribution of the sample mean is approximately normal with mean 72 and standard deviation 1.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Normally distributed with mean 72 and standard deviation 6.

This means that \mu = 72, \sigma = 6

A random sample of size 36

This means that n = 36, s = \frac{6}{\sqrt{36}} = 1

The sampling distribution of the sample mean is

By the Central Limit Theorem, it is approximately normal with mean 72 and standard deviation 1.

5 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
balu736 [363]

x equals 4 and y equals 5 . so the formula would be 5x+12y=80 and if we need 4 of the small boxes we sub x for 4 and we get 5(4) =20. Next, 80 minus 20 is 60, and the equation would now be 12y=60. we now divide both sides by 12 and we get left with y=5.  5x + 12y = 80  5(4) + 12(5)=80  20+60=80. That is all.  I hope that doesn't sound confusing

5 0
3 years ago
4x + y = 7 find the slope and write the equation <br><br> PLEASE HELP!!!!!
Alexus [3.1K]

Answer:

3

Step-by-step explanation:

4x + 3 = 7

6 0
3 years ago
On Elisa's birthday, her mom made a chocolate cake. After the party,2/3 of the cake was left. The next day, Elisa ate 1/3 of wha
EleoNora [17]

Answer:

1/3

Step-by-step explanation:

when the party started he cake was 3/3 after the party it was 2/3 so they ate one slice/third and now Elisa ate 1/3 one (one Third)  so now there is 1/3 left of the cake ( subtracting fractions)

8 0
3 years ago
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What is the most reasonable for the weight of a table and four chairs? A 19 pounds B 90 pounds C 900 pounds D 9 tons
Rom4ik [11]

Answer:

B. 90 pounds.

Step-by-step explanation:

19 pounds would be too light, 900 pounds would be too heavy, and 9 tons is equal to 18,000 pounds which is wayy too heavy.

Hope this helps!

7 0
3 years ago
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