- Credit card companies in the America play a very vital role in everyone’s life? Answer
- Credit card debt has steadily increased for the last three decades
- Steps taken by regulators to avoid traps are
- Lenders have to post their credit card agreements online and let customers pay their bills on the internet or by phone without an added fee
- Credit card debt has steadily increased for the last three decades.
Some young men were told by their mothers not to wear tight briefs Answer
- Some young men were told by their mothers not to wear tight briefs, as this could make them sterile and infertile. Explain how wearing tight briefs could do this. What alternative methods could you implement to avoid sterility and infertility, and why?
- In the news recently, there has been numerous accusations of steroid use. The use of anabolic steroids is illegal, but the practice is widespread in certain professional sports. Why do steroids increase performance? Is this a form of cheating, or is it the same as using special diets and other forms of enhancement?
What is a business model? How does it differ from a business plan Answer
- What is a business model? How does it differ from a business plan?
2. What are the eight key components of an effective business model?
3. What are Amazons primary customer value propositions?
4. Describe the five primary revenue models used by e-commerce firms.
5. Why is targeting a market niche generally smarter for a community provider than targeting a large market segment?
6. Besides music, what other forms of information could be shared through peer-to-peer sites? Are there legitimate commercial uses for P2P commerce?
7. Would you say that Amazon and eBay are direct or indirect competitors?
8. What are some of the specific ways that a company can obtain a competitive advantage?
9. Besides advertising and product sampling, what are some other market strategies a company might pursue?
10. What elements of FreshDirects business model may be faulty? Does the business scale up to a regional or national size?
The mean annual salary of classroom teachers is approximately normal with a mean of $45,915 Answer
The mean annual salary of classroom teachers is approximately normal with a mean of $45,915. Assum,e a standard deviation of $8000. Does the following for the variable “annual salary” of classroom teachers.
a) Determine the sampling distrubution of the sample mean for sample of size 64.
The sample mean is
The sample standard deviation is
b) Detemine the sampling distrubution of the sample mean for samples of size 256.
The sample mean is
The sample standard deviation is
c) What is the probability that the sampling error made in estimating the population mean salary of all classroom teachers by the mean salary of the sample of 64 classroom teachers will be most $1000? (round to 4 decimal places)
d) What is the probability that the sampling error made in estimating the population mean salary of all classroom teachers by the mean salary of a sample of 256 classroom teachers will be at most $1000? ( round to 4 decimal place)
Bricks are delivered to a work site and stacked in rows and columns, forming a rectangular prism Answer
Bricks are delivered to a work site and stacked in rows and columns, forming a rectangular prism. The length of the prism is 1 foot greater than its width, and its height is 2 feet less than its width. Find the dimensions of the prism formed by the bricks, given that its volume is 40 cubic feet.
A soft drink company has recently received customer complaints about its one-liter-sized soft drink products Answer
A soft drink company has recently received customer complaints about its one-liter-sized soft drink products. Customers have been claiming that the one-liter-sized products contain less than one liter of soft drink. The company has decided to investigate the problem. According to the company records, when there is no malfunctioning in the beverage dispensing unit, the bottles contain 1.01 liters of beverage on average, with a standard deviation of .13 liters. A sample of 70 bottles has been taken to be measured from the beverage dispensing lot. The mean amount of beverage in these 70 bottles was 0.993 liters. Find the probability of observing a sample mean of 0.993 liters or less in a sample of 70 bottles, if the beverage dispensing unit functions properly.
What factors in the Industrial Age caused the rate of heart disease to grow, particularly in the mid-20th century Answer
What factors in the Industrial Age caused the rate of heart disease to grow, particularly in the mid-20th century?
Why is it so common today?
To study the effect of alcohol on amylase activity using uv spectrophotometer Answer
Halle Schaf 10/8/13
Title : To study the effect of alcohol on amylase activity using uv spectrophotometer.
Enzyme amylase catalyses the first step in the digestion of starch which is a main source
of carbohydrate in the human diet. The study of enzyme amylase is significant from
research point of view as it breaks down starch to sugars by hydrolysis. The inhibitory
effects of alcohol on enzyme amylase was assessed in this study. The present study
revealed the effects of ethanol on amylase activity both qualitatively and quantitatively.
Enzyme activity was quantified by the amount of the coloured intermediate
produced, the concentration of which was determined by using a
spectrophotometer at 560 nm. Amylase action was measured qualitatively by the
Lugol’s solution which reacts with starch to produce deep blue color, the
concentration of which was determined by measuring the rate of change of
absorbance with time. The results from both group ( control & experimental ) revealed
that the rate of amylase reaction was dependent on the presence of ethanol . An overall
higher absorbance of the control solution was indicated and the R-squared
value of the experimental group was approximately half the R-squared value of the
control which followed a very linear regression trend.
If 200 micro liters of a 2 ml extract prepared from 2 grams of wheat contains 10 Answer
If 200 micro liters of a 2 ml extract prepared from 2 grams of wheat contains 10micrograms of acid phosphatase, how much acid phosphatase is found in 1 gram of wheat?
How does natural selection act upon species/populations Answer
How does natural selection act upon species/populations?
What evidence supports natural selection?
How do new species arise from an existing population?
How might the first life have developed on the early earth?
How does the Hardy-Weinberg equation act as a model for changes in populations?
What are the major steps of animal development? How are these related to the evolution of
animal body plans?
What are several kinds of evidence for the evolution of life on earth for the last 3.5 billion
How should we best visualize the common ancestry of life?
How do organisms receive, adjust, and respond to the environment with each
of the following physiological systems?
How does the form and structure of each of these systems relate to its overall functional
efficiency in energy utilization within an organism?
How does the biological diversity of these systems give evidence of evolutionary adaptation
to a changing environment?
How do feedback systems function within these systems to help organisms maintain
dynamic homeostasis within a changing environment?
How do individuals and populations interact with the physical features and living
communities that surround them?
In what ways does all life function together as a biosphere?
How do individuals, populations, and communities respond to changes in their
environment or composition?
How does the flow of matter and energy through an ecosystem, impact organisms?
How is our quality of life now impacted by interactions in ecosystem?