2 years ago

consider the set{-4,-2,0,2}, find the set of ordered pairs determined by the relation less than or equal to

Mathematics

1 answer:

xenn [34]2 years ago

5 0

2 because there at more than just 4-2 but the awnser is 2

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Home Videos Inc. surveys 450 households and finds that the mean amount spent for renting or buying videos is P135 a month and th

adell [148]

SOLUTION:

Case: Hypothesis testing

Step 1: Null and Alternative hypotheses

$\begin{gathered} H_0:\mu=P127.50 \\ H_1:\mu\leq P127.50 \end{gathered}$

Step 2: T-test analysis

$\begin{gathered} t=\frac{\hat{x}-\mu}{\frac{s}{\sqrt{n}}} \\ t=\frac{135-127.5}{\frac{75.25}{\sqrt{450}}} \\ t=2.144 \end{gathered}$

Step 3: t-test with the significance level

$\begin{gathered} t_{\alpha}=? \\ \alpha=0.05 \\ From\text{ }tables \\ t_{0.05}=1.654 \end{gathered}$

Step 4: Comparing

$t>t_{\alpha}$

So tail to reject the null hypothesis. There is enough evidence at a 0.05 level of significance to claim that the mean spent is greater than P127.50.

Final answer:

Yes, there is evidence sufficient to conclude that the mean amount spent is greater than P127.50 per month at a 0.05 level of significance.

6 0

1 year ago

I dont get this simple math 3 2/1÷ 4/3=

mel-nik [20]

uhm I can't help with that... sorry

7 0

3 years ago

Frank brought some milk home from the dairy farm. He was able to pour 12 glasses of milk. Each glass held 1/2 pint of milk.

olga2289 [7]

He brought home 6 pints of milk home
hope it helps

5 0

2 years ago

Identify the slope and the y-intercept of<br> the line with the given equation:<br> 2x+6y=12

Elza [17]

Answer:

The slope is -1/3 and the y-intercept is (0, 2).

Step-by-step explanation:

2x+6y=12

6y=12-2x

6y=-2x+12

y=-2/6x+12/6

y=-1/3x+2

y=mx+b where m=slope and b=y-intercept

5 0

2 years ago

Ava found that 15% of the M&Ms in the bag were blue. If there were 160

Alexandra [31]

Answer:

136

Step-by-step explanation:

160×15%=24

160-24=136

4 0

3 years ago