lines = [ { "name": "student19",
"test1": "70",
"test2": "70",
"test3": "83",
"test4": "99",
"test5": "97"
},
{
"name": "student20",
"test1": "68",
"test2": "68",
"test3": "81",
"test4": "74",
"test5": "76"
},
{
"name": "student21",
"test1": "74",
"test2": "73",
"test3": "84",
"test4": "84",
"test5": "69"
},]

I need to sort the test3 only in descending order using python lambda function.

it should look like something like this:

l_func=lambda line: here goes the function

return output=sorted(lines, key=l_func)

thanks

One of your new employees notes that your debt has a lower cost of capital ​(5​%) than your equity (15​%). ​So, he suggests that the firm swap its capital structure from 26​% debt and 74​% equity to 74​% debt and 26​% equity instead. He estimates that after the​ swap, your cost of equity would be 21​%.  

a. What would be your new cost of​ debt? Make your calculations based on your​ firm's pre-tax WACC.

b. Have you lowered your overall cost of​ capital?

Check if the following data set corresponds to normal distribution or not?

Life Expectancies for Men in European Countries in 2011:

73 79 67 78 69 66 78 74 71 74 79 75 77 71 78 78 68 78 78 71 81 79 80 80 62 65 69 68 79 79 79 73 79 79 72 77 67 70 63 82 72 72 77 79 80 80 67 73 73 60 65 79 66

Simulation and Expected Values: Yale Law School says 74% of their students pass the bar exam on their first try.

To simulate passing students, we could assign the random digits as:

00 to 49 = pass first try, 50 to 99 = fail first try

0 to 7 = pass first try, 8 to 9 = fail first try

00 to 73 = pass first try, 74 to 99 = fail first try

0 to 4 = pass first try, 5 to 9 = fail first try

The outcomes for this experiment are __________________, with a probability of ________________, and __________________, with a probability of __________________.

Check My Work

QUESTION 5

Use your TI83 (or Excel):

A normally distributed population has a mean of 72 and a standard deviation of 14. Determine the probability that a random sample of size 35 has an average of less than 73.

Round to four decimal places.

QUESTION 6

A normally distributed population has a mean of 71 and a standard deviation of 15. Determine the probability that a random sample of size 26 has an average greater than 74.

Round to four decimal places.

QUESTION 7

A normally distributed population has a mean of 76 and a standard deviation of 14. Determine the probability that a random sample of size 25 has an average of less than 74.

Round to four decimal places.

QUESTION 8

Use your TI83 (or Excel):

A normally distributed population has a mean of 76 and a standard deviation of 16. Determine the probability that a random sample of size 36 has an average greater than 74.

Round to four decimal places.

A company produces electric motors for use in home appliances. One of the company’s managers is interested in examining the relationship between delivery costs in a month and the number of motors produced that month that were returned by dissatisfied customers (Y). He has collected the data in the file.Write the theoretical formula and calculate using excel the r-square of the regression equation and interpret the result.

1. Find x and y so that the ordered data set has a mean of 42 and a median of 35, hence compute the harmonic mean and geometric mean of the data sample.

       17, 22, 26, 29, 34, x, 42, 67, 70, y                                                         

2. The lengths, in centimeters, of 18 snakes are given below. Draw an ordered stem-and-leaf diagram for the data.                                                                                                                                    

24, 62, 20, 65, 27, 67, 69, 32, 40, 53, 55, 47, 33, 45, 55, 56, 49, 58

3. Costs of production have been monitored for some time within a company and the following data found:

1. Calculate the correlation coefficient.                                                                        
2. Calculate the coefficient of determination and explain its significance for the company.                                                                                                                                                   

4. Using the following frequency distribution table;

Find

1. The mean                                                                                                       
2. Median                                                                                                           
3. Standard deviation                                                                                         
4. Coefficient of skewness and comment                                                          

5. A single fair die is tossed. What is the probability that the score is a prime number?                
6. The following data represents the comparison made between the price of a consumer product and the corresponding demand.

      Determine the linear regression equation of the form y= a+bx that relates price (x) and demand (y).                                                                                                                                                                        

7. An integer is randomly selected between 1 and 50, inclusively. Find the probability that the number is not divisible by 7.                                                                                                                              

There are three arrangements of the word DAD, namely DAD, ADD, and DDA. How many arrangements are there of the word PROBABILITY?            

Five observations taken for two variables follow.X= 6 10   15   20   27 Y= 6   10   6   18   12 a. What does the scatter diagram indicate about a relationship between and ? b. Compute the sample covariance (to 2 decimal). c Compute the sample correlation coefficient (to 3 decimals). What can you conclude, based on your computation of the sample correlation coefficient?   

25. In Data Mining, ___ is a set of input variables used to predict an observation's outcome class or continuous outcome value.

26. During each iteration of cluster analysis, the distances between new clusters are determined until any two clusters are sufficiently close to be linked using an algorithm called ___.

27. In the CRISP-DM process for data mining, which phase is the cleaning of the data so it is ready for modeling tools?