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arlik [135]
3 years ago
11

each of the 28 students in romi's class raised at least $25 during the jump-a-thon. what is the least amount of money the class

raised?​
Mathematics
1 answer:
AlladinOne [14]3 years ago
4 0

Answer:

$700

Step-by-step explanation:

25 the least amount of money earned by each student multiplied by 28 the number of students.

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Vlada [557]

Answer:

\mu = 20.3

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And we can find the limits in order to consider values as significantly low and high like this:

Low\leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5

High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

For this case we can consider a value to be significantly low if we have that the z  score is lower or equal to - 2 and we can consider a value to be significantly high if its z score is  higher tor equal to 2.

For this case we have the mean and the deviation given:

\mu = 20.3

\sigma = 4.9

And we can find the limits in order to consider values as significantly low and high like this:

Low \leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5

High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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