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Bad White [126]
2 years ago
13

(Need Help ASAP (Willing to give 10 points for 1 question)

Mathematics
1 answer:
True [87]2 years ago
5 0

Answer:

a) -2 and 4

b) function 2

Step-by-step explanation:

a)

rate of change is rise over run: change in y / change in x.

function 1:

- i will use first 2 pairs of data

- change in y: 5 - 3 = 2

- change in x: -2 - (-1) = -1

-rate of change = 2/-1 = -2

function 2:

- same idea, but find two points on the graph!

- (0,4) and (-1,0) for example! pick easy points

- change in y is 4. chabge in x is 1

- rate of change is 4

b)

function b has greatest rate of change. 4 > -2

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An independent-measures research study was used to compare two treatment conditions with n= 12 participants in each treatment. T
Maurinko [17]

Answer:

(a) The data indicate a significant difference between the two treatments.

(b) The data do not indicate a significant difference between the two treatments.

(c) The data indicate a significant difference between the two treatments.

Step-by-step explanation:

Null hypothesis: There is no difference between the two treatments.

Alternate hypothesis: There is a significant difference between the two treatments.

Data given:

M1 = 55

M2 = 52

s1^2 = 8

s2^2 = 4

n1 = 12

n2 = 12

Pooled variance = [(n1-1)s1^2 + (n2-1)s2^2] ÷ (n1+n2-2) = [(12-1)8 + (12-1)4] ÷ (12+12-2) = 132 ÷ 22 = 6

Test statistic (t) = (M1 - M2) ÷ sqrt [pooled variance (1/n1 + 1/n2)] = (55 - 52) ÷ sqrt[6(1/6 + 1/6)] = 3 ÷ 1.414 = 2.122

Degree of freedom = n1+n2-2 = 12+12-2 = 22

(a) For a two-tailed test with a 0.05 (5%) significance level and 23 degrees of freedom, the critical values are -2.069 and 2.069.

Conclusion:

Reject the null hypothesis because the test statistic 2.122 falls outside the region bounded by the critical values.

(b) For a two-tailed test with a 0.01 (1%) significance level and 23 degrees of freedom, the critical values are -2.807 and 2.807.

Conclusion:

Fail to reject the null hypothesis because the test statistic 2.122 falls within the region bounded by the critical values.

(c) For a one-tailed test with 0.05 (5%) significance level and 23 degrees of freedom, the critical value is 1.714.

Conclusion:

Reject the null hypothesis because the test statistic 2.122 is greater than the critical value 1.714.

6 0
3 years ago
What is the radius with an area of 2.25cm squared?​
vlada-n [284]

Answer:

9 centimeters He said squared And radius...

(づ ̄ ³ ̄)づHave a nice day

8 0
3 years ago
What is the unit rate of 25/11
AnnyKZ [126]
What is the unit rate of 25/11?

25/11

25 ÷ 11 ≈ 2.27

2.27/11

<span>25/11 unit rate it 2.27/1, or 2.27 per 1.</span>

5 0
2 years ago
Your mum has saved $12,000 and has agreed to give you a share. Would you rather have 1/5 or 1/10 ?
zhenek [66]

Hello from MrBillDoesMath!

Answer:

1/5

Discussion:

$12000 * (1/5)   = $2400

$12000 * ( 1/10) = $1200


As 2400 > 1200, (1/5) is the best way to go

Thank you,

MrB

3 0
3 years ago
Read 2 more answers
Write the fraction 21/49 in simplest form
Advocard [28]

Answer:

3/7

Step-by-step explanation:

HCF of 21 and 49 = 7

21 / 49 = (21/7) / (49/7) = 21/7 *7/49 = 3 * 1/7 = 3/7

6 0
3 years ago
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