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4 years ago

If Susan buys 435 tiles altogether, how many tiles of each color does she buy?

Mathematics

2 answers:

Nat2105 [25]4 years ago

5 0

How many colors are there and what are the colors?

OverLord2011 [107]4 years ago

3 0

I think you might want to reword the question

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A new anxiety medication has been manufactured and a study is being conducted to determine whether its effectiveness depends on

Irina18 [472]

The test statistics is used to determine if the anxiety medication can happen under a null hypothesis

The test statistics that is an appropriate hypothesis test is $z =\frac{0.35 - 0.40}{\sqrt{\frac{0.35(1 - 0.35)}{60} + \frac{0.40(1 - 0.40)}{85}}}$

<h3>How to determine the test statistic</h3>

<u>40 milligrams of medication</u>

Patients = 60

Lower stress level patients = 21

The mean of this medication is:

$\bar x = \frac{x}{n}$

So, we have:

$\bar x_1 = \frac{21}{60}$

$\bar x_1 = 0.35$

<u>75 milligrams of medication</u>

Patients = 85

Lower stress level patients = 34

The mean of this medication is:

$\bar x = \frac{x}{n}$

So, we have:

$\bar x_2 = \frac{34}{85}$

$\bar x_2 =0.4$

The test statistic is then calculated as:

$z =\frac{\bar x_1 - \bar x_2}{\sqrt{\frac{\bar x_1(1 - \bar x_1)}{n_1} + \frac{\bar x_2(1 - \bar x_2)}{n_2}}}$

The equation becomes

$z =\frac{0.35 - 0.40}{\sqrt{\frac{0.35(1 - 0.35)}{60} + \frac{0.40(1 - 0.40)}{85}}}$

Hence, the test statistics that is an appropriate hypothesis test is $z =\frac{0.35 - 0.40}{\sqrt{\frac{0.35(1 - 0.35)}{60} + \frac{0.40(1 - 0.40)}{85}}}$

Read more about test statistic at:

brainly.com/question/15980493

7 0

2 years ago

Find the area of the shaded region in the figure below

kicyunya [14]

Answer:

Area of 9 cm circle = PI*radius^2 = 254.47

Area of 9 cm sircle = PI*4*4 = 50.27

Are of shaded region = 254.47 -50.27 = 204 sq cm

Answer is the bottom one on the list.

Step-by-step explanation:

5 0

3 years ago

Go to Canvas to watch an instructional video and complete the assignment. After watching the video and uploading the assignment

Reptile [31]

This is simply what I wrote for my assignment, sorry I am a bit late.

<em>It was confusing when she took out the negative and postive pairs, but then I soon knew that the negative tiles are like subtracting positive tiles. Then once she got the total I was amazed with how easy it was to find out the value of x.</em>

hope this helps! <3

7 0

3 years ago

1. Conrad spent $48 on art supplies. The canvas for each of his paintings is an additional $2. He plans to sell his paintings fo

Luden [163]

Equation: 48+2p=10p
Answer: P=6
Solution: 48+ 2p=10p
Subtract 2p from both sides. It will then make the equation 48=8p.
Divide both sides by 8 to get p alone. 48/8=6
P=6
:)

5 0

4 years ago

1) Which set contains only values that satisfies the given inequality?

Llana [10]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers