Annual sales, in millions of dollars, for 21 pharmaceutical companies follow. 8,072 1,319 1,798 8,524 2,361 10,956 585 14,138 6,194 1,776 2,705 1,302 10,078 7,179 3,859 4,167 709 2,042 3,507 5,562 7,974 Provide a five-number summary. Smallest value First quartile Median Third quartile Largest value Compute the lower and upper limits. Lower limit Upper limit Do the data contain any outliers? Johnson & Johnson's sales are the largest on the list at $14,138 million. Suppose a data entry error (a transposition) had been made and the sales had been entered as $41,138 million. Would the method of detecting outliers in part (c) identify this problem and allow for correction of the data entry error? Which of the following box plots accurately displays the data set?
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Hello is life expectancy ratio or interval level of measurement
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In: Statistics and Probability
The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 3915 grams and a variance of 429,025. If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be less than 4570 grams. Round your answer to four decimal places.
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Question: Using the Case analysis below. analyze the case “Why Uber Can't Make Money” about 2400 words in l...
Using the Case analysis below. analyze the case “Why Uber Can't Make Money”
about 2400 words in length
Last month, Uber reported a third-quarter loss of nearly $1.5 billion, bringing its 2017 year-to-date red ink to $3.2 billion. Losses of this magnitude are clearly not sustainable, and call for an explanation of why Uber has been unable to rein in ballooning costs and what it will need to do to survive, let alone prosper.
CASE ANALYSIS OUTLINE
Situational Analysis
External Environmental Analysis (Outside of the organization)
Economic, Social, Political, Technological, Natural
Internal Environmental Analysis (Specific to the organization)
Market Analysis- Description of the market, Primary customers
Evaluation of Marketing Strategies
Product, Price, Distribution, Promotion
Evaluation of the other Functional Areas-
Finance, Production, Human Resources, Technology
Strengths, Weaknesses, Opportunities, and Threats (SWOT) Analysis
State the Main Problems facing the business/organization
Development of Strategic Alternatives (2)
Evaluation of Strategic Alternatives (2)
Recommendation of the better Alternative
Implementation Techniques for Recommended Alternative (How, when,
where, why).
Control Procedures to keep Recommended Alternative on course.
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Sarah scores an 85 on an (IQ) test with a mean of 94 and a standard deviation of 10. At what percentile rank is she with respect to the rest of the population?
Please show work- thank you.
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You receive a year-end statement from your broker that details your stock ownership over the years, and the total gain or loss over the holding period for each. You want to devise a method to make a meaningful comparison of the returns in order to determine which stock performed the best and which performed the worst. The problem is, the holding periods all have different starting and ending dates and are different lengths.
Stock returns
Stock Buy date Buy price (P0)
Sell date Sell price (P1) Total
return
((P1-P0)/P0)
A 1/1/2002 16.00
1/1/2016 25.00 56.3%
B 1/1/2014 87.00
1/1/2015 80.00 -8.0%
C 1/1/2008 26.00
1/1/2014 28.00 7.7%
D 1/1/2001 17.50
1/1/2008 23.50 34.3%
E 1/1/2004 76.00
1/1/2007 68.00 -10.5%
F 1/1/2006 12.00
1/1/2016 13.00 8.3%
What is the best way to compare the returns of these stocks?
Use the return over the entire holding period for each
stock to compare
Using the total return over the holding period for
each stock, take the geometric mean to get the one year average
return, and compare
Find the dollar change of each stock (Sell price minus
Buy price) and compare
Using the total return over the holding period for
each stock, take the straight average to get the one year average
return, and compare
In: Statistics and Probability
13. Calculate the expected loss EL if k = $22,000, sigma = 0.7 and D = 0.5.
14. A total of 10 units were tested over a 500-hour period. A total of 4 units failed after 10, 20, 70, and 400 hours. The other 6 did not fail during the 500-hour test. Calculate the failure rate.
15. The mean life of a diesel is 250,000 miles, with a standard deviation of 2,500 miles. What is the probability that it will wear out before 248,000 miles.
16. A component has a reliability of 0.99 for 600 hours of normal use. Determine the failure rate.
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Using the standard Normal distribution tables, what is the area under the standard Normal curve corresponding to Z < 1.1?
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Give a plausible example of a three-variable research problem in which partial correlation would be a useful analysis. Define X1, X2, and Y. Make sure that you indicate which of your three variables is the "controlled for" variable ( X2). What results might you expect to obtain for this partial correlation, and how would you interpret your results (e.g., spurious correlation, mediation, moderation, and so on)?
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Please use Excel and show steps!! Greentrop Pharmaceutical Products are the world leader in the area of sleep aids. Its major product is “Dozealot”. The Research-and-Development Division has defined two alternatives to improve the quality of the product. These alternatives are simple reformulations of the product to minimize the side effects and to improve the product efficacy. To conduct an analysis, management has decided to consider the possible demands for the drug under each alternative. The following payoff table shows the projected profit in millions of dollars.If the decision maker knows nothing about the probabilities of three states of nature, what is the recommended decision using the optimistic, conservative, and minimax regret approaches?
Demand | |||
Decision Alternatives | Low | Medium | High |
d1 | $500 | $350 | $525 |
d2 | $875 | $300 | $765 |
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Suppose x has a distribution with a mean of 70 and a standard deviation of 15. Random samples of size
n = 36
are drawn.
(a) Describe the
x distribution
and compute the mean and standard deviation of the distribution.
x
has ---Select--- a binomial an unknown a geometric an approximately normal a normal a Poisson distribution with
mean μx =
and
standard deviation σx = .
(b) Find the z value corresponding to
x = 75.
z =
(c) Find
P(x < 75).
(Round your answer to four decimal places.)
P(x < 75) =
(d) Would it be unusual for a random sample of size 36 from the
x distribution to have a sample mean less than 75?
Explain.
Yes, it would be unusual because less than 5% of all such samples have means less than 75.No, it would not be unusual because more than 5% of all such samples have means less than 75. No, it would not be unusual because less than 5% of all such samples have means less than 75.Yes, it would be unusual because more than 5% of all such samples have means less than 75.
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Rent'R Cars is a multisite car rental company in the city. It is trying out a new "return the car to the location most convenient for you" policy to improve customer service. But this means that the company has to constantly move cars around the city to maintain required levels of vehicle availability. The supply and demand for economy cars, and the total cost of moving these vehicles between sites, are shown below.
From\To | D | E | F | G | Supply | ||||||
A |
$15 |
$16 |
$14 |
$6 |
70 | ||||||
B |
8 |
7 |
13 |
6 |
35 | ||||||
C |
14 |
9 |
15 |
12 |
100 | ||||||
Demand | 55 | 60 | 50 | 40 | 205\205 | ||||||
a. Find the solution that minimizes moving costs
using Microsoft Excel. (Leave no cells blank - be certain
to enter "0" wherever required.)
|
In: Statistics and Probability
In: Statistics and Probability