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BARSIC [14]
2 years ago
14

Math question please help me

Mathematics
1 answer:
Vinvika [58]2 years ago
7 0

Answer:

C

Step-by-step explanation:

There are 140 women in the 5% sample. to find an estimate of all the women we can multiply but by 20. 5% x 20 = 100%. 140 x 20 = 2,800.

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Which equation is in standard form and represents a line with slope –1 through the point (–3, 5)?
likoan [24]
I hope this helps you


slope = -1 x'= -3 y'=5


slope. (x'-x)=y'-y


-1. (-3-x)=5-y


3+x=5-y


y=2-x

7 0
3 years ago
What is the value of the 5 in the number 7.522
joja [24]
Its 0.5. Which would be in fraction form 5/10 meaning its 5 tenths.
8 0
3 years ago
which is a correct definition for a right angle? a.an angle with a measure that equals the measure of a square corner b.an angle
Sunny_sXe [5.5K]
A. an angle with a measure that equals the measure of a square corner
6 0
3 years ago
A side of the triangle below has been extended to form an exterior angle of 132 degrees. Find the value of x.
Lemur [1.5K]

Answer:

48°

Step-by-step explanation:

m∠x plus 132° equals 180°, so x equals 180 minus 132, or 48°.

6 0
2 years ago
The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a st
madam [21]

Answer:

4.55% probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase.

Since Z > -2 and Z < 2, this outcome is not considered unusual.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

If Z \leq 2 or Z \geq 2, the outcome X is considered to be unusual.

In this question:

\mu = 8.21, \sigma = 1.9

Find the probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase.

This is the pvalue of Z when X = 5. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{5 - 8.21}{1.9}

Z = -1.69

Z = -1.69 has a pvalue of 0.0455.

4.55% probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase.

Since Z > -2 and Z < 2, this outcome is not considered unusual.

8 0
3 years ago
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