1. The oce manager at a real estate firm makes a pot of co↵ee every morning. The time before it runs out, y, in hours, depends on the number of persons x, working in the oce on that day. Suppose that the pairs of (x, y) values from n = 6 days are given in table below. Number of people, x 1 2 3 3 4 5 Time before co↵ee runs out, y 8 4 5 3 3 1 (a) Calculate the standard deviation of responses, s (follow steps on pages 88 and 89). (b) Calculate the 95% confidence interval for average number of hours when x⇤ = 4 people are working in the oce (follow steps on page 90). (c) Interpret your interval from part (b). 94 (d) Calculate and interpret the 95% prediction interval for the number of hours when x⇤ = 4 people are working in the oce (follow steps on page 91). (e) Interpret your interval from part (d). (f) Calculate r2 (follow steps on page 92). (g) Interpret r2. (h) Compute linear correlation coecient r (follow steps on page 93). (i) Interpret r.

In an ionic bond, (pick one).

Given are data for two variables, x and y.

(a) Develop an estimated regression equation for these data. (Round your numerical values to two decimal places.)

ŷ =  

(b) Compute the residuals. (Round your answers to two decimal places.)

(d) Compute the standardized residuals. (Round your answers to two decimal places.)

Consider the following data for two variables, x and y.

(a) Compute the standardized residuals for these data. (Round your answers to two decimal places.)

The standardized residual with the largest absolute value is _____ .

Two fair six sided dice are rolled.

(i) What is the probability that the smaller value of the two results is 3 given that the sum of the two results is 8?

(ii) What is the probability that the sum of the two results is at most 5 given that the number 2 appeared at least once?

(iii) What is the probability that the sum of the two results is 7 given that exactly one of the two results is odd?

2 algorithms for Prefix Averages, one that ran in big-Oh n2 time and a
second that ran in big-Oh n time. Code up methods for both algorithms. Show through different
input examples and using the Current Time method call how the polynomial time algorithm runs
slower than the linear time version. Use system.out.println statement to show your results.

please who can help with this question In Java
Thank you

AstraZeneca plc (AZN) stock was trading at $45 in AUG and the following options prices are available: SEPT 40 put - $1.50 SEPT 50 call - $1 Consider a short strangle using AZN by selling one SEPT 40 put and one SEPT 50 call. Answer the following questions. A) What is the maximum profit you would expect from the strangle? B) What are the two break-even prices for AZN on expiration? C) What is the maximum loss you might experience from the strangle? D) The stock price declined to $39 on the expiration. What is the amount of profit or loss from the short strangle?

1. A car dealer believes that average daily sales for four different dealerships in four separate states are equal. A random sample of days results in the following data on daily sales:

Ohio                New York       West Virginia              Pennsylvania

               3                          10                         3                                  20

               2                            0                         4                                  11

               6                            7                         5                                  8

               4                            8                                                             2

               4                            0                                                             14

               7

               2

Use ANOVA to test this claim at the 0.05 level.

2. Use Excel to support your answers to Question 1. Submit your completed Excel spreadsheet.

3. Suppose we have the following data on variable X (independent) and variable Y (dependent):

X         Y

2          70

0          70

4          130

1. By hand, determine the simple regression equation relating Y and X.

2. Calculate the R-Square measure and interpret the result.

3. Calculate the adjusted R-Square.

4. Test to see whether X and Y are significantly related using a test on the population correlation. Test this at the 0.05 level.

5. Test to see whether X and Y are significantly related using a t-test on the slope of X. Test this at the 0.05 level.

6. Test to see whether X and Y are significantly related using an F-test on the slope of X. Test this at the 0.05 level.

4. Suppose we have the following values for a dependent variable, Y, and three independent variables, X1, X2, and X3. The variable X3 is a dummy variable where 1 = male and 2 = female:

X1       X2       X3       Y

0          40        1          30

0          50        0          10

2          20        0          40

2          50        1          50

4          90        0          60

4          60        0          70

4          70        1          80

4          40        1          90

6          40        0          70

6          50        1          90

8          80        1          100

9          90        0          80

9          20        1          150

1. Run the multiple regression in Excel and provide the resulting multiple regression equation.
2. Provide the R-Square measure. Is this a good regression model? Explain. Use a level of significance of 0.05 in any tests you consider.

3. Which variables are important in explaining Y when the level of significance is 0.05? Is the dummy variable important at this level of significance? Discuss what the coefficients mean regarding the effect of each variable on Y.

4. Suppose a female with X1 = 5 and X2 = 80 is selecte What would be her predicted value of Y?

5. What types of problems might exist in this multiple regression?

The Roger’s Company incurred the following costs in the acquisition of a plant asset:What is the cost of the plant asset? Can explain

How does gender socialization influence who runs for office and for whom we vote? How are female politicians treated by the media, compared with male politicians? How has that impacted your own perception of female politicians?

IN SWIFT LANGUAGE

In this lab we are going to create a game that uses all the different types of control flow operators that exist in SWIFT LANGUAGE.

The game will be a choose your own adventure game. The user will have to answer a series of questions and this will change the path of a story. This must be done by using if/else statements that are nested within other if/else statements. Your story must have four (4) different possible endings. Beyond this, you must provide some setup for the story to provide customized messages. Ask the user questions that will be used to capture details for use within the story.

Ask the user at least one question that has them choose something from a list of possible values and use a switch to set the appropriate variable.

Ask the user at least one question that results in a numeric range and use an interval switch to set another variable.

Also ask the user a binary (yes/no or true/false) question. Use the answer from this in a ternary to store another variable.

Use these variables within the output of the messages to the user in the story.

Example:

Example Program Output

Here is an example of a how the program might work...

Enter your favorite color?
Pick "red", "orange", "yellow", "green", or "blue"
> red

Do you like apples? "Yes" or "No"?
> Yes

How fast can you run a mile? Enter as a decimal number.
> 8.5

You are walking down the street eating some apples when a red tiger runs up and takes your lunch and then quickly runs away. 

Do you want to "chase" the tiger or "run away"?
> run away

You run away from the tiger but it is a bad idea to run from an animal. It turns and decides to try to eat you. You see a bus blocking your path up ahead. Do you "get on" the bus or "go around"?
> go around

There is a zoo keeper on the other side of the bus only to see a subway entrance. He captures the tiger and you are saved.

The End.

But then if you ran it again it might do this...

Enter your favorite color?
Pick "red", "orange", "yellow", "green", or "blue"
> green

Do you like apples? "Yes" or "No"?
> No

How fast can you run a mile? Enter as a decimal number.
> 20

You are walking down the street eating some oranges when a green tiger runs up and takes your lunch and then walks away.

Do you want to "chase" the tiger or "run away"?
> chase

The tiger runs but falls into the river. Do you "help it" or "leave it"?
> help it

You save the tiger and it is grateful. You have a new pet.

The End.