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3 years ago

9

Identify the four roles prices play in a modern mixed economy. For each role, write a one or two sentence summary that includes

a specific example.

1 answer:

mrs_skeptik [129]3 years ago

6 0

Read more on Brainly.com - h*tps://brainly.com/question/15163719#readmore

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4. It is the pattern that captures something significant or interesting about the data and/or research

Nitella [24]

Answer:

b

Explanation:

patterns catch your attention and make you interested.

8 0

3 years ago

A survey asked 26 adults how many years of education they had. The sample mean was 13.03 with a standard deviation of 3.22. It i

yulyashka [42]

Answer: (11.95, 14.11)

Explanation:

Let x be a random variable that represent the number of years of education.

Given: Sample size : n= 26

Sample mean : $\overline{x}=13.03$

Sample standard deviation : s = 3.22

Significance level : $\alpha=100\%-90\%=10\%=0.1$

Degree of freedom: df = n-1 = 25

Critical t-value for $\alpha=0.1$ and df = 25 will be

$t_{\alpha/2, df}=t_{0.05,25}=1.7081$

90% confidence interval for mean:

$\overline{x}\pm t_{\alpha/2,df}\dfrac{s}{\sqrt{n}}\\\\=13.03\pm (1.7081)\dfrac{3.22}{\sqrt{26}}\\\\=13.03\pm (1.7081)\dfrac{3.22}{5.09902}\\\\=13.03\pm 1.08\\\\=(13.03-1.08,\ 13.03+1.08)\\\\ =(11.95,\ 14.11)$

A 90% confidence interval for the mean number of years of education = (11.95, 14.11)

5 0

3 years ago

Sally, a nine-month-old can retrieve her ball when her mother hides it under a blanket. She has begun to master ________. reflex

frosja888 [35]

Since, Sally, a nine-month-old can retrieve her ball when her mother hides it under a blankets, she has known Object Permanence.

<h3>What Is Object Permanence?</h3>

Object permanence serves as a term that describes the understanding of how items and people still exist even when one can't see or hear them.

Therefore, since the girl can know where the ball was hide , she was mastering Object permanence.

Learn more about Object Permanence at;

brainly.com/question/5589531

3 0

2 years ago

How do citizens of presidential democracies participate in the government

Irina-Kira [14]

Answer:

Abraham Lincoln, Zachary Taylor

Explanation:

Got it right

5 0

3 years ago

Why did Egyptians bury daily objects with the pharaohs and mummify them

stepan [7]

Answer:

Because egyptians believed that the afterlife was similar to the living world

Explanation:

PF Acient Civilizations EXAM

3 0

3 years ago