1+1 then divide by 8

Mathematics

1 answer:

Gemiola [76]3 years ago

4 0

Answer:

0.25

Step-by-step explanation:

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Two variables have a positive linear correlation. Does the dependent variable increase or decrease as the independent variable

andriy [413]

When two variables have a positive linear correlation, the dependent variable increases as the independent variable increases. So when the independent variable decreases, the dependent variable decreases as well. Both variables decrease and increase simultaneously.

8 0

4 years ago

what is the value of the the expression x+5/y^2 for x = 2/3 and y= 1/3. A. 17/27 B. 17. C.34. D.51

uysha [10]

Answer:

Step-by-step explanation:

x + 5/y^2

x = 2/3

y = 1/3

2/3 + 5 / (1/3)^2 Expand (1/3)^2

2/3 + 5 / (1/9) Put a 1 underneath the 5

2/3 + 5/1 / (1/9) Invert and multiply the second expression

2/3 + 5/1 * 9 Simplify 5/1

2/3 + 5* 9 Combine

45 2/3

I'm not getting any of these. It's possible I'm misreading the question, but what you've given is the result I got. All I can suggest is that you ask your teacher how this is done.

5 0

2 years ago

A facilities manager at a university reads in a research report that the mean amount of time spent in the shower by an adult is

Zolol [24]

Answer:

A) Null Hypothesis;H0: μ = 5

Alternative Hypothesis;Ha: μ ≠ 5

B) test statistic = -2.1226

C) p-value = 0.0598

D) Option A is correct

Step-by-step explanation:

We are given;

x = 4.52 minutes

s = 0.75 minutes

μ = 5 minutes

n = 11

degree of freedom = n - 1 = 11 - 1 = 10

A) The hypotheses are;

Null Hypothesis;H0: μ = 5

Alternative Hypothesis;Ha: μ ≠ 5

B) t-statistic = (x - μ)/(s/√n)

(4.52 - 5)/(0.75/√11) = -2.1226

C) From the t-score calculator results attached, the p-value is approximately 0.0598.

D) The P-value of 0.0598 is is greater than the significance level of 0.01, thus we fail to reject the null hypothesis, and we say that the result is statistically nonsignificant. So option A is correct.