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2 years ago

Which expressions are equivalent to 1/5 x 1/5 x 1/5 x 1/5 Choose 2 answers:

Mathematics

1 answer:

nordsb [41]2 years ago

6 0

Answer:

You didn't say which two answers to choose from but they could possibly be 5^-4, (1/5)^4

Step-by-step explanation:

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You have drawn a simple random sample of 36 college students, asking each student how much rent they pay per month. You obtain a

Karo-lina-s [1.5K]

Answer:

$573-1.690\frac{22}{\sqrt{36}}=566.8033$

$573+1.690\frac{22}{\sqrt{36}}=579.1967$

And the 90% confidence interval would be between [566.80 and 579.20]

Step-by-step explanation:

Information given

$\bar X=573$ represent the sample mean

$\mu$ population mean (variable of interest)

s=22 represent the sample standard deviation

n=36 represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=36-1=35$

The Confidence level is 0.90 or 90%, the significance would be $\alpha=0.1$ and $\alpha/2 =0.05$ , and the critical value for this case would be $t_{\alpha/2}=1.690$

And replacing we got:

$573-1.690\frac{22}{\sqrt{36}}=566.8033$

$573+1.690\frac{22}{\sqrt{36}}=579.1967$

And the 90% confidence interval would be between [566.8033 and 579.1967]

6 0

3 years ago

In a recent town election, 1,860 people voted for either candidate A or candidate B for the position of supervisor.

Lera25 [3.4K]

837.

EXPLANATION:

if candidate A recieved 55% of the votes,

Then candidate B recieved 45% of the votes, because it must equal 100%

45% of 1860 is 837.

Hope this helpz!

4 0

2 years ago

Cody hiked at an average speed of 1 mile per hour for 5 hours on Saturday. He hiked an average speed of 2 miles per hour for 3 h

ivanzaharov [21]

Answer:

Step 1: Multiply 1x5 Step 2: Multiply 2x3 Step 3: Add the two products

d=v*t

d=distance

v=velocity(speed)

t=time

distance is equal to the product of velocity and time, equation form;

d=vt

Any questions please feel free to ask. Thanks!

3 0

3 years ago

Arianna runs up 4 flights of stairs then runs down 4 flights of stairs. Does this situation represent additive inverses

dexar [7]

Answer:

Yes because she ends up back at zero

8 0

2 years ago

To find g(x + 7), what do you substitute for x in the function g(x) = 4x - 2?

AlexFokin [52]

Answer: x+7

Step-by-step explanation:

g(x) = 4x - 2

g(x+7)=4(x+7)-2

Substitute (x+7)

8 0

2 years ago