A local police chief claims that 76%76% of all drug-related arrests are never prosecuted. A sample of 700700 arrests shows that 72%72% of the arrests were not prosecuted. Using this information, one officer wants to test the claim that the number of arrests that are never prosecuted is different from what the chief stated. Is there enough evidence at the 0.010.01 level to support the officer's claim?
Step 1 of 7 : State the null and alternative hypotheses.
Step 2 of 7 : Find the value of the test statistic. Round your answer to two decimal places.
Step 3 of 7 : Specify if the test is one-tailed or two-tailed.
Step 4 of 7 : Determine the P-value of the test statistic. Round your answer to four decimal places.
Step 5 of 7 : Identify the value of the level of significance.
Step 6 of 7 : Make the decision to reject or fail to reject the null hypothesis.
Step 7 of 7 State the conclusion of the hypothesis test.
In: Statistics and Probability
1) Describe self-managed work teams and comment on what research tells us about their effectiveness. Where would this system work best?
2) Using examples, define and describe roles, role expectations and role conflict.
3) List and describe the five stages of group development and provide examples.
4) Identify the seven components of the communication process model, and briefly describe each by providing an example.
5) Using the concept of channel richness, give examples of messages best conveyed by email, by face-to-face communication, and on the company bulletin board.
6) Describe, using examples, four barriers to effective communication.
7) Power tactics are one way in which managerial employees influence others. Identify and describe seven tactical strategies a manager could use and the conditions under which one tactic is selected over another.
8) Describe the four characteristics of empowered employees, and give an illustration for each that shows how an employee would feel or behave if their work role has this characteristic.
9) Using examples, identify and describe the five conflict management strategies and the accompanying behaviours.
10) Using the five conflict-handling strategies and examples from a typical workplace, describe a situation when each strategy would be a good choice for managing a conflict. You can place yourself in the role of a manager or in the role of an employee in the situations.
In: Psychology
Suppose Liam's Kitchen, a restaurant,: serves two items: hamburgers and french fries. With all employees working diligently, the restaurant can produce these combinations each hour.
Type of Product: Production Alternatives
A B C D E
Burgers 0 10 20 30 60
Fry Bags 100 90 70 40 0
Calculate the opportunity costs of moving from one point to each of the others: Provide the answers after showing all work, and explain if theses costs are constant. What would it mean if the kitchen was actually making 35 Burgers and 45 Fries from Fry Bags? What would it mean if the kitchen was actually making 15 Burgers and 70 Fries from fry bags?
(Rubric: 12.5 points - 1) calculate the opportunity costs and show the work.; 2) Explain the 35-45 question; 3) Answer whether the opportunity costs are fixed or not; and 4) Explain the 15-75 question. 10 points - one of the two explanations is only a "word" not a sentence, and/or one of the points isn't identified. May not be some calculations. 8 points - Neither explanation is a complete sentence, and some of the points aren't identified. May not be many calculations. 6.25 points or less points - This is a failing score for the question. The answer is worse than that required for 8 points.)
In: Economics
The following income statement items appeared on the adjusted
trial balance of Foxworthy Corporation for the year ended December
31, 2018 ($ in 000s): sales revenue, $21,600; cost of goods sold,
$14,150; selling expenses, $2,230; general and administrative
expenses, $1,130; dividend revenue from investments, $130; interest
expense, $230. Income taxes have not yet been accrued. The
company’s income tax rate is 40% on all items of income or loss.
These revenue and expense items appear in the company’s income
statement every year. The company’s controller, however, has asked
for your help in determining the appropriate treatment of the
following nonrecurring transactions that also occurred during 2018
($ in 000s). All transactions are material in amount.
Required:
Prepare Foxworthy’s single, continuous statement of
comprehensive income for 2018, including earnings per share
disclosures. Use a multiple-step income statement format. Two
million shares of common stock were outstanding throughout the
year. (Enter your answers in thousands of dollars, except
earnings per share. Amounts to be deducted should be indicated with
a minus sign. Round EPS answers to 2 decimal
places.)
