The null and alternative hypotheses

For each pair of hypotheses that follows, decide whether H₀ and H₁ are set up correctly as the null and alternative hypotheses for a hypothesis test. If so, select "Valid" from the drop down menu. If not, select "Invalid". (4 pairs total)

1 H₀: μ ≠ 81 2 H₀: M = 21
H₁: μ = 81 H₁: M ≠ 21
3 H₀: μ = 117 4 H₀: µ = 239
H₁: μ ≠ 116 H₁: µ ≠ 239
You evaluate the (alternative hypothesis OR null hypothesis) ??? by assuming that it is true and testing the reasonableness of this assumption by calculating the probability of getting the results if chance alone is operating.

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

include a picture of the drawing in order for me to

step-by-step explanation:

10

step-by-step explanation:

part a: 1.08

part b: 27.59