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spayn [35]
3 years ago
13

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation i

s 5 inches. The heights of 9 randomly selected students are 66, 71, 63, 74, 69, 64, 66, 68 and 67.
Mathematics
2 answers:
pav-90 [236]3 years ago
6 0

Answer:

66

Step-by-step explanation:

try your best

AfilCa [17]3 years ago
3 0

Answer:

The mean is about 68 (67.5555)

Step-by-step explanation:

(63+64+66+66+67+68+69+71+74) / 9 ≈ 68

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What is the y coordinate of the point where a graph crosses the y axis called ?
UNO [17]

Answer:

y-interspet  i think

Step-by-step explanation:

8 0
3 years ago
30% of Number A is the same as 40% of Number B.
Goryan [66]

30% of number A means

\dfrac{30A}{100}=\dfrac{3A}{10}

similarly, 40% of number B means

\dfrac{40B}{100}=\dfrac{2B}{5}

These must be equal, so we have

\dfrac{3A}{10}=\dfrac{2B}{5}

Multiply both sides by 10 to get

3A=4B \iff A=\dfrac{4B}{3}

So, you can choose any number for A, and then you multiply it by 4/3 to get B. There are infinitely many solutions to this equation.

5 0
3 years ago
What is the value of f(g(1)
ladessa [460]

Composite functions is a way of substituting one function into another. The value of the composite function f(g(1)) is 1

<h3>Composite functions</h3>

Composite functions is a way of substituting one function into another.


Given the function expressed as:

y = 3√x + 1

g(1) from the mapping is 0

Substitute g(1) = 0 into the given function to have:

f(g(1)) =  3√0 .+ 1

f(g(1)) =0 + 1
f(g(1))  = 1

Hence the value of the composite function f(g(1)) is 1

Learn more on composite function here: brainly.com/question/10687170

#SPJ1

7 0
2 years ago
The room can hold a maximum of 400 people. If there are already 134 people
Olegator [25]

Answer:

x+ 134 is less than or equal to 400 is the answer

6 0
3 years ago
Simplify 11(3t+2)-4(2t-1​
Ksenya-84 [330]

The answer to the question is 25t+26

6 0
2 years ago
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