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lilavasa [31]
4 years ago
11

An experiment using 35 guinea pigs is set up to study the weight of the pigs after injecting them with a drug. If the population

mean is 23.5 grams with a standard deviation of 3.4 grams, what is the margin of error of the sample mean?
Mathematics
2 answers:
Artist 52 [7]4 years ago
7 0
The formula in getting the margin of error of the sample mean, the formula is the product of the percentage of confidence and the quotient of the population of the standard deviation and the square root of of its sample size. So the answer is  0.097 grams
patriot [66]4 years ago
5 0

If the population mean is 23.5 grams with a <span>standard deviation of 3.4 grams, then the margin of error of the sample mean is </span><span>0.097 grams. The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query about this specific question.</span>

<span> </span>

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I need help with this
9966 [12]

Answer:

$2.75

Step-by-step explanation:

You would divide the total (13.75) by the amount of crayons he got (5 packs) and you get your answer.

7 0
3 years ago
Choose one of the factors of x^3 + 343.
Debora [2.8K]

First, note that 343=7^3. Then use the formula for the sum of perfect cubes:

a^3+b^3=(a+b)(a^2-ab+b^2).

Therefore,

x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).

The quadratic trinomial x^2-7x+49 couldn't be factored anymore, so the expression x^3 + 343 has two factors x+7 and x^2-7x+49.

Answer: correct choice is A.

3 0
3 years ago
Laurent invested some money in a bank account.
zavuch27 [327]

Answer:

1.04

Step-by-step explanation:

"Complete the following sentence about the yearly rate of change in the amount of money in the account.  Round your answer to two decimal places.

Every year, the amount of money in the account increases by a factor of _."

Mdecade(t) = 4900 (1.5)^t, where t is in decades.

One year is 0.1 decades, so M increases by a factor of:

1.5^0.1 = 1.04

4 0
3 years ago
Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
vazorg [7]

the scale is x4

because 10x4=40

11x4=44

18x4=72

you multiply by 4 on all of them

6 0
3 years ago
Read 2 more answers
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Viefleur [7K]
The correct answer is 600. For area do you Base times height which is 20×30 which equals 60.
5 0
3 years ago
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