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Finger [1]
3 years ago
12

For each of the following situations, identify the response variable and the populations to be compared, and give

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
4 0

Answer:

leifjdfhjejfr8fr

Step-by-step explanation:

lets gohdffddendhcfnd

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How can you find the LCM of two rational expressions if the polynomials cannot be factored?
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To find the LCD of two rational expressions, we factor the expressions and multiply all of the distinct factors. For instance, if the factored denominators were (x+3)(x+4) ( x + 3 ) ( x + 4 ) and (x+4)(x+5) ( x + 4 ) ( x + 5 ) , then the LCD would be (x+3)(x+4)(x+5) ( x + 3 ) ( x + 4 ) ( x + 5 ) .

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2 years ago
Complete the work shown to answer the question.
blagie [28]

Answer:

Since 7 and 11 are both rational, the sum and difference are rational.

Step-by-step explanation: It's A

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3 years ago
Write in standard form: 800,000 + 70,000 + 400 + 6
Alex73 [517]

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3 years ago
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An article in the November 1983 Consumer Reports compared various types of batteries. The average lifetimes of Duracell Alkaline
Allushta [10]

Answer:

The mean is of -0.4 hours.

Step-by-step explanation:

To solve this question, we need to understand the central limit theorem and subtraction of normal variables.

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.

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

Mean of the sample of 64 Duracell:

By the Central Limit Theorem, 4.1 hours.

Mean of the sample of 64 Eveready:

By the Central Limit Theorem, 4.5 hours.

Mean of the difference?

Subtraction of normal variables, so we subtract the means.

4.1 - 4.5 = -0.4

The mean is of -0.4 hours.

8 0
3 years ago
Can someone help me with this question?
den301095 [7]
Yes, the answer is both of them. tell me if you want to know why
7 0
3 years ago
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