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Rufina [12.5K]
3 years ago
8

A cell phone company tests 110 cell phones and finds that 4 of them have defects. Out of 550 cell phones, how many would you exp

ect to have defects?
Mathematics
1 answer:
Ivan3 years ago
7 0

Answer:

<em>330</em>

Step-by-step explanation:

So You have to add 110+550 cell phones because they both have defects and by finding out how many more have defects you have to multiply by 4 to get 330 phones so It will look like this. < 110+550*4 because the problem is asking you to figure out how <em> many more cell phones have defects so by multiplying by 4 that would be your answer. I hope this helped!!! (":</em>

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IF YOU ARE SMART DO THIS PROBLEM NOT PEOPLE WHO DONT WANN HELP
Alexxandr [17]

Answer:

3.28ft

Step-by-step explanation:

Rectangular Prism Formula:

l*w*d = v

(plug in values)

2.6*1.4*d=11.94

3.64*d=11.94

d = 3.28ft

5 0
3 years ago
I need help with this question
AlexFokin [52]
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Find the two intersections of the lines. The value of x of the intersections will satisfy the system of equations.
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2 years ago
A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting. It is
yan [13]

Answer:

No, there is not sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting.

This means that the null hypothesis is:

H_{0}: \mu = 434

It is believed that the machine is underfilling the bags.

This means that the alternate hypothesis is:

H_{a}: \mu < 434

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

434 is tested at the null hypothesis:

This means that \mu = 434

A 9 bag sample had a mean of 431 grams with a variance of 144.

This means that X = 431, n = 9, \sigma = \sqrt{144} = 12

Value of the test-statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{431 - 434}{\frac{12}{\sqrt{9}}}

z = -0.75

P-value of the test:

The pvalue of the test is the pvalue of z = -0.75, which is 0.2266

0.2266 > 0.01, which means that there is not sufficient evidence to support the claim that the bags are underfilled.

7 0
3 years ago
F(n) = f(n – 1) + f(n – 2); f(1) = 2; f(2) = 1.
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f(n) is the nth term

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The term just before nth term is f(n-1)

The term just before the (n-1)st term is f(n-2)

----------------

For example, let's say n = 3 indicating the 3rd term

n-1 = 3-1 = 2

n-2 = 3-2 = 1

So f(n) = f(n-1) + f(n-2) turns into f(3) = f(2) + f(1). We find the third term by adding the two terms just before it.

f3) = third term

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f(1) = first term

8 0
3 years ago
Ratio of 1/16 to 1/16
aleksklad [387]
Answer 1:16 is the answer
7 0
3 years ago
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