3 years ago

I need help with I keep getting stuck

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

4 0

I think the Answer is C

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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

Elana runs for 28 seconds and finishes at 250 meters .what is her velocity

Sophie [7]

Answer:

8.9m/s

Step-by-step explanation:

Time= 28s

Displacement= 250m

Velocity=?

Velocity (v) = displacement (d)/ Time (t)

V= 250/28

V=8.9m/s

OR YOU CAN APPROXIMATE IT

V=8.928

YOU CAN APPROXIMATE IT TO

V=8.93m/s

3 0

3 years ago

Helppppppp mathhhhhh

Maru [420]

5/3 is you answer!?!?!

7 0

4 years ago

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How to solve y^2=144/169

jekas [21]

Find the square root of both sides
√y²= √(144/169)

y= √144 / √169
y= 12/13

Final answer: y=12/13

7 0

3 years ago

Two-fifths of the students in Mrs. Navares fifth grade class ride the bus to school. if there are 25 students in her class, how

butalik [34]

You do a multiplication of 2/5 times 25 and you get 50/5 which is equal to 10. So @0 students ride the school bus.

8 0

3 years ago

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