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UNO [17]
3 years ago
9

Pleasssee helppp I’m gonna going to fail ):

Mathematics
1 answer:
stich3 [128]3 years ago
5 0

Answer:

The value of a and b is given. All u hv to do is just place the values in the places of a and b. The value of a= 3.1 and b= 7.3.

5i) a+b

     3.1+7.3

     =10.4

ii) b-a

   7.3-3.1

    =4.2

5 and 6 are both similar. Just place the numbers instead of the letters

6i) x+y

    5+7

    =12

ii) y-x

   7-5

   =2

iii) x/y

    5/7

    =0.714

There u go :D

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What is the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within 1 week of the
Olegator [25]

The question is not complete so I will answer it with an example and a few assumptions. Follow the steps to find the answer to your question.

Important to note:

Your question is a z-scores problem

Assume that for the population of unemployed individuals the population standard deviation is 4 weeks.

Thus, we need to find the z-value.

The z-value is the sample mean decreased by the population mean, divided by the standard deviation that we assumed. So, we have:

z = \frac{\bar x - \mu}{\sigma / \sqrt{n} }  = \frac{\pm 1}{4/\sqrt{60} }  \approx \pm 1.94

P = P(-1 < \bar x - \mu < 1) = P(-1.94 < z < 1.94) = 1 - 2P(z < -1.94)

Using any standard negative z-scores table, we can find that:P(z < -1.94) = 0.0262

Thus, we get:

P(| \bar x - \mu | < 1) = 1 - 2 \times 0.0262 = 1 - 0.0524 = 0.9476

Therefore, the probability that a simple random sample of 60 unemployed individuals will provide a sample mean within 1 week of the population mean is 0.9476

Answer:

0.9476

7 0
4 years ago
How to do this &amp; what the answer is PLSSSSS HELP
Contact [7]

Answer:

<em>We</em><em> </em><em>can</em><em> </em><em>say</em><em> </em><em>that</em>

<em> </em>3x + x + 8 = 32

<em>So</em><em>:</em><em> </em>

3x + x + 8 = 32

4x = 32 - 8

4x = 24

x = 24/4

<em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>6</u></em>

6 0
3 years ago
Can you do this one pls
Westkost [7]

Answer:

you should buy 2.5 okay that is more cheaper then the other ones

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
1/2n+9=27 round the nearest hundredth
strojnjashka [21]
1/2n + 9 = 27 
         - 9   -  9 
----------------------
1/2n = 18 
------   --------
1/2      1/2n

n = 36
4 0
4 years ago
Read 2 more answers
How do I verify this?
Mashcka [7]

Answer:

sec²-2scθ+tanθ+tan²θ=1-sinθ/1+sinθ

sec²-2scθ+tanθ+tan²θ

= 1+sin²θ-2sinθ/cos²θ

=-1+sinθ/1+sinθ

=1-sinθ/sinθ+1

1-sinθ/sinθ+1=-1+sinθ/1+sinθ True

6 0
3 years ago
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