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miss Akunina [59]
3 years ago
5

Emily buys a cage and two bowls for $54. The cage cost 40$. Each bowl cost the same amount. What is the price of one bowl? Expla

in the steps you used to solve the problem.
Mathematics
1 answer:
Taya2010 [7]3 years ago
5 0

Answer:

$7

Step-by-step explanation:

a) First let's organize the information:

    The cage cost $40

    two bowls cost the same

    the total was $54

b) Put it as an equation

    40+x+x= 54

c) we will subtract 54-40 and get 14

d) divide 14 by 2 and get 7 for the cost of each bowl.

Hope you understand it ;)

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A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are centimeters on a pain sca
blondinia [14]

The confidence interval for mean of the "before-after" differences is \fbox{(-0.4037,1.8037)}

Further explanation:

Find the difference between the before pain and the after pain.

Difference = before-after

Kindly refer to the Table for the difference of between the before and after pain.

Sum of difference = 5.6

Total number of observation = 8

Mean of difference = 0.7

Sample standard deviation s = 1.3201

Level of significance = 5\%

Formula for confidence interval = \left( \bar{X} \pm t_{n-1, \frac{\alpha}{2}\%} \frac{s}{\sqrt{n}} \right)

confidence interval = \left( 0.7 \pm t_{8-1, \frac{5}{2}\%} \frac{1.3201}{\sqrt{8}} \right)

confidence interval = \left( 0.7 \pm t_{7, \frac{5}{2}\%} \frac{1.3201}{\sqrt{8}} \right)

From the t-table.

The value of t_{7, \frac{5}{2}\%=2.365

Confidence interval = ( 0.7 \pm 2.365}\times \frac{1.3201}{\sqrt{8}}) \right)

Confidence interval = \left( 0.7 - 2.365}\times \0.4667,0.7 + 2.365}\times \0.4667) \right

Confidence interval = (0.7-1.1037,0.7+1.1037)

Confidence interval = \fbox{(-0.4037,1.8037)}

The 95\% confidence interval tells us about that 95\% chances of the true mean or population mean lies in the interval.

Yes, the hypnotism appear to be effective in reducing pain as confidence interval include includes the positive deviation from the mean.

Learn More:

1. Learn more about equation of circle brainly.com/question/1506955

2. Learn more about line segments brainly.com/question/909890  

Answer Details:

Grade: College Statistics

Subject: Mathematics

Chapter: Confidence Interval

Keywords:

Probability, Statistics, Speed dating, Females rating, Confidence interval, t-test, Level of significance , Normal distribution, Central Limit Theorem, t-table, Population mean, Sample mean, Standard deviation, Symmetric, Variance.

7 0
3 years ago
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( PLEASE HELP) The ferry family rented 50 chairs for $150. Which expression can be used to find the cost per chair?
jasenka [17]
$150/50 the answer is B
4 0
3 years ago
Read 2 more answers
Is the sqrt of 1 - sin^2 theta = cos theta true? If so, in which quadrants does angle theta terminate?
Genrish500 [490]

Answer:

Answer: The answer is option B.

Step-by-step explanation:

Here,

We have,

{ \sin }^{2}  theta \: +  {cos}^{2}theta  = 1

{cos}^{2} \: theta  = 1 -  {sin}^{2}  \: theta

cos \: theta =  \sqrt{1 -  { \sin }^{2}theta }

So, it's true; and it lies in quadrant 1 and 4.

The reason according to the "CAST" rule cos theta is in 1st and 3rd quadrant cos theta is positive.

7 0
3 years ago
in triangle TVY the measure of angle T is 20 The measure of angle V is 25 The measure of angle W Is 135 what is combined measure
Akimi4 [234]

Answer:

The answer is 180°

Step-by-step explanation:

Replace the variables in with your angle measurements and add them up. Triangles should end up with a 180° all combined.

6 0
3 years ago
Use two unit multipliers to convert 56 centimeters to feet
krek1111 [17]
You would do 56 centimeters times 1 inch per 2.54 centimeters times 1 foot per 12 inches. 

Mathematically, it will look like (56 * 1) / (2.54* 12) = approximately 1.837

In sentence form: There are approximately 1.837 feet in 56 centimeters. 
6 0
3 years ago
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