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Lelu [443]
3 years ago
14

T=rs + s, for s solve

Mathematics
1 answer:
Greeley [361]3 years ago
5 0
It is t divided by r equals 2s
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The average house price in London in 2017 was £474902
yulyashka [42]

The percentage change in house prices between 2017 and 2018 is -1.13%.

Percentage can be described as a fraction of a number expressed as a number out of hundred. The sign used to represent percentages is %.

In order to determine the percentage change in average house price, the difference between average housing pricing in 2018 and 2017 would be divided by the average house price in 2017 and the result would be multiplied by 100.

Percentage change = [(£469538 -  £474902) /  £474902] x 100 = -1.13%

To learn more about percentages, please check: brainly.com/question/25764815

5 0
2 years ago
A matched pairs experiment compares the taste of instant versus fresh-brewed coffee. Each subject tastes two unmarked cups of co
Bogdan [553]

Answer:

We conclude that the majority of people prefer the taste of fresh-brewed coffee.

Step-by-step explanation:

We are given that of the 50 subjects who participate in the study, 16 prefer the instant coffee.

We have to test the claim that a majority of people prefer the taste of fresh-brewed coffee.

<em />

<u><em>Let p = proportion of the population who prefer fresh-brewed coffee</em></u>

So, Null Hypothesis, H_0 : p \leq 50%     {means that the majority of people does not prefer the taste of fresh-brewed coffee}

Alternate Hypothesis, H_A : p > 50%     {means that the majority of people prefer the taste of fresh-brewed coffee}

The test statistics that would be used here <u>One-sample z proportion statistics;</u>

                        T.S. =  \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion who prefer fresh-brewed coffee = \frac{34}{50} = 0.68

            n = sample of subjects = 50

So, <u><em>test statistics</em></u>  =  \frac{0.68-0.50}{\sqrt{\frac{0.68(1-0.68)}{50} } }  

                               =  2.73

The value of z test statistics is 2.73.

<u>Now, P-value of the test statistics is given by;</u>

         P-value = P(Z > 2.73) = 1 - P(Z \leq 2.73)

                       = 1 - 0.99683 = 0.0032

Since, in the question we are not given with the level of significance so we assume it to be 5%. Now, at 5% significance level the z table gives critical values of 1.645 for right-tailed test.

<em>Since our test statistics is more than the critical value of z, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which </em><u><em>we reject our null hypothesis</em></u><em>.</em>

Therefore, we conclude that the majority of people prefer the taste of fresh-brewed coffee.

4 0
3 years ago
(3x -1) + (2x+1) (x)
almond37 [142]
The answer is X = 6

Because 3 times 2 x is 6x ... then -1 plus 1 is 0 so it levels out and x is 6
3 0
3 years ago
Write two perfect squares that each have a value greater than100 and less than 200
Trava [24]

Answer:

121, 144

Step-by-step explanation:

√121= 11

√144= 12

6 0
2 years ago
Help plz:)))I’ll mark u Brainliest
MArishka [77]
This a right triangle shown above
8 0
3 years ago
Read 2 more answers
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