Ask question

Ask question

All categories

Lady bird [3.3K]

3 years ago

14

= Solving a word problem with two unknowns using a linear... A washer and a dryer cost $650 combined. The washer costs $100 less

than the dryer. What is the cost of the dryer?

1 answer:

nikdorinn [45]3 years ago

7 0

Answer:

Washer 225

Dryer 425

.....

You might be interested in

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

If georgia has 8 watermelons and ate 2, how many does she have now

Sedaia [141]

Step-by-step explanation:

Now she has 6 watermelons.

4 0

3 years ago

Read 2 more answers

The map shows a typical flight path between Seattle and London. Why does the path go over the Arctic? A) It is the shortest path

Triss [41]

The answer to the given question above would be option A. Based on the given map shown above which is a typical flight path between Seattle and London, the reason why the path goes over the Arctic is that, it is the shortest path. Hope this answers your question.

4 0

3 years ago

Read 2 more answers

12(4^3−6⋅3^2) solve please fast

Marrrta [24]

The answer is 291.72

3 0

3 years ago

Read 2 more answers

(5,2) (8,2), (8,5) and (?,?)

Luba_88 [7]

<h2>Answer:</h2><h2>(5,5)</h2><h2 /><h2>Hope this helps!!</h2><h2></h2>

6 0

3 years ago