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Rebecca is a real estate agent who would like to find evidence supporting the claim that the population mean market value of hou

Effectus [21]

Answer:

There is enough evidence at the α-: 0.05 level of significance to support the claim that the true population mean market value of houses in the neighborhood where Rebecca works is greater than $250,000.

Step-by-step explanation:

We are given that Rebecca randomly selects 35 houses in the neighborhood and finds that the sample mean market value is $259,860 with a sample standard deviation of $24.922.

Let $\mu$ = population mean market value of houses in the neighborhood.

So, Null Hypothesis, $H_0$ : $\mu$ = $250,000 {means that the population mean market value of houses in the neighborhood where she works is equal to $250,000}

Alternate Hypothesis, $H_A$ : $\mu$ > $250,000 {means that the population mean market value of houses in the neighborhood where she works is greater than $250,000}

The test statistics that would be used here One-sample t-test statistics because we don't know about population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean market value = $259,860

s = sample standard deviation = $24,922

n = sample of houses = 35

So, the test statistics = $\frac{259,860-250,000}{\frac{24,922}{\sqrt{35} } }$ ~ $t_3_4$

= 2.34

The value of t-test statistic is 2.34.

Also, P-value of the test statistics is given by;

P-value = P( $t_3_4$ > 2.34) = 0.0137

Since our P-value is less than the level of significance as 0.0137 < 0.05, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that the population mean market value of houses in the neighborhood where she works is greater than $250,000.

7 0

4 years ago

I need you guys help

yanalaym [24]

a^2 = c^2 - b^2

b = 6

c = 10

a^2 = 10^2 - 6^2

6^2 = 36

10^2 = 100

a^2 = 100 - 36

100 - 36 = 64

a^2 = 64

8 * 8 = 64

a = 8

6 0

4 years ago

Sally's summer punch recipe is a combination of lemonade and fruit punch. Sally uses 6 cups of lemonade for every 8 cups of frui

andre [41]

Answer:

August made the recipe using the incorrect ratio

Step-by-step explanation:

* Lets explain how to solve the problem

- Sally's recipe is a combination of lemonade and fruit

- Sally uses 6 cups of lemonade for every 8 cups of fruit

∵ Sally uses 6 cups of lemonade for every 8 cups of fruit

∴ The ratio of sally recipe is 6 : 8

- Simplify the terms of the ratio by divide them by 2

∴ The ratio of sally recipe is 3 : 4

- August made a recipe with 35 cups of liquid total

- He made 15 cups of them lemonade

∵ The total number of cups August made is 35

∵ 15 of them are lemonade

∴ The number of fruit cups = 35 - 15 = 20 cups

∵ August mad 15 cups of lemonade for every 20 cups of fruit

∴ The ratio of August recipe is 20 : 15

- Simplify the terms of the ratio by divide them by 5

∴ The ratio of August recipe is 4 : 3

∵ The ratio of Sally recipe is 3 : 4

∵ The ratio of August recipe is 4 : 3

∵ The ratio 3 : 4 ≠ the ratio 4 : 3

∴ August made the recipe using the incorrect ratio

6 0

3 years ago

Read 2 more answers

I NEED A SERIOUS ANSWER. THANK YOU!!

pashok25 [27]

I really hope this helped you. If it did, could u plz mark me as brainliest?

8 0

3 years ago

I need help with this question.

taurus [48]

Answer:

B ;))))))

Step-by-step explanation:

3 0

3 years ago