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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

What is the basic difference between the two forms that society takes in Durkheim? As the word implies, societies that exhibit o

Jobisdone [24]

Answer:

D. Societies that exhibit mechanical solidarity have a simpler division of labor and a group conscience. Societies that exhibit organic solidarity have complex divisions of labor and increased individualism.

Explanation:

The classification of society into the Mechanical and Organic was done by a Sociologist named Emile Durkheim. From his classification of society, the Mechanical type of society is a society that relies on the sameness or homogeneity of people. He reasoned that in this type of society, people have similar interests, in terms of religion, way of life and education. They had a simple division of labor and a group or collective conscience. This kind of society can be found in rural settings.

The society that exhibits Organic solidarity, however, relies on the interdependence of people and what they do. This society exists on the basis that people rely on each other to survive. For, example we all rely on the services of teachers, doctors, and other professions. This society is found in urban or more advanced settings. There is a complex division of labor and increased individualism in this society.

3 0

3 years ago

The beatles' matching outfits of suit jackets and long ties were likely insisted upon by _______ to give them a more professiona

AnnZ [28]

I believe the answer is: Brian Epstein

Brian Epstein was the first one who discovered the Beatles during their lunchtime performance at The Cavern Club. At that time, almost all label company in England refused to sign the Beatles. So epstein insisted on the professional look in order to make them look more presentable for the management and upper class audience.

6 0

3 years ago

Read 2 more answers

What are some things about Elisha Gray

olga55 [171]

Elisha Gray was an electrical engineer. He is known for his telephone prototype and music synthesizer. Gray got over 70 patents for his inventions.

He was born on August 2nd, 1835 in Barnesville, Ohio. He died on January 21st, 1901 in Newtonville, Massechusetts.

Gray also invented the telautograph, this was a device that could transmit handwriting through the telegraph systems!

4 0

3 years ago

Ulm, germany, is home to a history museum about what sandwich shop staple?.

Nastasia [14]

Answer: Bread
The museum is called The Museum of Bread Culture

4 0

2 years ago