Companies often invest in training their employees to raise their productivity. Economists sometimes wonder why companies spend money on training employees when this incentivizes other companies to poach their employees with higher salaries since the employees gain human capital from training.

Imagine it costs a company 25,000 dollars to teach their employees Python, but it also raises their output by 2,500 dollars per month. The company discounts the future at rate of ?=0.01r=0.01 per month.

a. For how many full months does an employee need to stay at a company for that company to make a profit for paying for their employees’ Python training?

b. Imagine that 3/4 of the employees stay for 8 months and 1/4 of the employees stay for 24 months. Is it worth it for the company to invest in employee Python training?

Begin by re-writing the problem. Minitab is required; attach or include your output. Type (use Word) your assignment; you may handwrite equations.

1. Semester GPAs are compared for seven randomly chosen students in each class level at Oxnard University. Do the data show a significant difference in mean GPAs?

1. At the 0.05 level of significance, determine if there is a difference in the mean GPAs by the four business majors. State your hypotheses.
2. Give and interpret the p-value.

74

Productive efficiency means that the firm is producing at the lowest cost possible.

True or False

75

Which formula below best describes human behavior?

Multiple Choice

• MC = MR

• E > 1

• E = 1

• MB = MC

76

Costco, Wal-Mart, and Target probably control over 70 percent of the market share in the large superstore discount retailing industry. The ‘kinked’ demand curve is used to explain this industry is all part of the Monopolistic Competition market structure.

True or False

77

Suppose that Lockheed Martin (the military defense contractor) invented a very sophisticated fighter jet. If they could only sell this advanced plane exclusively to the U.S. government, then the U.S. government would be classified as a monopsony buyer.       

True or False

Question 1

Historically, the highest priority in environmental health was controlling:

Question 2

Which of the following is not as a consequence of global warming?

Question 3

Environmental public health issues are often related to human use of naturally occurring resources—renewable and nonrenewable.

Question 4

Fluoridation has not been among the most highly touted public health interventions.

Question 5

Courts have upheld the authority of governments to fluoridate water systems when challenged by community members who oppose fluoridation.

Insufficient capital formation can limit the economic growth of developing nations by

A. denying their governments necessary tax revenues.

B. giving workers an excuse to be inefficient.

C. encouraging exploitation by foreign interests.

D. constraining the productivity of labor and holding back national output.

Economic growth in developing nations may be hindered by human resources that are

A. unhealthy or exposed to disease.

B. poorly educated and trained.

C. unable to form trade unions.

D. all of the above.

E. A and B only.

A lack of social overhead capital can limit the economic growth of developing nations by

A. impeding the productive use of other resources.

B. giving governments an excuse to impose high taxes.

C. discouraging entrepreneurs from undertaking projects.

D. all of the above.

E. A and C only.

Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos." Of those polled, 485 were in favor, 402 were opposed, and 125 were unsure. A politician claims that people don't really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin toss. Exclude the 125 subjects who said that they were unsure, and use a 0.01 significance level to test the claim that the proportion of subjects who respond in favor is equal to 0.5. What does the result suggest about the politician's claim?

The test statistic for this hypothesis test is_________

The? P-value for this hypothesis test is_________

Some Natural toxins are produced by plants as a natural defense mechanism against predators, insects or microorganisms, or as a consequence of infestation with microorganisms, such as mold, in response to climate stress (such as drought or extreme humidity). Listed in Table 1 on the following page are the naturally formed substances which can produce toxin during growth, storage or processing. Choose two (2) and identify the following:
● Plant identification (common name, scientific name and family name).

● Found in which food/source.

● Uses of the substance.

● Side effects to the human body.

[30 marks]

Design an experiment to determine the strength of the magnetic field of Earth using the available equipment.

Available equipment: A large coil of wire (with stand in the center), compass, ammeter, 10Ω and 50Ω resistors, power supply, ruler.

A) Perform the experiment and record your measurement and calculations in an appropriate format. Be explicit about what model you're using to calculate the magnetic field. Vector diagrams may assists you. Include important measurements. Determine the magnitude of the Earth's magnetic field.

B) Identify at least 3 sources of error in your experiment and evaluate how they affect your data. Identify at least 1 shortcoming in your experimental design and what you would do to fit it, Summarize these. Hints: Just saying human error is not acceptable.

Please explain in full detail

1. In a metapopulation, source populations are likely to have more individuals dispersing to other habitat patches. This means that the source population:

2. Studies show that lean individuals and obese individuals differ in the bacterial species composition in their guts. It was hypothesized that biotic and abiotic factors may interact in the human gut. Specifically, particular gut flora may alter fat metabolism and therefore body composition and weight. Which observation would best support this hypothesis?

3. The posterior end of the hawk moth caterpillar has evolved to look like the head of a venomous snake. This represents an example of what type of mimicry?

4. What is the correct description of the transformations of nitrogen in a wetland ecosystem?

5. Consider a carbon atom as it moves through the carbon cycle. What would be a correct description of its transformations?