Questions
The table below shows the number of species and Shannon Diversity Index values for 5 prairie...

The table below shows the number of species and Shannon Diversity Index values for 5 prairie plant communities.

Community Number of Species Shannon Diversity
A

10

3.5
B 25 1.3
C 10 1.3
D 20 2.4
E 4 3.1

Which community has the highest richness?

Which community is the most even?

Which two communities are equal in alpha diversity?

Which communities show the highest beta diversity?

In: Biology

Possible outcomes for three investment alternatives and their probabilities of occurrence are given next.       Alternative 1...

Possible outcomes for three investment alternatives and their probabilities of occurrence are given next.      

Alternative 1 Alternative 2 Alternative 3
Outcomes Probability Outcomes Probability Outcomes Probability
Failure 40 0.20 70 0.20 75 0.40
Acceptable 80 0.20 140 0.20 255 0.40
Successful 135 0.60 205 0.60 405 0.20


Using the coefficient of variation, rank the three alternatives in terms of risk from lowest to highest. (Do not round intermediate calculations. Round your answers to 3 decimal places.)

In: Finance

Possible outcomes for three investment alternatives and their probabilities of occurrence are given next.           Alternative...

Possible outcomes for three investment alternatives and their probabilities of occurrence are given next.       
  

Alternative 1 Alternative 2 Alternative 3
Outcomes Probability Outcomes Probability Outcomes Probability
Failure 60 .20 70 .20 80 .20
Acceptable 60 .40 220 .40 250 .60
Successful 130 .40 240 .40 415 .20

      
Using the coefficient of variation, rank the three alternatives in terms of risk from lowest to highest. (Do not round intermediate calculations. Round your answers to 3 decimal places.)     
  


In: Finance

Possible outcomes for three investment alternatives and their probabilities of occurrence are given next. Alternative 1...

Possible outcomes for three investment alternatives and their probabilities of occurrence are given next. Alternative 1 Alternative 2 Alternative 3 Outcomes Probability Outcomes Probability Outcomes Probability Failure 40 .20 90 .40 90 .30 Acceptable 60 .40 180 .20 280 .50 Successful 120 .40 240 .40 415 .20 Using the coefficient of variation, rank the three alternatives in terms of risk from lowest to highest. (Do not round intermediate calculations. Round your answers to 3 decimal places.)

In: Finance

Low birth weights are considered to be less than 2500 g for newborns. Birth weights are...

Low birth weights are considered to be less than 2500 g for newborns. Birth weights are normally distributed with a mean of 3150 g and a standard deviation of 700 g.

a) If a birth weight is randomly selected what is the probability that it is a low birth weight?

b) Find the weights considered to be significantly low using the criterion of a probability of 0.02 or less. That is, find the weight ranked as the lowest 2%.

c) Find the weight ranked as the highest 2%

d) Find the probability of a birth weight between 2600 g and 3500 g.

In: Math

A palindrome is a string that reads the same forward and backward, for example, radar, toot,...

A palindrome is a string that reads the same forward and backward, for example, radar, toot, and madam. Your task is to construct a python algorithm to receive as input a string of characters and check whether it is a palindrome using a stack and a queue. Your ADTs contains the following methods:

Queue

  • Queue() – constructor
  • enqueue(e) – enqueue an element
  • dequeue(e) – dequeue an element
  • len() – returns the number of elements in the queue

Stack

  • Stack() - constructor
  • push(e) – adds an element into the stack
  • pop(e) – removes an element of the stack
  • len() – returns the number of elements in the queue

Please explain the solution with details and document the code.

In: Computer Science

A recent survey identified the top accounting firms within 10 geographical regions across country X. The...

A recent survey identified the top accounting firms within 10 geographical regions across country X. The top 2 regions reported a combined growth of​ 19% and​ 18%. A characteristic description of the accounting firms in these two regions included the number of partners in the firms. Attached below is a sample of the number of partners for 2020 firms for each region. Complete​ (a) through​ (c) below.

a. At the 0.05 level of significance when pooling the​ variances, is there evidence of a difference between the two​ regions' accounting firms with respect to the mean number of​ partners? Let mu 1μ1 be the mean number of partners for the highest growth region and mu 2μ2 be the mean number of partners for the second highest growth region. Determine the hypotheses. Choose the correct answer below.

t Stat

Determine the critical​ value(s)

Choose the correct conclusion below.

