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Komok [63]
3 years ago
14

How many units away is 1 from -6 on a number line? A. 7 B. -5 C. 5 D. -7

Mathematics
1 answer:
lord [1]3 years ago
7 0

Answer:

7

Step-by-step explanation:

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The times to pop a 3.4-ounce bag of microwave popcorn without burning it are Normally distributed with a mean
NeTakaya

This question is solved using the central limit theorem, giving an answer of:

Fourth option, approximately normal with mean of 140 seconds and standard deviation of 10 seconds.

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

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

Mean of 140, standard deviation of 20, sample of 4:

By the Central Limit Theorem, the distribution is approximately normal.

Mean is the same, of 140.

n = 4, \sigma = 20, thus:

s = \frac{\sigma}{\sqrt{n}} = \frac{20}{\sqrt{4}} = 10

Thus, the correct answer is:

Fourth option, approximately normal with mean of 140 seconds and standard deviation of 10 seconds.

For another example of the Central Limit Theorem, you can check brainly.com/question/15519207

4 0
3 years ago
In the formula p=kt find t when k=36 and p=144
stepan [7]

Answer:

t=4

Step-by-step explanation:

solve for t by deciding both sides by k.

then do 144/36 to get t.

4 0
3 years ago
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A triangle has two perpendicular sides that are the same length.
yan [13]

Answer:

A.

isosceles, right

Step-by-step explanation:

perpendicular lines means that they make 90° angle with each other and for a triangle to be isosceles it has to have 2 sides of equal length

8 0
2 years ago
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Find the mode, median, mean and range for this set of data.
Lynna [10]

Answer:

Step-by-step explanation:i dont know your mom

3 0
3 years ago
Simply 8t + 6r - 3t + 2r
ehidna [41]

Answer: 8r+5t

Step-by-step explanation:

8t + 6r - 3t + 2r

8t-3t= 5t

6r+2r=8r

= 8r+5t

4 0
3 years ago
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