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slamgirl [31]
2 years ago
10

" align="absmiddle" class="latex-formula">
need help please ​
Mathematics
1 answer:
Ann [662]2 years ago
7 0
You would add 91+9 and you would get 100. You would then square root the 100 and get 10
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Consider H0: μ = 45 versus H1: μ < 45. A random sample of 25 observations produced a sample mean of 41.8. Using α = .025 and
a_sh-v [17]
Given
H0: \ \mu=45 \\  \\ H1: \ \mu\ \textless \ 45
This is a one-tailed test.

z= \frac{41.8-45}{6/ \sqrt{25} } = \frac{-3.2}{6/5} = \frac{-3.2}{1.2} =-2.6667

P(z\ \textless \ -2.6667)=0.00383

Since the p-value of the sample statistic (0.00383) is less that the significant level (0.025), we reject the null hypothesis.
5 0
3 years ago
Helia invested 4000 AED for 3 years with a compound interest rate of 1.5%, Calculate the worth of her investment at the end of t
sineoko [7]

Answer:

4180 AED

Step-by-step explanation:

Given data

Principal= 4000

Time= 3 years

Rate= 1.5%

The compound interest expression is given as

A= P(1+r)^t

substitute

A=4000(1+0.015)^3

A= 4000(1.015)^3

A= 4000*1.045

A= 4180

Hence the worth will be  4180 AED

6 0
3 years ago
What is the slope of the line????
Lisa [10]
Y= -4/5x -1.5

I believe this right!
5 0
2 years ago
Solve for b.<br> - 32 + 106 = -22
Eddi Din [679]

Answer:

-30+10b=-22

32-22=10b

10b=10

-32+10=-22

hope it helps

6 0
3 years ago
Help me please
earnstyle [38]

Answer: -2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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