3 years ago

true or false the standard error of the sum and the standard error of the average both get smaller as the sample size increases

Mathematics

1 answer:

Murrr4er [49]3 years ago

6 0

Answer:

false

Step-by-step explanation:

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A particle, initially at rest, moves along the x-axis such that its acceleration at time t > 0 is given by a(t) = 6cos(t). At

Rom4ik [11]

a. By the fundamental theorem of calculus, the velocity function is

$v(t)=v(0)+\displaystyle\int_0^ta(u)\,\mathrm du$

The particle starts at rest, so $v(0)=0$ , and we have

$v(t)=\displaystyle\int_0^t6\cos u\,\mathrm du=6\sin u\bigg|_0^t=6\sin t$

Then the position function is

$x(t)=\displaystyle x(0)+\int_0^tv(u)\,\mathrm du$

with $x(0)=6$ , so

$x(t)=6+\displaystyle\int_0^t6\sin u\,\mathrm du=6-6\cos u\bigg|_0^t=12-6\cos t$

b. The particle is at rest whenever $v(t)=0$ ; this happens for

$6\sin t=0\implies \sin t=0\implies t=n\pi$

where $n$ is any integer.

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3 years ago

Simplify:<br> 2/3 divided by 3 3/4

Nat2105 [25]

Answer:

$\frac{8}{45}$

Step-by-step explanation:

convert mixed number to improper fractions

3 $\frac{3}{4}$ = $\frac{15}{4}$

$\frac{\frac{2}{3} }{\frac{15}{4} }$

apply the fraction rule:

$\frac{2 * 4}{3 * 15}$

multiply the numbers

$\frac{8}{45}$

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1 year ago

Manuel traveled 22 hours nonstop to mexico, a total of 9090 miles. he took a train part of the way, which averaged 5050mph, a

Anna35 [415]

Bro stop play this easyyy

3 0

3 years ago

Plz help I just need this question

Vesna [10]

It’s 20 degrees because all triangles are all equal up to 180° and so if you add 135° to 25° you get 160° and so minus 160 from 180 and you’ll get 20°

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2 years ago

Jin ran 15.2 miles over the weekend.he ran 6.75 miles on saturday.how many miles did he run on saturday?

Ivan

For order you to solve that all you half to do is subtract 6.75 from 15.2.

5 0

3 years ago

Read 2 more answers