In: Accounting
Using the below question and values how do you calculate the
standard deviation without using a calculator (by hand) of
(s1^2/n1+s2^2/n2) with the standard deviation answer being 1.4938
and 1.1361
/sqrt(1.4938^2/10 + 1.1361^2/10)
Choose two competing store and compare the prices of 10 items at
both stores. Preform a two-sample hypothesis test to try an prove
if one store is more expensive than the other based on your sample.
Store A item #1-$5.49, #2 $3.77, #3 $0.87, #4 $3.29, #5 $4.79, #6
$1.99, #7 $1.33, #8 $2.19, #9 $2.79, #10 $3.99 Store B items #1
$4.59, #2 3.99, #3 $1.79, #4 $2.99, #5 $4.59, # $1.79,
#7 $1.99, #8 $2.19, #9 $2.79, #10 $3.99
Hypothesis:
H0 ; mu1= mu2
HA: mu 1 > mu2
test statistics:
t = (x1-x2)/sqrt(s1^2/n1+s2^2/n2)
= (3.05 - 3.07)/sqrt(1.4938^2/10 + 1.1361^2/10)
= -0.0337
p value = .4872
FAil to reject the H0
In: Statistics and Probability
A psychologist wants to determine whether speaking more than one language fluently has cognitive benefits. They conduct a study in which a total of 72 participants are tested on a task measuring cognitive control. Half the participants are male, and half are female and speak one, two, or three+ languages fluently. For a two-way ANOVA with SSbetween = 148; SSLanguage = 80; SSSex = 50; SStotal = 350, what can the psychologist conclude? Be sure to address all hypotheses. Assume the DV is continuous.
In: Statistics and Probability
It has been suggested that the highest priority of retirees is travel. Thus, a study was conducted to investigate the differences in the length of stay of a trip for pre- and post-retirees. A sample of 696 travelers were asked how long they stayed on a typical trip. The observed results of the study are found below.
| # of nights | pre-retirement | post-retirement | total |
| 4-7 | 239 | 169 | 408 |
| 8-13 | 78 | 68 | 146 |
| 14-21 | 34 | 58 | 92 |
| 22 or more | 13 | 37 | 50 |
| Total | 364 | 332 | 696 |
With this information, construct a table of estimated expected values.
| # of nights | pre-retirement | post-retirement |
| 4-7 | ||
| 8-13 | ||
| 14-21 | ||
| 22 or more |
Now, with that information, determine whether the length of stay is independent of retirement using alpha = 0.01
a) chi squared =
b) Find the degrees of freedom:
c) Find the critical value:
d) The final conclusion is
A. There is not sufficient evidence to reject the null hypothesis that the length of stay is independent of retirement.
B. We can reject the null hypothesis that the length of stay is independent of retirement and accept the alternative hypothesis that the two are dependent.
In: Statistics and Probability
When events occur in a time period (0, a) with regard to a Poisson process, it is well known that, conditioned on the total number of events k, the joint distribution of the times at with the events occur follows a uniform distribution in (0, a) k. That is, if Xi represents the arrival time of one of them, then Xi ∼ U(0, a) and it is independent of the other X’s.
1. If ten patients visit the Emergency Room (ER) of a hospital between 9 and 10, what is the probability that fifth of them reaches the ER before 9:30?
2. If ten patients visit the ER between 9 and 10, what is the probability that the first 3 of them arrive before 9:20, 4 of them between 9:20 and 9:40, and the last 3 of them after 9:40?
3. If two patients visit the ER of a hospital between 9 and 10, what is the conditional distribution of the time at which the second patient arrived at the ER given that the first patient arrived at time t1?
In: Statistics and Probability
In: Computer Science
Think about the sources of conflict that were identified through our class content on conflict. Choose two of those sources, and match each with what you believe is an appropriate conflict management style to utilize when resolving a conflict within that source. Defend and justify your discussion using examples.
In: Operations Management