considering the Food and General Merchandise types of retailers (not Service): What type of retailer do you think is experiencing the biggest growth? Why? What type of retailer do you think is decreasing in popularity? Why? Now thinking of Service Retailers: Why are these types of retailers growing significantly? What specific service retailer do you think does a really good job, meaning it runs very efficiently and takes good care of its customers?

In C ++, Design and implement a program that reads from the user four integer values between 0 and 100, representing grades. The program then, on separate lines, prints out the entered grades followed by the highest grade, lowest grade, and averages of all four grades. Format the outputs following the sample runs below.

Sample run 1:

You entered:    95, 80, 100, 70

Highest grade: 100

Lowest grade:   70

Average grade: 86.25

(7) The following values were obtained for the nitrate concentration (mg/L) in a sample of river water: 0.403, 0.410, 0.401, and 0.380. The last measurement is suspect. Based on this data set only, should it be rejected? Justify your answer.

(8) Three further measurements were added to those given in question (7) so that the complete results became: 0.403, 0.410, 0.401, 0.380, 0.400, 0.413, and 0.411. Should “0.380” still be retained/rejected? Justify your answer.

(9) Based on questions (7) and (8), formulate one paragraph with a procedure you will always follow upon facing “suspicious” results.

What was the Seven Years' War? And the French and Indian War....what was that? Same conflict? And last I checked, the Seven Years' War lasted from 1754-1763 . . . which is nine years. Explain.

Researchers at two universities found that airlines are doing a better job of getting passengers to their destinations on time. Company A and Company B Airlines were among the leaders in on-time arrivals with both having 88% of their flights arriving on time. But for the 12% of flights that were delayed, how many minutes were these flights late? Sample data showing the number of minutes that delayed flights were late are shown below for both airlines. Use Excel to run a two-sample t-test assuming unequal variances to answer the questions.

(a)

Formulate the hypotheses that can be used to test for a difference between the population mean minutes late for delayed flights by these two airlines. (Let μ₁ = population mean minutes late for delayed Company A flights and μ₂ = population mean minutes late for delayed Company B flights.)

H₀: μ₁ − μ₂ ≤ 0

H_a: μ₁ − μ₂ > 0

H₀: μ₁ − μ₂ ≥ 0

H_a: μ₁ − μ₂ < 0

H₀: μ₁ − μ₂ = 0

H_a: μ₁ − μ₂ ≠ 0

H₀: μ₁ − μ₂ ≠ 0

H_a: μ₁ − μ₂ = 0

H₀: μ₁ − μ₂ < 0

H_a: μ₁ − μ₂ = 0

(b)

What is the sample mean number of minutes late for delayed flights for each of these two airlines? (Round your answers to two decimal places.)

Company A minCompany B min

(c)

Calculate the test statistic. (Round your answer to three decimal places.)

What is the p-value? (Round your answer to four decimal places.)

p-value =

Using a 0.05 level of significance, what is your conclusion?

Do not Reject H₀. There is statistical evidence that one airline does better than the other in terms of their population mean delay time.Reject H₀. There is statistical evidence that one airline does better than the other in terms of their population mean delay time.    Reject H₀. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.Do not reject H₀. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.

An engine manufacturer has observed failures with their product. In the last 6 years, they have experienced 2 engine failures one year, 3 engine failures in two consecutive years, 4 engine failures one year, and 5 engine failures in each of the preceding two years (two in the last month, alone).

The CEO of the engine manufacturer wants to reassure customers. He promises that in the next month, there will not be multiple engine failures (no more than 1 failure).

Assume the probability of failure is exponential.

The CEO asks you to calculate the probability that they are correct: What is the probability there will be no more than a single engine failure in the next month?

Write a C program to Declare an integer array of size 10 with values initialized as follows.

int intArray[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

Compute each item of a new array of same size derived from the above array by:

adding first item (intArray[0]) of the array with 3rd, 2nd with 4th, 3rd with 5th and so on. For the last-but-one item intArray[8], add it with first item and for the last item (intArray[9]) add it with 2nd item (treat it as a circular array).

Print all items of the new array in a single line.

n Java,

Create a class called Complex for performing arithmetic with complex numbers. Complex numbers have the form

realPart + imaginaryPart * i

where i is square root of -1

Use floating-point variables to represent the private data of the class. Provide a constructor that enables an object of this class to be initialized when it is declared.

