WILL MARK BRAINLIEST IF YOU ARE CORRECT!

Mathematics

2 answers:

almond37 [142]2 years ago

4 0

Mmmmmmmmmmmmmmmmmhvggggghjk

alina1380 [7]2 years ago

3 0

<h3>Answer: Choice C</h3>

There is sufficient evidence to support the claim that the standard deviation of time all women spend washing their hair in the morning is 15 seconds

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Explanation:

First focus on "You find the initial conclusion of your test fails to reject the null hypothesis"

The key thing to pull out from that is "fail to reject the null hypothesis". Failing to reject means we basically "accept", more or less, the null. We have no other choice until more data comes along to reject the null.

The claim is " the standard deviation of time all women spend washing their hair in the morning is 15 seconds." which is where the null hypothesis is made. In terms of symbols, we would write $\sigma = 15$ . The alternate hypothesis is $\sigma \ne 15$ . The symbol $\sigma$ is the greek letter sigma that represents the population standard deviation.

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nevsk [136]

$10x - 5 < - 10(8x - 2) + 3 \\ 10x < - 80x + 20 + 8 \\ 90x < 28 \\ x < \frac{14} {45}\\x \in (-\infty,\frac{14}{45} )$

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2 years ago

32.54 = 4.313805 + 0.3012446(x)

Ghella [55]

32.54=4.313805+0.3012446(x)

$\frac{32.54 - 4.313805}{0.3012446}$

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2 years ago

you mix (5)/(8)of a cup of wheat flour with 1 (3)/(4)cups of white flour. Do you have enough flour for a recipe that calls for 2

swat32

5/8+1 3/4
5/8+7/4(turned into improper fraction)
5/8+14/8=19/8=2 3/8
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no you do not have enough flour you need 1/8 of a cup more.

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2 years ago

AMC 10/12 Student Practice Questions

a_sh-v [17]

Answer:

$\mathrm{C.\:}25$

Step-by-step explanation:

Notice how each congruent square is divided into four equal parts. Since each square has four parts and there are four squares, there are $16$ of these parts in total. Because each of these parts make up $\frac{1}{4}$ of each square, all parts are equal. Therefore, you can count the total number of shaded parts to get your percentage.