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IgorLugansk [536]
3 years ago
13

A dot-com company’s CEO is worried that the employees feel over-worked. She waits till 7 p.m. one night and proceeds to briefly

interview each employee still there to see whether they feel she is overworking them. What problems are there with this approach?
Mathematics
1 answer:
Svetach [21]3 years ago
4 0

Answer:

Time wastage and not formal enough

Step-by-step explanation:

He didn't have to wait till that time to ask the the question, besides keeping them there will cause uneasiness between the workers because it's already late.

Another point is that some people might not decided to give him the reply face to face, as they night sound rude or something more than that.

A more formal approach and less time consuming and less stressful method like may be filling of forms, papers , or complaint letters should be used instead.

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The manager of a local nightclub has recently surveyed a random sample of 280 customers of the club. She would now like to deter
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Answer:

z = \frac{35.6-35}{\frac{5}{\sqrt{280}}}= 2.007

p_v = P(z>2.007) = 0.0224

Since the p value is lower than the significance level given of 0.05 we have enough evidence to reject the null hypothesis on this case. And the best conclusion for this case is:

We (reject) the null hypothesis. That means that we (found) evidence to support the alternative.

Step-by-step explanation:

We have the following info given:

\bar X = 35.6 represent the sampel mean for the age of customers

\sigma = 5 represent the population standard deviation

n = 280 represent the sample size selected

We want to test if the mean age of her customers is over 35 so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 35

Alternative hypothesis \mu >35

The statistic for this case is given by:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing the data given we got:

z = \frac{35.6-35}{\frac{5}{\sqrt{280}}}= 2.007

We can calculate the p value since we are conducting a right tailed test like this:

p_v = P(z>2.007) = 0.0224

Since the p value is lower than the significance level given of 0.05 we have enough evidence to reject the null hypothesis on this case. And the best conclusion for this case is:

We (reject) the null hypothesis. That means that we (found) evidence to support the alternative.

5 0
3 years ago
Write an addition fact that helps you solve 16-9
pochemuha
4+1 = 5 
5 is the answer but you could also just subtract it a normal way

3 0
3 years ago
Read 2 more answers
Nutritional researchers conducted an investigation of two high-fiber diets intended to reduce cholesterol level. a group of peop
castortr0y [4]

Answer:

Failed to Reject Null Hypothesis

Step-by-step explanation:

Null Hypothesis: The means from two respective diets are the same Alternative Hypothesis:  The two means from the two diets differ.

Fall in Cholesterol (mg/dL)

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Rice                    7       14.4       7.8

Vegetable          9       12.19     7.86

4 0
3 years ago
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There are 8 times as many females as males on the maths course at university. What fraction
Serga [27]

Answer:

8/9 of the course are males.

4 0
2 years ago
Mary went to the local market to purchase some fruit. Each box of
musickatia [10]

Answer:

11

Step-by-step explanation:

11 BOXES OF ORANGES IS $33

7 BOXES OF PEARS IS $35

WHICH EQUALS $68

MEANING THERE IS 11 BOXES OF ORANGES

5 0
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