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Illusion [34]
3 years ago
14

What is 40/100 simplified. I really need to know

Mathematics
1 answer:
marysya [2.9K]3 years ago
8 0

fraction form is 2/5

decimal form is 0.4

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What can you times by 9 to 1296 <br> What can you multiply by 9 to get 1296
Bingel [31]

Answer:

144

Step-by-step explanation:

1296 divided by 9 = 144

9 times 144 = 1296

4 0
3 years ago
PLEASE find the equation for this graph
Verdich [7]
I think it’s y=1/2x-10
6 0
1 year ago
A bottle holds 24 ounces of water. It has x ounces of water in it. <br> what does x=
choli [55]

Answer:

x= how many ounce of water is  in the bottle

Step-by-step explanation:

24 ounces are in the bottle

5 0
3 years ago
Use the normal distribution to find a confidence interval for a difference in proportions p1-p2 given the relevant sample result
9966 [12]

Answer:

a) \hat p_1 -\hat p_2= 0.2-0.35= -0.15

b) ME= 2.58 \sqrt{\frac{0.2(1-0.2)}{60} +\frac{0.8(1-0.8)}{100}} =0.169

c) (0.2-0.35) - 2.58 \sqrt{\frac{0.2(1-0.2)}{60} +\frac{0.8(1-0.8)}{100}} =-0.319  

(0.2-0.35) + 2.58 \sqrt{\frac{0.2(1-0.2)}{60} +\frac{0.8(1-0.8)}{100}} =0.0185  

And the 99% confidence interval would be given (-0.319;0.0185).  

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

p_1 represent the real population proportion 1

\hat p_1=0.2 represent the estimated proportion 1

n_1=60 is the sample size required 1

p_2 represent the real population proportion for 2

\hat p_2 =0.35 represent the estimated proportion 2

n_2=100 is the sample size required for Brand B

z represent the critical value for the margin of error  

Solution to the problem

The population proportion have the following distribution  

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})  

The confidence interval for the difference of two proportions would be given by this formula  

(\hat p_1 -\hat p_2) \pm z_{\alpha/2} \sqrt{\frac{\hat p_1(1-\hat p_2)}{n_1} +\frac{\hat p_2 (1-\hat p_2)}{n_2}}  

Part a

The best estimate is given by:

\hat p_1 -\hat p_2= 0.2-0.35= -0.15

Part b

For the 99% confidence interval the value of \alpha=1-0.99=0.01 and \alpha/2=0.005, with that value we can find the quantile required for the interval in the normal standard distribution.  

z_{\alpha/2}=2.58  

The margin of error is given by:

ME= 2.58 \sqrt{\frac{0.2(1-0.2)}{60} +\frac{0.8(1-0.8)}{100}} =0.169

Part c

And replacing into the confidence interval formula we got:  

(0.2-0.35) - 2.58 \sqrt{\frac{0.2(1-0.2)}{60} +\frac{0.8(1-0.8)}{100}} =-0.319  

(0.2-0.35) + 2.58 \sqrt{\frac{0.2(1-0.2)}{60} +\frac{0.8(1-0.8)}{100}} =0.0185  

And the 99% confidence interval would be given (-0.319;0.0185).  

4 0
3 years ago
Given f (x) = -3 + 5, solve for x when f (x) = -4
bezimeni [28]

The value of x when f(x) = -4 is 3

<h3>How to solve the function?</h3>

The function is given as:

f(x) = -3x + 5

When f(x) = -4, we have:

-4 = -3x + 5

Subtract 5 from both sides

-3x = -9

Divide both sides by -3

x = 3

Hence, the value of x when f(x) = -4 is 3

Read more about functions at:

brainly.com/question/4025726

#SPJ1

4 0
1 year ago
Read 2 more answers
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