Provide a no-argument constructor with default values in case no initializers are provided. Provide public methods that perform the following operations:

a) Add two Complex numbers: The real parts are added together and the imaginary parts are added together.   So, if we have (a + bi) + (c + di)), the result should be (a + c) + (b + d) i.

b) Subtract two Complex numbers: The real part of the right operand is subtracted from the real part of the left operand, and the imaginary part of the right operand is subtracted from the imaginary part of the left operand. So, if we have (a + bi) - (c + di)), the result should be (a - c) + (b - d) i.

c) Multiply two Complex numbers: The real part of the result is the real part of the right operand multiplies the real part of the left operand minus the imaginary part of the right operand multiply the imaginary part of the left operand. The imaginary part of the result is the real part of the left operand multiply the imaginary part of the left operand plus the imaginary part of the left operand multiply the real part of the right operand. So, if we have (a + bi) * (c + di)), the result should be (ac - bd) + (ad + bc) i.

d) Division two Complex numbers: We set the value of square real part of the denominator plus square imaginary part of the denominator is A. The real part of the result is the real part of the numerator multiplies the real part of the denominator plus the imaginary part of the numerator multiply the imaginary part of the denominator and divided by A. The imaginary part of the result is the real part of the left operand multiply the imaginary part of the left operand plus the imaginary part of the left operand multiply the real part of the right operand. So, if we have (a + bi) / (c + di)), the result should be (ac+bd)+i(bc-ad))/(c²+d²).

e) Print Complex numbers in the form (a, b), where a is the real part and b is the imaginary part.

A public class (Complex as in this assignment’s demo programs) should be implemented to do complex number calculation.

In the main function (ComplexTest as in the demo) you will instantiate two Complex class objects, call Complex class’s Addition, Subtraction, Multiply, Division function and print out the result of the calculations.

The following are the specifications for this assignment.

Complex.java

There are two private double data members (real and imaginary). The real stores the real part of a complex number and the imaginary stores the imaginary part of a complex number.

There are seven public functions (two Complex, add, subtract, multiply, division, and toString) in this classes.

1. The first Complex function does not take any data. (or call no argument constructor) It initializes 0s to the private data members.
2. The second Complex function takes two double numbers. (or call two-argument constructor) It assigns the two numbers to the private data members.
3. The add function takes one Complex object and returns one Complex object. The function does two complex numbers addition.
4. The subtract function takes one Complex object and returns one Complex object. The function does two complex numbers subtraction.
5. The multiply function takes one Complex object and returns one Complex object. The function does two complex numbers multiplication.
6. The division function takes one Complex object and returns one Complex object. The function does two complex numbers division.
7. The toString function returns a String object but does not take any data. The function returns a parenthesis string which represents complex number. The numbers are in floating point format with only one digit after decimal point.

ComplexTest.java

It contains main function (driver) for this assignment. In the main function you have to do

1. Create two Complex objects with value of (9.5, 7.7) and (1.2, 3.1).
2. Print a proper formatted headline “A complex number in the form (x, y) is equal to x + yi, where i is square root of -1.”
3. Print a second headline "*-Complex numbers calculations-*".
4. If an object contains (9.5, 7.7 ) and b object contains ( 1.2, 3.1 ). The program will use System.out.printf function to display information by calling a.toString(), b.toString(), a.add( b ).toString(), a.subtract( b ).toString(),a.multiply( b ).toString(), and a.division( b ).toString() as arguments.

Answer the one-way ANOVA questions using the data below. Use α = 0.01.

a) Compute the preliminary statistics below.
SS_BG =  ;   df_BG =  
SS_WG =  ;   df_WG =  
SS_T =  ; df_T =  

b) Compute the appropriate test statistic(s) to make a decision about H₀.
critical value =  ; test statistic =  
Decision:  ---Select--- Reject H0 Fail to reject H0

c) Compute the corresponding effect size(s) and indicate magnitude(s).
η² =  ;  ---Select--- na trivial effect small effect medium effect large effect

d) Make an interpretation based on the results.

At least one mean is different from another.None of the means differed from one another.