Adata set has a mean of 50 and a standard deviation of 10. which of the following might possibly be true?

no less than 30% of the data values are less than 30 or greater than 70.

at least 15% of the data values are less than 20 or greater than 80.

at least 89% of the data values are between 20 and 80.

no more than 50% of the data values are between 30 and 70.

At least 89% of the data values are between 20 and 80.

Step-by-step explanation:

We use the Chebyshev's inequality to solve this problem. It states that:

A minimum of 75% of the measures lie within 2 standard deviations of the mean and a minimum of 89% of the measures lie within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 50, standard deviation = 10.

So a minimum of 75% of the measures are between 50-2*10 = 30 and 50 + 2*10 = 70 and a minimum of 89% of the measures are between 50-3*10 = 20 and 50+3*10 = 80.

So the correct answer is:

At least 89% of the data values are between 20 and 80.

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.