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mr_godi [17]
2 years ago
15

11. An experiment is set up to study the weights of 45 frogs after they are given a hormone treatment. The population mean is 22

.70 grams with a standard deviation of 2.96 grams.
What is the standard error of the sample mean? Round your answer to the nearest hundredth.

The standard error of the sample mean is approximately (? ).
Mathematics
1 answer:
sveta [45]2 years ago
5 0

Answer: The standard error of the sample mean = 0.44

Step-by-step explanation:

Standard error of the sample mean = \dfrac{\sigma}{\sqrt{n}}<em> , where </em>\sigma = population standard deviation , n= sample size.

Given : n= 45 , \sigma= 2.96 grams

The e standard error of the sample mean =\dfrac{2.96}{\sqrt{45}}

=\dfrac{2.96}{6.7082039325}\\\\\approx\ 0.44

Hence, the standard error of the sample mean = 0.44

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I NEED HELP, I'VE BEEN STUCK ON THIS...Find the volume of this triangular prism. Enter only the numerical part of your answer in
deff fn [24]

Answer:

[see below]

Step-by-step explanation:

Volume of a triangular prism is: V=\frac{1}{2}bhl

We are given the base of 5, the length of 12, and the height of 8. All measurements are in meters.

V=\frac{1}{2}(5*12*8)\\\\V=\frac{1}{2}(480)\\\\V=240

The volume of the prism should be 240 square meters.

4 0
3 years ago
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you have a part time job. you work 3 hours on friday and 6 hours on saturday. you also receive an allowance of $20 per a week. y
klemol [59]
$92/week is the amount of money you gained from work combined with your $20/week allowance money. 

92 - 20 = 72 (total money made per week subtract allowance money leaves money made from work)
Thus, you make $72/week at your part time job.

You work a total of 9 hours. (3hrs on Fri & 6hrs on Sat added together)
72/9 = 8 (total amount of money made divided by the 9 hrs you worked for - gives amount of money you make per hour)
Thus, you make $8/hr at your part time job.


8 0
3 years ago
Solve the system of equations x+y= -13 and 4x + 6y = -72 by combining the<br> equations.
uranmaximum [27]

Answer:

Step-by-step explanation:

Fist you add -13 to 6y and than 4x that should be 69420

8 0
2 years ago
The numbers 0,2,4,6,8,10 are______
sladkih [1.3K]

Answer: even numbers


Plz give brainliest


6 0
3 years ago
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The answer is 35 degrees, but I am unsure of the process in order to get to that answer.
hammer [34]

Answer:

Step-by-step explanation:

Hello There!

So first things first

we need to find the measure of ∠ABD

If you didn´t know the sum of the triangle angles is 180

so to find ∠ABD we subtract the given angles ( 30 and 25) from 180

180-25-30=125

so angle ∠125

Now lets find ∠DBC

∠ABD and ∠ DBC are supplementary angles so the sum of the two angles is 180

So to find ∠DBC we subtract 125 from 180

180-125=55

so ∠DBC = 55

Now we can find the measure of ∠BDC

remember like stated before the sum of all of the angles in a triangle is 180

So to find the measure of ∠BDC we subtract the given angles from 180

180-90-55=35

so we could conclude that ∠BDC = 35

Other ways to solve for ∠DBC:

angle DBC is an exterior angle of ΔABD

the measure of an exterior angle is equal to the sum of the opposite interior angles

so basically ∠DBC = ∠ADB + ∠BAD

30+25=55 so ∠DBC = 55

Other ways to find angle BDC:

Having found the measure of ∠DBA and the other opposite angle we could find ∠BDC

Like stated before the measure of an exterior angle is equal to the sum of the opposite interior angles

basically ∠DBA = ∠BDC + ∠BCA

we have the measures of ∠BCA and ∠DBA so we plug in the values

125=∠BDC+90

isolate the variable by subtracting each side by 90

125-90=35

we´re left with

∠BDC=35

I hope this helps and if you have anymore questions, feel free to ask! :)

4 0
3 years ago
Read 2 more answers
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