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2 years ago

A mom walks into her child's room and finds clothes all over the floor. 20% of the

Mathematics

1 answer:

MissTica2 years ago

4 0

Answer:

1 clean cloth

Step-by-step explanation:

Assuming that the problem is asking the number of clean clothes she picks up when she picked 5 articles.

here we are given that , there are 20% clothes in the room. Hence out of 5 clothes she picks up, the total number of clean clothes will be 20% of 5

20% of 5 will be 0.20 x 5 = 1

Hence , there will be only clothe that might be clean among the clothes she picks .

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Employees in the marketing department of a large regional restaurant chain are researching the amount of money that households i

kap26 [50]

Answer:

The z-score for the group "25 to 34" is 0.37 and the z-score for the group "45 to 54" is 0.25.

Step-by-step explanation:

The data provided is as follows:

25 to 34 45 to 54

1329 2268

1906 1965

2426 1149

1826 1591

1239 1682

1514 1851

1937 1367

1454 2158

Compute the mean and standard deviation for the group "25 to 34" as follows:

$\bar x=\frac{1}{n}\sum x=\frac{1}{8}\times [1329+1906+...+1454]=\frac{13631}{8}=1703.875\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{8-1}\times 1086710.875}=394.01$

Compute the z-score for the group "25 to 34" as follows:

$z=\frac{x-\bar x}{s}=\frac{1851-1703.875}{394.01}=0.3734\approx 0.37$

Compute the mean and standard deviation for the group "45 to 54" as follows:

$\bar x=\frac{1}{n}\sum x=\frac{1}{8}\times [2268+1965+...+2158]=\frac{14031}{8}=1753.875\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{8-1}\times 1028888.875}=383.39$

Compute the z-score for the group "45 to 54" as follows:

$z=\frac{x-\bar x}{s}=\frac{1851-1753.875}{383.39}=0.25333\approx 0.25$

Thus, the z-score for the group "25 to 34" is 0.37 and the z-score for the group "45 to 54" is 0.25.

8 0

2 years ago

Julie knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help her see if c

Mamont248 [21]

Answer:

-3.64

Step-by-step explanation:

6 0

2 years ago

Given the function f(x) = −3x3 + 9x2 − 2x + 3, what part of the function indicates that the left end starts at the top of the gr

shutvik [7]

Answer: The correct option is, The coefficient of the first term.

Step-by-step explanation:

The given function is,

$f(x)=-3x^3+9x^2-2x+3$

End behavior of the polynomial function : It is defined as the graph of f(x) as x approaches $+\infty$ and $-\infty$ .

The end behavior of the graph depends on the leading coefficient and degree of the polynomial.

As, the degree of the polynomial is '3'. So, the leading coefficient will determine the structure of the graph.

Therefore, the coefficient of the first term will indicate that the left end starts at the top of the graph.

The graph is also shown below.

5 0

2 years ago

Read 2 more answers

You wish to have $200,000 at the end of twenty years. In the last five years, you withdraw $1,000 annually at a rate of 3.8% com

LuckyWell [14K]

Answer:

$9,056.50

Step-by-step explanation:

3 0

2 years ago

Aimee is flying a plane for the first time! The air traffic controller tells her to fly at 500 m above the ground or higher. Wri

DanielleElmas [232]

We are given in this item that the elevation required for flying a plane is 500 m or higher. This concept can also be expressed as, ''elevation must be at least 500m''. Further, this can be expressed as,
''elevation should be greater than or equal to 500m''

If this is to be translated to the mathematical inequality, the answer would be,
h ≥ 500 m

4 0

2 years ago