Reference no: EM131153396
1. A study conducted at ANU finds that a typical office worker spends an average of 13 minutes per hour on non work related activities such as face book. On a trial basis, management sets up a new enclosed work station for a randomly selected group of 12 workers and finds that the average number of minutes lost per hour is 11.3 with a standard deviation of 3.7. At the 5% level of significance, can we conclude that the work station represents a significant change?
2. Five hundred graduates were cross classified by socio-economic group and the presence or absence of a certain skill gap. The results were as shown below.
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Socio- economic group
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Skill Gap
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Upper
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Upper middle
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Lower middle
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Lower
|
|
Present
|
8
|
24
|
32
|
27
|
|
Absent
|
42
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121
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138
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108
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Are the data compatible with the hypothesis that skill gap is unrelated to socio-economic status of the graduates at α = 0.10?
3. The following are the sales revenues (in millions of shillings) generated by four salesmen situated in four different regions of a country.
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Region A
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Region B
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Region C
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Region D
|
|
13
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12
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18
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8
|
|
9
|
11
|
12
|
10
|
|
12
|
9
|
16
|
12
|
|
16
|
14
|
6
|
8
|
|
15
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4
|
8
|
7
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Perform a one way analysis of variance at α = 0.05 to confirm whether salesman location influences the amount of revenues generated.
4. The responses from a group of religious leaders on an item of Likert's attitude scale were recorded as follows:
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Strongly disagree
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disagree
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Undecided
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agree
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Strongly agree
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Total
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Christian
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12
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18
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4
|
8
|
12
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54
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|
Muslim
|
48
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22
|
10
|
8
|
10
|
98
|
|
Hindu
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10
|
4
|
12
|
10
|
12
|
48
|
|
Total
|
70
|
44
|
26
|
26
|
34
|
200
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At 1% level of significance, do the data indicate that the opinions expressed are independent of the religion professed by the respondents?
5. The following data were collected from two separate groups of 144 men and 175 women on an attitude scale.
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Mean
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SD
|
|
MEN
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19.7
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6.08
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|
WOMEN
|
21.0
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4.89
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a. Test the significance of the difference between the mean of the two groups at the 0.05 level of significance.
b. In your own words, what does the result of the experiment say?
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Ethical issues research paper and present it to the class
: Include a minimum of eight references from texts, articles, journals, local police or criminal justice policy, and websites, of which at most two may be websites. The required texts for class may be used but not counted as one of the eight referen..
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Confidence interval estimate for the true mean
: A tyre manufacturer found that the sample mean tread life of 49 radial tyres tested was 52345 km with standard deviation 12943 km. Construct a 99% confidence interval estimate for the true mean tread life of all radial tyres manufactured and give ..
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Domain of discourse
: Let F(x,y) be the statement x can fool y, where the domain of discourse for both x and y is all people. (a) Use quanti?ers to express each of the following propositions in symbols.
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Use the rule of simpli?cation at some point
: You will probably want to use the rule of Simpli?cation at some point in your proof. You need to be careful with that rule! In plain English, the rule says that if you know p and q is true
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Socio-economic group and the presence or absence
: Five hundred graduates were cross classified by socio-economic group and the presence or absence of a certain skill gap. The results were as shown below.
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Find cost of good sold assuming periodic inventory procedure
: Compute cost of goods sold assuming periodic inventory procedures and inventory priced at FIFO. In an inflationary period, which inventory method-FIFO, LIFO, average cost-will show the highest net income?
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Is the author authoritative and convincing
: Compare the article you are reviewing with the general treatment of the same topic in the text we are using or from the presentations. Does the author agree or disagree with how the topic is presented in the text?
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Selfish interests is actually benefit to country as a whole
: Do you people pursuing their selfish interests is actually a benefit to the country as a whole? - Does the principle of the profits of stock hold true in today's economy?
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Briefly explain the genesis account of creation
: Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion - Express how your understanding of the origin of the universe impacts your worldview, specifically your view of God, of hu..
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