3 years ago

The equation s x  2 5 can be used to estimate the speed, s, of a car in miles per

1 answer:

4 0

Wouldn't it simply be 90 x 25?

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Aliun [14]

Let's see

so you have to add the bottom numbers and the top numbers then add the whole numbers so it's 23 15\28

3 0

3 years ago

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

iVinArrow [24]

17% of $200 is $34

Hope that helps.

6 0

3 years ago

Vadim26 [7]

They hiked more on the 2nd day because they are retracing their steps.

8 0

3 years ago

Margaret [11]

Answer:

false

Step-by-step explanation:

i think the answer is false srry if i am wrong

3 0

2 years ago