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quester [9]
2 years ago
11

The average life expectancy of tires produced by the Whitney Tire company has been 40,000 miles. Management believes that due to

a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, the correct set of hypotheses is
a. H_0: mu < 40,000 H_a: mu greaterthanorequalto 40,000
b. H_0: mu lessthanorequalto 40,000 H_a: mu > 40,000
c. H_0: mu > 40,000 H_a: mu lessthanorequalto 40,000
d. H_0: mu greaterthanorequalto 40,000 H_a: mu < 40,000
Social Studies
1 answer:
Aneli [31]2 years ago
3 0

Answer:

b. Null hypothesis :\mu \leq 40000

Alternative hypothesis: \mu >40000

Explanation:

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

On this case the Management try to proof that due to a new production process, the life expectancy of its tires has increased. So this needs to be on the alternative hypothesis. And the complement of the alternative hypothesis would be on the null hypothesis.

Null hypothesis :\mu \leq 40000

Alternative hypothesis: \mu >40000

Other important thing is that on the alternative hypothesis we never can have the symbol equal.

Based on this the best option on this case is b.

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algol [13]

Answer: Knowledge workers

Explanation:

Knowledge workers is the person who has the ability to plan, search, analyse, observe, organize, program,market and perform various other tasks of the organization in different place and time.They display job mobility feature and other working talent which makes them different from regular workers.      

According to the question, mangers of Phoenix corporation are considered as knowledge workers as they persist extraordinary skills and talent in computer engineering field compared to other manager or workers.Thus, they are approached by other firms .

5 0
2 years ago
Consider if you were asked to read a hypothetical scientific study that purported to identify the cause of autism. What are some
Arte-miy333 [17]

Answer:

1. What does the study say about places that had enough population to be considered metropolis?

2. Was the view expicit enough to make a determination on the general population?

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2 years ago
Which statements describe guidelines for the use of graphics in presentations? Their use will make a bad presentation good.There
LuckyWell [14K]
I will discuss each of them in turn:

Their use will make a bad presentation good.
-no, this is false: just inserting graphics will not save a bad presentation.

There should be at least one graphic element on each slide.
-this is also false: the decision whether there should be a graphic depends on the content of the presentation!!!

They should be appropriate and relevant to the presentation's content.
-yes, this is true and probably the most important rule!

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6 0
2 years ago
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erik [133]

Answer:

a. File a proof of reasonable cause with the EEOC

Explanation:

                 EEOC stands for Equal Employment Opportunity Commission. It is federal agency who looks after the rights of the people who are discriminated for various reasons at the workplace.

                 Nikki was refused to be hired by Fulton Foods, a frozen food retailer chain. Nikki believes that the reason that she was not offered a job at Fulton Foods was that she was discriminated.

                Now Nikki can file a complaint against this act to the Equal Employment Opportunity Commission or EEOC with a solid proof for her complaint.

Thus the answer is

a. File a proof of reasonable cause with the EEOC

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B) Liberal
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