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3 years ago

JUAN SAYS, WHEN YOU PUT TOGETHER UNEQUAL GROUPS,YOU CAN ONLY ADD. IS HE CORRECT ? EXPLAIN.

2 answers:

5 0

If you treat multiplication as repeated addition, then yes, Juan is correct. Only equal groups can be multiplied.

Tresset [83]3 years ago

3 0

Answer: The answer is yes.

Step-by-step explanation: According to Jaun, when we put together unequal groups, we can only add. We are to check whether he is correct or not.

Let us consider the addition of unequal groups and let the groups be linear polynomials (x-1), (x-2) and (x-3).

Then, adding these, we have

(x-1)+(x-3)+(x-4) = x-1+x-3+x-4 = 3x-8. Therefore, addition is the only thing that is possible here. We cannot multiply or use any other mathematical operation.

Again, let us consider the addition of equal groups (x-3), (x-3) and (x-3). Adding these, we have

(x-3)+(x-3)+(x-3) = 3x-9 = 3(x-3), i.e., addition can be written in multiplicative form too in case of equal groups.

Thus, when we put together unequal groups, addition is the only operation possible. Jaun is absolutely correct.

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The effect of a monetary incentive on performance on a cognitive task was investigated. The researcher predicted that greater mo

riadik2000 [5.3K]

Answer:

1) $H_0:\mu_5=\mu_{25}=\mu_{50}$

2) $H_a:\mu_{50}>\mu_{25}>\mu_{5}$

3) A Type I error happens when we reject a null hypothesis that is true. In this case, that would mean that the conclusion is that there is evidence to support the claim that the greater the incentive, the more puzzles are solved, but that in reality there is no significant difference.

4) A Type II error happens when a false null hypothesis is failed to be rejected. In this case, that would mean that there is no enough evidence to support the claim that the greater the incentive, the more puzzles are solved, but in fact this is true.

5) The probability of a Type I error is equal to the significance level, as this is the chance of having a sample result that will make the null hypothesis be rejected.

Step-by-step explanation:

As the claim is that the greater the incentive, the more puzzles were solved, the null hypothesis will state that this claim is not true. That is that there is no significant relation between the incentive and the amount of puzzles that are solved. In other words, the mean amount of puzzles solved for the different incentives is equal (or not significantly different):

$H_0:\mu_5=\mu_{25}=\mu_{50}$

The research (or alternative hypothesis) is that the greater the incentive, the more puzzles were solved. That means that the mean puzzles solved for an incentive of 50 cents is significantly higher than the mean mean puzzles solved for an incentive of 25 cents and this is significantly higher than the mean puzzles solved for an incentive of 5 cents.

$H_a:\mu_{50}>\mu_{25}>\mu_{5}$

A Type I error happens when we reject a null hypothesis that is true. In this case, that would mean that the conclusion is that there is evidence to support the claim that the greater the incentive, the more puzzles are solved, but that in reality there is no significant difference.

A Type II error happens when a false null hypothesis is failed to be rejected. In this case, that would mean that there is no enough evidence to support the claim that the greater the incentive, the more puzzles are solved, but in fact this is true.

The probability of a Type I error is equal to the significance level, as this is the chance of having a sample result that will make the null hypothesis be rejected.

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3 years ago

How long is a mac address? select one:

geniusboy [140]

Hey there!

A MAC, or Media Access Control, Address is a unique identifier that is assigned to devices connected to a network. It is 6-bytes, or 48-bits, in size. It follows the format MM:MM:MM:SS:SS:SS, where the first 3-bytes are the identification number of the manufacturer and the second 3-bytes are the serial number assigned by the manufacturer.

Your answer will be D.

Hope this helped you out! :-)

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3 years ago

20 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

polet [3.4K]

Answer:

Y = A/X

Step-by-step explanation:

divide x from xy, balance the equation by dividing x from a.

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2 years ago

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stellarik [79]

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