(1 point) The count in a bacteria culture was 600 after 10 minutes and 11613 after 20 minutes. Assume the growth can be modelled exponentially by a function of the form Q(t)=AertQ(t)=Aert, where tt is in minutes.

(a) Find the relative growth rate, with at least the first 5 digits after the decimal point entered correctly:
r=r=

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(b) What was the initial size of the culture? Round your answer to the closest integer.

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(c) Find the doubling period (in minutes).

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(d) Find the population after 65 minutes. Use your answer to part (b) as the initial amount.

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(e) When will the population reach 13000? After

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point) The count in a bacteria culture was 500 after 10 minutes and 32518 after 30 minutes. Assume the growth can be modelled exponentially by a function of the form Q(t)=A e rt Q(t)=Aert , where t t is in minutes. (a) Find the relative growth rate, with at least the first 5 digits after the decimal point entered correctly: r= r= equation editor Equation Editor (b) What was the initial size of the culture? Round your answer to the closest integer. equation editor Equation Editor (c) Find the doubling period (in minutes). equation editor Equation Editor (d) Find the population after 110 minutes. Use your answer to part (b) as the initial amount. equation editor Equation Editor (e) When will the population reach 15000? After

The count in a bacteria culture was 800 after 20 minutes and 1100 after 30 minutes. Assuming the count grows exponentially,

What was the initial size of the culture?

Find the doubling period.

Find the population after 70 minutes.

When will the population reach 10000. You may enter the exact value or round to 2 decimal places.

The status of a project after 100 days and after 150 days is as follows. (EV-Earned Value, PV-Planned Value, AC-Actual Cost in Rs). Determine the time and cost overruns and underruns of:

1. The project
2. Of each activity after 100 days and after 150 days.

Show all calculations.

You just got to the register at JCrew after shopping for a new wardrobe. After ringing up all your items the bill is $1,285. The cashier offers you 10% off if you open up a new credit card. The credit card has an APR of 28% (compounding is daily). You planned on making $50 monthly payments on your credit card which has an APR of 14%. How long will it take to pay off the credit card (assuming that is the only charge) if you use your card versus opening a JCrew card. (Ignore the negative impact on your credit score.) Hint: turn the daily rate into an effective monthly rate. Show your work.

You plan to work for Strickland Corporation for 12 years after graduation and after that want to start your own business. You expect to save and deposit $7,500 a year for the first 6 years (t = 1 through t = 6) and $15,000 annually for the following 6 years (t = 7 through t = 12). The first deposit will be made a year from today. In addition, your grandmother just gave you a $50,000 graduation gift that you will deposit immediately (t = 0). If the account earns 9% compounded annually, how much will you have when you start your business 12 years from now?

You plan to work for Strickland Corporation for 12 years after graduation and after that want to start your own business. You expect to save and deposit $7,500 a year for the first 6 years (t = 1 through t = 6) and $15,000 annually for the following 6 years (t = 7 through t = 12). The first deposit will be made a year from today. In addition, your grandmother just gave you a $20,000 graduation gift that you will deposit immediately (t = 0). If the account earns 9% compounded annually, how much will you have when you start your business 12 years from now? Select the correct answer. a. $263,721 b. $263,746 c. $263,758 d. $263,709 e. $263,734

Please show all work or calculator steps! Thank you!

A patient comes into the ER after she was attacked. She is experiencing difficulty breathing after she was stabbed in the thorax. Scans show fluid in the thoracic cavity through a lesion in the lung; in short, a hemopneumothorax. Explain the pressure gradients that would allow air and blood to enter the thoracic cavity in the first place. What will happen to this patient without medical intervention? Explain each step of her imminent demise.

1) After considering the situation of market power for my software and how it changed after the introduction of competitors, consider situations of natural disasters and how governments respond to shortages resulting from them.

Read this article; what is the most likely way that anti-gouging laws potentially can increase social welfare?

Select one:

a. Penalties assessed on price gougers can be redistributed to victims or the area at large that was affected by the natural disaster. In that sense, the government wants more illegal price gouging to occur so it can prosecute and raise more revenue in fines and redistribute to voters.

b. Legislators and regulators benefit by making pronouncements against price gougers, knowing the public holds such a low opinion of them (the gougers, not the politicians :) . The public sees swift action against profiteers, and legislators/regulators enhance their standing in the public eye.

c. They increase the deadweight loss for those companies who practice price gouging. The laws raise these companies' costs so that it is no longer profitable for the companies to set price according to MR=MCMR=MC.

d. They encourage businesses to refrain from price gouging since it will negatively affect their reputations and future profitability.

2. In contrast, read this blog post; according to the post, why might price gouging increase social welfare?

Select one:

a. Price gouging will reveal the motives of greedy sellers, and thus overall supply will be reduced, which benefits consumer welfare.

b. The price can increase so high that the extra profits by "gougers" far exceeds the harm to consumers who are gouged.

c. The high price can increase consumer surplus enough that it is greater than producer surplus; since there are more consumers than producers in society, the benefit to consumers should outweigh the harm to producers.

d. While the reputation effect may be true, the high price will encourage outside suppliers to come to the affected area and will mitigate the shortage.

