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3 years ago

According to the empirical rule, 68% of 7-year-old children are between _ inches and _ inches tall.

Mathematics

2 answers:

AveGali [126]3 years ago

8 0

Using the empirical rule 68% would fall within one standard deviation of the mean.

The standard deviation is given as 2 inches and the mean is 49 inches.

Since it is only one standard deviation find the lower number by subtracting the standard deviation from the mean and find the higher number by adding the standard deviation to the mean.

49 - 2 = 47

49 + 2 = 51

68% would be between 47 inches and 51 inches tall.

Zepler [3.9K]3 years ago

4 0

Answer:

47 inches and 51 inches tall

Step-by-step explanation:

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3 years ago

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2 years ago

Read 2 more answers

Which values of k would cause this system of equations to have no solution? Check all that apply.

xeze [42]

Answer:

x= -2y/3

-4y+4y=14

0y= 14

This has no solution.

Step-by-step explanation:

Answer In cases of two equations having two unknown variables the simultaneous method of solving the equations is adopted.

Supposing “0” as the value of “k” we will have the equation as 3x+2y=0

Then separating variable x will give, x= -2y/3

Substituting the value of x into the first equation that is: 6x + 4y = 14

6(-2y/3)+4y=14

Expanding this we get: 6(-2y/3)+4y=14

-4y+4y=14

0y= 14

Thus, no solution.

5 0

3 years ago

Read 2 more answers

According to the empirical rule, 68% of 7-year-old children are between ___ inches and ___ inches tall.

According to the empirical rule, 68% of 7-year-old children are between _ inches and _ inches tall.