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sleet_krkn [62]
3 years ago
9

Find the indicated area under the curve of the standard normal​ distribution; then convert it to a percentage and fill in the bl

ank. About​ ______% of the area is between z2 and z2 ​(or within 2 standard deviations of the​ mean). About nothing​% of the area is between z2 and z2 ​(or within 2 standard deviations of the​ mean).
Mathematics
1 answer:
galben [10]3 years ago
4 0

Answer:

95%

Step-by-step explanation:

About 95% of the area is within two standard deviation in standard normal distribution. This can be explained by finding the probability within 2 standard deviation using standard normal distribution.

P(z1<Z<z2)=P(-2<Z<2)

P(-2<Z<2)=P(-2<Z<0)+P(0<Z<2)

P(-2<Z<2)=0.4772+0.4772

P(-2<Z<2)=0.9544

Thus, About 95% of the area is between z2 and z2

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Marco starts getting ready for soccer practice at 3:55 P.M. if it takes him 15 minutes to get ready, what time is he ready to le
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Answer:

4:10 PM

Step-by-step explanation:

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2 years ago
At the city museum, child admission is $5.60 and adult admission is $9.30. On Sunday, 141 tickets were sold for a total sales of
IrinaK [193]

x = child tickets

y = adult tickets

x + y = 141

5.60x + 9.30y = 974.60

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5.60x + 9.30 ( 141 - x ) = 974.60

5.60x + 1311.3 - 9.30x = 974.60

-3.70x + 1311.3 = 974.60

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x = 91

91 child tickets were sold that day

5 0
2 years ago
Read 2 more answers
The aquarium charges an entrance fee of $5 per child and $12 per adult. On one day, 100 people visited the aquarium. They collec
igor_vitrenko [27]

Answer:

We set up 2 equations

A) C + A = 100

B) 5C + 12A = 780

We multiply A by -5

A) -5C -5A = -500   then we add B

B) 5C + 12A = 780

7A = 280

Number of Adults = 40

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Number of Children = 60

Step-by-step explanation:

6 0
3 years ago
27 divided by 52,758
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Answer:

511

Step-by-step explanation:

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3 years ago
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