Find the​ p-value in​ (a) and interpret its meaning.

Which of the following is the correct interpretation of the​ p-value?

c. What assumptions do you have to make about the two populations in order to justify the use of the t​ test?

Number of partners for 20 firms in the region with the highest combined growth 70 103 25 25 35 21 31 28 31 11 88 66 88 10 21 22 21 16 23 11

Number of partners for 20 firms in the region with the second highest combined growth 166 45 31 47 36 11 31 41 31 24 32 20 14 32 32 18 41 28 26 17

In: Statistics and Probability

On December 17, 2007 baseball writer John Hickey wrote an article for the Seattle P-I about...

On December 17, 2007 baseball writer John Hickey wrote an article for the Seattle P-I about increases to ticket prices for Seattle Mariners games during the 2008 season. The article included a data set that listed the average ticket price for each MLB team, the league in which the team plays (AL or NL), the number of wins during the 2007 season and the cost per win (in dollars). The data for the 16 National League teams are shown below.

team league price    wins cost/win
Arizona Diamondbacks NL 19.68 90 35.40
Atlanta Braves NL 17.07 84 32.89
Chicago Cubs NL 34.30 85 65.33
Cincinnati Reds NL 17.90 72 40.32
Colorado Rockies NL 14.72 90 26.67
Florida Marlins NL 16.70 71 38.13
Houston Astros NL 26.66 73 59.11
Los Angeles Dodgers NL 20.09 82 34.64
Milwaukee Brewers NL 18.11 83 35.37
N.Y. Mets NL 25.28 88 46.56
Philadelphia Phillies   NL 26.73 89 48.69
Pittsburgh Pirates NL 17.08 68 40.67
San Diego Padres NL 20.83 89 38.15
San Francisco Giants NL 24.53 71 56.00
St. Louis Cardinals NL 29.78 78 61.91
Washington Nationals NL 20.88 73 46.30



Compute the correlation between average 2007 price and number of 2007 wins for these 16 teams. (Assume the correlation conditions have been satisfied and round your answer to the nearest 0.001.)

In: Statistics and Probability

A piston cylinder device containing 0.5 kg of water has initial volume of 0.5L. The device...

A piston cylinder device containing 0.5 kg of water has initial volume of 0.5L. The device starts and goes through a Carnot cycle and generates 500.3 kJ work. If the maximum temperature that water will reach is 1.5 times the minimum temperature of water and during heat rejection process, water goes from saturated vapor to saturated liquid phase
Find:
1. QH & QL for this cycle (10 points).
2. TH & TL for this cycle (10 points).
3. Maximum and minimum pressures that the cycle will reach (20 points).
4. Show this process on a T-v diagram and label temperature, pressures and specific
volumes.
(To get full points, your states, and your processes should be accurately placed in relation to
isobaric lines and vapor dome) (10 points).
5. The expansion and compression of water in this device are quasi-equilibrium processes,
EXPLAIN why this process delivers the highest amount of work (5 points). 6. Find the pressure at remaining state(s) (Bonus 5 points)

In: Mechanical Engineering

Problem1. A piston cylinder device containing 0.5 kg of water has initial volume of 0.5L. The...

Problem1. A piston cylinder device containing 0.5 kg of water has initial volume of 0.5L. The device starts and goes through a Carnot cycle and generates 500.3 kJ work. If the maximum temperature that water will reach is 1.5 times the minimum temperature of water and during heat rejection process, water goes from saturated vapor to saturated liquid phase. Find: 1. QH & QL for this cycle (10 points). 2. TH & TL for this cycle (10 points). 3. Maximum and minimum pressures that the cycle will reach (20 points). 4. Show this process on a T-v diagram and label temperature, pressures and specific volumes. (To get full points, your states, and your processes should be accurately placed in relation to isobaric lines and vapor dome) (10 points). 5. The expansion and compression of water in this device are quasi-equilibrium processes, EXPLAIN why this process delivers the highest amount of work (5 points). 6. Find the pressure at remaining state(s) (Bonus 5 points)

In: Mechanical Engineering