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Crazy boy [7]
2 years ago
11

The common factors of 24 and 56 are

Mathematics
1 answer:
Tamiku [17]2 years ago
3 0

Answer:

the answer would be B 1, 2, and 4

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The physical plant at the main campus of a large state university receives daily requests to replace fluorescent light bulbs. Th
ankoles [38]

We have been given that the distribution of the number of daily requests is bell-shaped and has a mean of 38 and a standard deviation of 6. We are asked to find the approximate percentage of lightbulb replacement requests numbering between 38 and 56.

First of all, we will find z-score corresponding to 38 and 56.

z=\frac{x-\mu}{\sigma}

z=\frac{38-38}{6}=\frac{0}{6}=0

Now we will find z-score corresponding to 56.

z=\frac{56-38}{6}=\frac{18}{6}=3

We know that according to Empirical rule approximately 68% data lies with-in standard deviation of mean, approximately 95% data lies within 2 standard deviation of mean and approximately 99.7% data lies within 3 standard deviation of mean that is -3\sigma\text{ to }3\sigma.

We can see that data point 38 is at mean as it's z-score is 0 and z-score of 56 is 3. This means that 56 is 3 standard deviation above mean.

We know that mean is at center of normal distribution curve. So to find percentage of data points 3 SD above mean, we will divide 99.7% by 2.

\frac{99.7\%}{2}=49.85\%

Therefore, approximately 49.85\% of lightbulb replacement requests numbering between 38 and 56.

6 0
3 years ago
True or false: randomization allows each member of the population to have an equal probability of being selected for the sample
tia_tia [17]

Answer:

True

Step-by-step explanation:

Simple random sampling chooses at random members of the population. This allows all members an equal probability of being selected for the sample.

4 0
3 years ago
What is 15% of $32.50 and please explain how you got your answer please
Ann [662]
You can say : 15% ⇒ ? if 100% ⇒ 32.50 $ 
so next you can say : 15/100 = ?/32.50 ⇒ ? = (15/100) × 32.50 = 15 × 32.50 ÷ 100 = 4.875 ⇒ so the answer is 4.785 $ ;D i hope this will be helpful :))
3 0
3 years ago
Read 2 more answers
I need help with the questions please help me.
Tomtit [17]
1. is D and 2. is C and 3. is B
6 0
3 years ago
Dimetri
Nikolay [14]

Step-by-step explanation:

6 0
2 years ago
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