1. The amounts of money requested in home loan
applications at Down River Federal Savings, are approximately
normally distributed with a mean of $ 700,000 and a standard
deviation of $ 200,000. A loan application is received this
morning. What is the probability that:
a. The amount requested is $ 800,000 or more?
b. The amount requested is between $ 650,000 and $ 800,000?
c. The amount requested is $ 650,000 or more?
d. Twenty percent of the loans are larger than what amount?
2. Suppose there was a recent article in Newswatch
Magazine which stated that the mean amount of leisure time per week
for men is 50 hours. You believe this figure is too large and
decide to conduct your own test. In a random sample of 58 men, you
find out that
the mean is 48.2 hours of leisure per week and that the standard
deviation of the sample is 10 hours. At 0.05 level of significance,
can you conclude that the information in the article is
untrue?
In: Statistics and Probability
In an effort to cut costs and improve profits, any US companies
have been turning to outsourcing. In fact, according to
"Purchasing" magazine, 54% of companies surveyed outsourced some
part of their manufacturing process in the past two to three years.
Suppose 555 of these companies are contacted.
a) What is the probability that 338 or more companies outsourced
some part of their manufacturing process in the past two or three
years? Write your answer as a percentage rounded to two decimal
places.
b) What is the probability that 285 or more companies outsourced
some part of their manufacturing process in the past two or three
years? Write your answer as a percentage rounded to two decimal
places.
c) What is the probability that 48% or less of these companies
outsourced some part of their manufacturing process in the past two
or three years? Write your answer as a percentage rounded to two
decimal places.
In: Statistics and Probability
A subtle form of racial discrimination in housing is "racial
steering." Racial steering occurs when real estate agents show
prospective buyers homes only in neighborhoods already dominated by
that family's race. This violates the Fair Housing Act of 1968.
According to an article in Chance magazine (Vol. 14, no. 2 [2001]),
tenants at a large apartment complex recently filed a lawsuit
alleging racial steering. The complex is divided into two parts,
Section A and Section B. The plaintiffs claimed that white
potential renters were steered to Section A, while African
Americans were steered to Section B. The table below shows the data
that was presented in court to show the locations of recently
rented apartments.
New Renters
White Black
Section A 87 8
Section B 83 34
Is there evidence of racial steering?
Compute a p-value and confidence interval.
In: Statistics and Probability
Write an essay on:
"Assessing jobs at risk and impact of pandemic (covid 19) on the employment situation in U.S"
To get full credit substantiate your essay with current figures and numbers, data and charts and use specific examples of industries and business impacted by the Covid. This is a researched based project and you should research internet, journals, or magazine to assess how the current employment situation is impacted or going to be impacted by the ongoing pandemic.
The length of the essay should be at least two pages but not more than 5 pages. The essay should be in the following format:
A beginning ( introducing statement) , followed by the main content ( body of the essay) and ended by proper conclusion. The body of the essay should include some chart or current data and numbers or projections on unemployment situation in U.S.
Remember to cite references if you take any data from internet or printed journals.
In: Economics
Please Double Check answers I've recived 3 wrong answers on three diffrent questions today thank you
A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 17 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 17 weeks and that the population standard deviation is 2 weeks. Suppose you would like to select a random sample of 98 unemployed individuals for a follow-up study.
Find the probability that a single randomly selected value is greater than 16.8. P(X > 16.8) = (Enter your answers as numbers accurate to 4 decimal places.)
Find the probability that a sample of size n = 98 is randomly selected with a mean greater than 16.8. P(M > 16.8) = (Enter your answers as numbers accurate to 4 decimal places.)
In: Statistics and Probability
Find the mean and standard deviation for the following, where possible,if not.explain why it is not.
a. x P(x) b. x P(x) c. x P(x)
0 0.1 -9 0.15 0 0.34
1 0.2 10 0.45 1 0.23
2 0.3 11 0.38 2 0.17
3 0.4 12 -0.21 3 0.26
-4 0.3
d. In a poll of 12 to 18yr. old females, conducted by theNokTerNoh!Magazine editor,Carolyn(Zleep D’Pri’D), found that 27%of them said that they expected to see a female soccer player on a team in the Men’s World Cup within 10 years. A random sample of 12 females from this age group was selected, by use of the formula;findi.P(Exactly 8 females share this view) (4pts)ii.P(Between 5-7 share this view) (6pts)
In: Statistics and Probability
there is an old wives tale that women who eat chocolate during pregnancy are more likely to have happy babies. a pregnancy magazine wants to test this claim, and it gathers 100 randomly selected pregnant women for its study. half of the women sampled agreed to eat chocolate at least once a day, while the other half agree to forego chocolate for the duration of their pregnancies. a year later, the ladies complete a survery regarding the overall happiness of their babies. the results are given in the following table. at the 0.01 level of significance, test the old wives' tale.
| happy babies | unhappy babies | |
| with chocolate | 24 | 26 |
| without chocolate | 22 | 28 |
state the null and alternative hypothesis
determine which distrubition to use for the test statistic, and state level of significance
gather date and calculate the necessary sample statistics
and draw a conclusion and interpret the decision
In: Statistics and Probability
In this assignment you will apply your economics knowledge to explain and interpret a recently published economics article. You will research and select one article published within the past year that discusses an economics issue from the list provided below and explain the economics of the article. The article may be obtained from a major business or economics journal, magazine or newspaper (The Economist, Wall Street Journal, Businessweek, Times, Fortune, etc.). Using your own words as much as possible, you will explain the main points being made by the article’s author(s), the economic principles used by the author to support his/her argument, and the implications of the story. To do this, you will be applying some of the key economics concepts you have learned in Chapters 1 - 11 of your textbook, to explain the meaning and relevance of the economics story to individuals, firms and/or industry.
In: Economics
Select an instrument that falls in the scope of personality testing (See the link to the Wikipedia page that lists psychological tests)
For the record, I include clinical and counseling personality tests as well as interest and career assessment in this realm. Pure cognitive assessments (IQ testing and aptitude) are NOT included. Please do not select non-professionally developed tests (i.e. those featured in popular magazine or websites.)
Describe the history of the test’s development. Research the instrument’s validity and reliability (a good explanation of these concepts is featured at this website:
http://www.socialresearchmethods.net/kb/relandval.php (Links to an external site.)Links to an external site.
there are others out there too…) according to the individual(s) or institution that created it. Finally, look for independent (i.e. not affiliated financially or otherwise with the test developers) analysis/evaluation of the test’s strengths and weaknesses.
Provide your own concluding thoughts about the instrument.
In: Psychology
The article reviews in this course provide you an opportunity to critically assess books and articles and, in doing so, learn to compose a stronger and better researched paper or article that commands a greater influence with the chosen audience. Each article review should be 1-2 pages. Your review is graded on completeness of the exercise. Professionalism, grammar, and spelling will also be considered as criteria for grading.
In your article review:
In: Operations Management