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Tasya [4]
3 years ago
13

a random sample of 65 high school students has a norma distribution. The smple mean average ACT exam score was 21.4 with a 3.2 s

ample standard deviation. Construct a 90% confidence interval estimate of the population mean average ACT exam and write a sentence to explain the confidenve interval.
Business
1 answer:
gulaghasi [49]3 years ago
3 0

Answer:

90% Confidence interval:   (20.7376 ,22.0624)

Explanation:

We are given the following information in the question:

Mean, μ = 21.4

Standard Deviation, σ = 3.2

Sample size, n = 65

We are given that the distribution of ACT exam score is a bell shaped distribution that is a normal distribution.

90% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 64 and}~\alpha_{0.10} = \pm 1.669 

21.4 \pm 1.669(\frac{3.2}{\sqrt{65}} ) = 21.4 \pm 0.6624 = (20.7376 ,22.0624)

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You are to interview an entrepreneur, then summarize the interview questions. This assignment is worth 4 grades.
Trava [24]

Explanation:

An informational interview is a wonderful way to network and a fantastic way to learn more about a career in which you are interested in possibly pursuing. And these types of interviews don't just provide solid information to those interested in corporate careers.

If what you are interested in most is starting your own business rather than working for someone else, an informational interviews is a way to find out what it takes to be a successful entrepreneur and learn more about what running your own business entails. These types of conversations can also help you make a well-informed decision about whether running your own business fits into your vision for your life and career.

4 0
3 years ago
A difference between operations and projects is that operations end when their objectives have been reached, whereas projects do
maxonik [38]

Answer:

FALSE

Explanation:

It is False that the difference between operations and projects is that operations end when their objectives have been reached, whereas projects do not.

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3 0
3 years ago
Which of the following definitions describes the term electroncution
irina1246 [14]
A reflex response to the passage of electric current through the human body and results when electric current enters the body at one point and leaves through another.
7 0
3 years ago
The most recent financial statements for Xporter, Inc., are shown here:
Diano4ka-milaya [45]

Solution :

Expected sales = current sales x (1 + projected sale next year increase)

                         = 5,700 x (1 + 15%)

                         = $ 6555

Expected cost = current cost x (1 + projected sale next year increase)

                       = 4200 x (1 + 15%)

                       = $ 4830

Taxable income = 1500 x ( 1 + 15%)

                           = $ 1725

Taxes (34%)  = 510 x (1+15%)

                     = $ 586.5

Net income = sales - cost - taxes

                   = 6555 - 4830 - 586.5

                   = $ 1138.5

Calculation of total asset :

Current asset = 3,900 x 1.15

                      = $ 4485

Fixed asset   = 8100 x 1.15

                      = $ 9315

Total asset = 4485 + 9315

                  = $ 13800

Calculation of total liabilities

Current liabilities = 2200 x 1.15

                            = $ 2530

Long term debt = $ 3,750

Equity = $ 6050 + (1138.5 x 0.50 )

          = $ 7189

Total liabilities  = $ 2530 + $ 3,750 + $ 7189

                          = $ 13, 469

Therefore the external financial needed is = $ 13800 - $ 13, 469

                                                                       = $ 331

8 0
3 years ago
The atmospheric pressure at a place is 650 mm of Hg. Convert this pressure
EleoNora [17]

Ans Solution

Explanation:

4 0
3 years ago
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