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4 years ago

Solve. 4(a+2)=14-2(3-2a) A. -2 B. All real numbers C.-1 D. No solution

Mathematics

2 answers:

Effectus [21]4 years ago

6 0

Answer:

The answer is (B) = All real numbers

Step-by-step explanation:

mark as brainliest!!!!!!!!

White raven [17]4 years ago

3 0

4a+8=14-6+4a. 4a+8=8+4a so I think it's B

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You are interested in the psychological implications of high SES. You read a paper that claims that higher social class people b

dimaraw [331]

Answer:

Option C. The real effect is 0.1

Step-by-step explanation:

The complete question is

You are interested in the psychological implications of high SES. You read a paper that claims that higher social class people behave more unethically. The paper reports a significant difference in the propensity of high and low SES people behaving unethically. The significance level of this study was 0.05, the ratio of true to false effects in this field is 0.35, but the author was anxious to issue a press release and prepare his TED talk, so power is low, at 0.1. The probability that this study reports a real effect is

A. 0.58

B. 0.95

C. 0.1

D. 0.35

E. 0.41

Solution

Ratio of true to false effects i.e T/F = 0.35

The power of the study indicates the real effect of the study and hence despite the true/false ration being 0.35 and the significance level of study is 0.05, the real effect of the study would be 0.1

Hence option C is correct

8 0

3 years ago

Why is school so stupid???

mestny [16]

Answer:

why is school stupid?today i will tell you bc you have to learn and to work

Step-by-step explanation:

Can you plz give the brain thingy

3 0

3 years ago

Read 2 more answers

The length a rectangle is 2 cm grater than its width .the area is the rectangle is 80 cm square what is the width of the rectang

maw [93]

Answer:

Step-by-step explanation:

If breadth =x

length =x+2

Area =length *breadth

Area =x(x+2)=80

X^2+2x-80=0

X^2 +10x - 8x - 80=0

X(x+10)- 8(x+10)=0

(X-8)(x+10)=0

X=8 or x=-10

X=8(since breadth cannot be a negative value x cannot be negative)

4 0

4 years ago

(-2, -1) and (-4, -7) Find the slope of the line that passes through the two given points

MrRa [10]

Answer:

m=3

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,608 kilowatt hours (kWh

Marat540 [252]

Answer:

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 10,608 kWh of electricity this year.

Given that the size of the sample n = 187

Given that mean of sample x⁻ = 10737 kWh

The Standard deviation of the Population = 1220kWh

Level of significance = 0.05

The critical value (Z₀.₀₅)= 1.96

Step(ii):-

Null Hypothesis: H₀:μ > 10608 kWh

Alternative Hypothesis: H₁: μ < 10608kWh

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{10737- 10608 }{\frac{1220}{\sqrt{187} } }$

Z = 1.4460

Final answer:-

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average.

3 0

3 years ago