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Dmitry [639]
3 years ago
5

The heights of five-year-olds are Normally distributed with a mean of 42.5 inches and a standard deviation of 2.5 inches. A rand

om sample of 16 five-year-olds is taken and the mean height is recorded. What would be the standard deviation of the sampling distribution of all possible samples of size 16?
0.16
0.63
2.5
2.66
Mathematics
1 answer:
rjkz [21]3 years ago
8 0

Answer:

0.63

Step-by-step explanation:

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Pls help ASAP will give brainlies
vagabundo [1.1K]

Answer:

The answer is the third selection

Step-by-step explanation:

7 0
3 years ago
Which of the following gives all of the sets that contain -1/2?
fiasKO [112]
ANSWER


The set of all rational numbers and the set of all real numbers.


EXPLANATION

The set of rational numbers contains all numbers that can be written in the form,


\frac{a}{b}


where a and b are integers and b≠0.


The given number is

-  \frac{1}{2}


It belongs to the set of rational numbers.


The set of rational numbers is a subset of the set of real numbers.

Hence

-  \frac{1}{2}
also belongs to the set of real numbers.


The correct answer is A.
3 0
3 years ago
Need math help please!
algol [13]

Answer:

AAS

Step-by-step explanation:

The triangles are given 2 congruent corresponding angles and 1 congruent corresponding side. So the only answer that would make sense would be the AAS Theorem.

3 0
3 years ago
Lena got a prepaid debit card with $30 on it. For her first purchase with the card, she bought some bulk ribbon at a craft store
jasenka [17]

Step-by-step explanation:

To find out how much she spent:

30 - 27.15 = 2.85

Change it to cents:

2.85 x 100 = 285 cents

Calculate how many yards of ribbon she bought:

285 / 19 = 15

Therefore, she bought 15 yard of ribbon.

6 0
2 years ago
Match these. Please.
vitfil [10]
Radius 12 units,  area = π(12)² = 452.16 unit²

Diameter 16.8 units, area =  π(8.4)² = 221.5584 unit²
 
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Diameter 10 units, area =  π(5)² = 78.5 units²

4 0
3 years ago
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