Article:

Charging flood victims $30 for a case of water or $10 for a gallon of gas doesn’t sit right.

And a majority of states, including Texas, have laws against price gouging. The state attorney general has threatened to prosecute people who jack up their prices in the wake of the flooding caused by Harvey. He said his office has received hundreds of reports of profiteering.

But most economists think those high prices can actually benefit communities during a crisis. Sky-high prices are the market at work, the basic laws of supply and demand in action.

“Price gouging laws stand in the way of the normal workings of competitive markets,” explained Michael Salinger, an economics professor at Boston University and former director of the Bureau of Economics at the Federal Trade Commission.

To make his point, Salinger recounted a "Dennis the Menace" cartoon he remembers from his childhood.

Dennis asked his father what causes tides. “The moon”, his father answered. Dennis offered up another explanation, that the tides were caused a big whale in the ocean. When the whale swishes his tail one way, the tide goes in, and when he swishes his tail the other way, the tide goes out.

“You don’t really believe that?” asked the father. “No,” said Dennis, “but it makes a lot more sense than the moon.”

Salinger said letting the markets work, allowing price hikes during disasters is the moon answer. It isn’t intuitive, he said, but it’s right.

There are a couple of reasons economists don’t like laws against price gouging.

On the demand side, laws that keep prices artificially low can encourage overbuying. They benefit the people who get to the store first.

“If prices don’t rise,” explained Texas Tech economics professor Michael Giberson, “they just get plenty.”

If water is cheap, I might be tempted to buy as much as I can jam in my car — just in case. If, on the other hand, prices shoot up, Giberson said, “it encourages consumers to be a little more careful in using the goods.”

There’s also a supply-side argument that economists make.

“When the price of vital goods go up in an area affected by an emergency, that sends a signal by areas not affected by the emergency to bring more,” explained Matt Zwolinski, director of the University of San Diego’s Center for Ethics, Economics, and Public Policy.

Zwolinski argues that the practice of price gouging can actually be admirable from a purely moral perspective: “It allocates goods and services in a way that best meets human needs.”

But, as with so much of economics, there is disagreement.

What are economists missing when they make these arguments?

“They are misunderstanding that if you make people mad, you pay a price,” said Richard Thaler, an economist at the Booth School of Business at the University of Chicago. Thaler co-wrote a well-known paper on price gouging that looked at what people think is fair.

It begins with the following scenario: A hardware store has been selling snow shovels for $15, and the morning after a blizzard, it raises the price to $20.

Thaler and his colleagues asked people if they thought that was fair.

“And people hate it,” he said. “They all think that’s a terrible idea.”

Thaler argued that any business that wants to still be in business tomorrow shouldn’t raise prices, because when it's time to rebuild, no one is going to want to buy new flooring from the guy that sold them the generator for double the normal rate.

Businesses and economists should pay more attention to our shared social values, argued Thaler. “During a time of crisis, it’s a time for all of us to pitch in, it’s not a time for us to grab.”

We have to think beyond the laws of supply and demand, he said, beyond pure economics.

Group #1: Smashed into mean and SD: Mean = 41.55, Variance = 44.15, SD = 6.64

Group #2: Hit mean and SD:   M = 27.6, Variance = 53.94, SD = 7.34

1). Compute the effect size (Cohen’s d using the pooled variance). Which of the following is the effect size? Round 2 decimal points.

A. Cohen’s d =2.13

B. Cohen’s d =1.12

C. Cohen’s d =1.99

D.Cohen’s d =2.10

2). What does the pooled Cohen’s d you obtained using the coin study data represent?

A. A small/weak effect

B. No effect

C. A large effect

D. A medium/moderate effect

3). What is the effect size and why do we report it?

EXPLAIN

4). When is it appropriate to use a dependent samples t-Test?

A. Participants are of different gender

B. Participants are randomly assigned to a group

C. Participants are recruited after completing a screening questionnaire

D. Participants provide more than one score or they are matched

5). Results Section write up: Cognitive ability of participants before and after participants consumed alcohol was recorded. Results showed a significant difference in cognitive ability before and after alcohol consumption, t(28) = 4.89, p < .01. Participants had higher scores on the cognitive task before they consumed alcohol (M = 4.55, SD = 1.11) than after (M = 2.22, SD = .09).

Using the write up of the results section from an APA empirical research article, identify which test was conducted?

A. z-test

B. Pearson correlation

C. Independent sample t-test

D. Dependent sample t-test

6). Results Section write up: Differences between treatment and control groups were tested. Results showed a significant difference between groups, t(38) = 3.45, p < .01. Participants in the treatment condition, who received study materials, had significantly higher GRE scores (M = 4.55, SD = 1.11) than participants in the control condition, who did not receive study materials (M = 2.22, SD = .09).

Using the write up of the results section from an APA empirical research article, identify which test was conducted?

A. Pearson correlation

B. z-test

C. Dependent sample t-test

D. Independent sample t-test