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igor_vitrenko [27]
3 years ago
15

Can someone solve this for me.

Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
4.
A: yes
B: no
C: yes
D: no
You’ll have to do the work for 5 sorry
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What is the confidence interval estimate of the population mean percentage change in the price per share of stock during the fir
I am Lyosha [343]

Answer:

(-0.1059 ; - 0.0337)

Step-by-step explanation:

The data table is attached in the picture below:

These is a matched pair design ; which requires taking the difference of the two values for each sample :

The mean and standard deviation of the difference will be used to construct the confidence interval :

The mean of difference, dbar = Σx/n = - 0.0698

The standard deviation of difference, Sd ;

Sd = [√Σ(d - dbar)²/(n-1)] = 0.1054

n = sample size = 25

The confidence interval :

dbar ± [TCritical * Sd/√n]

Tcritical at 90% ; df = n -1 = 25 -1

Tcritical(90% , 24) = 1.1711

C.I = - 0.0698 ± (1.711 * 0.1054/√25)

C.I = - 0.0698 ± 0.0361

C.I = (-0.1059 ; - 0.0337)

5 0
2 years ago
What is 3w(2+4x-5+y)
Mkey [24]

Answer:

-9w+12wx+3wy

Step-by-step explanation:

just distribute 3w through the parentheses

3 0
3 years ago
Find the inverse of the function y = x2 – 12
vivado [14]

Answer: y=\sqrt{x+12}

Step-by-step explanation:

I hope you mean y = x² - 12 and not y = 2x - 12.

You switch the y and x variables:

x = y² - 12

And solve for y:

x + 12 = y²

y=\sqrt{x+12}

7 0
3 years ago
What is 4.8 X -0.59?
melisa1 [442]

Answer:

<h2><em>−2.832</em></h2>

I hope this helps you! :)

5 0
3 years ago
Read 2 more answers
Trinh wants to save 1,250 total after 15 months to put towards a vacation
zlopas [31]

Answer:

good for them

Step-by-step explanation:

i need more of the problem though

6 0
2 years ago
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