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zloy xaker [14]
3 years ago
10

Companies that design furniture for elementary school classrooms produce a variety of sizes for kids of different ages. Suppose

the heights of kindergarten children can be described by a Normal model with a mean of 38.2 inches and a standard deviation of 1.8 inches.
Require:
a. What fraction of kindergarten kids should the company expect to be less than 3 feet tall?
b. In what height interval should the company expect to find the middle 80% of kindergarteners?
c. At least how tall are the biggest 10% of kindergarteners?
Mathematics
1 answer:
pav-90 [236]3 years ago
8 0

Answer:

SDFGHJKLÑ

Step-by-step explanation:

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2 years ago
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two numbered 1 to 6 dice are thrown together and their scores are added. the probability that the sum will be 4 is?​
natulia [17]

Answer:

Pr = \frac{3}{36}

Step-by-step explanation:

Given

2 number die

Required

P(Sum = 4)

The sample space of 2 die is:

S = \{(1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6), (2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6)

(3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6), (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6)

(5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6), (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)

n(S)= 36

The pairs that adds up to 4 are:

Sum(4) = \{(1,3), (2,2),(3,1)\}

n(Sum)  =3

So, the probability is:

Pr = \frac{n(Sum)}{n(S)}

Pr = \frac{3}{36}

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gogolik [260]

Answer:

A parallelogram is a quadrilateral with no axis of line symmetry.

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