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1 year ago

Write the printItem() method for the base class. Sample output for below program:

Computers and Technology

1 answer:

Anna [14]1 year ago

4 0

Answer:

The printItem() method code is filled in the explanation, highlighted with bold font.

Explanation:

// ===== Code from file BaseItem.java =====

public class BaseItem {

protected String lastName;

public void setLastName(String providedName) {

lastName = providedName;

return;

}

// FIXME: Define printItem() method

/* Your solution goes here */

public void printItem() {

// TODO Auto-generated method stub

System.out.println("Last name: "+lastName);

}

// ===== end =====

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Lance is at a bus station. His friend is using the ATM machine to withdraw some money. Lance notices a stranger deceptively watc

Blababa [14]

Answer:

The person watching Lances friend typing the ATM pin is an example of "shoulder browsing" and Lances friend should "Change the ATM pin."

I hope this is the answer you were looking for!

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2 years ago

Read 2 more answers

An app builder has created a report for sales people to view records from the custom object, some users have complained that the

Mila [183]

Answer:

There is a need for some people to see the total transparency of the records that are meant to be shared with a select group of people. There are certain things that can be done for this. The first one is that the sharing rules should be checked. To whom are the details shared with. The next one is the filters that are used.

These can be reported and changed accordingly. Lastly, the whole organization’s defaults can be checked. This is something that can be done when the previous methods that were done did not work that well. Once some changes are done, the people can check if they already work and if the records can be viewed.

Explanation:

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2 years ago

Find a 95% confidence interval for the mean failure pressure for this type of roof panel.The article "Wind-Uplift Capacity of Re

aliya0001 [1]

Answer:

The 95% confidence interval would be given by (2.351;3.525)

Explanation:

1) Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

2) Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

The mean calculated for this case is $\bar X=2.938$

The sample deviation calculated $s=0.472$

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=5-1=4$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,4)".And we see that $t_{\alpha/2}=2.78$

Now we have everything in order to replace into formula (1):

$2.938-2.78\frac{0.472}{\sqrt{5}}=2.351$

$2.938+2.78\frac{0.472}{\sqrt{5}}=3.525$

So on this case the 95% confidence interval would be given by (2.351;3.525)

5 0

2 years ago

Which of the following would not be considered metadata for a spreadsheet file?

Genrish500 [490]

Answer:

Explanation:

Metadata is a type of data that dispense details of other data. In simple terms, metadata can be defined as information of a file such as file name, attributes, etc.

In excel sheet, metadata works the same and helps to provide information about file name, author name, file size, attributes such as read-only, archieve, hidden, system, location of the file, date and time of creation, modification, or accessed, type of file, etc.

From the given options, the information that is not considered or included in metadata is calculation inside the file. Metadata in excel sheet does not include calculations inside the file. Thus option B is the correct answer

7 0

2 years ago

A large software development company employs 100 computer programmers. Of them, 45 areproficient in Java, 30 in C, 20 in Python,

melisa1 [442]

Answer:

18, 13, 19

Explanation:

Number of computer programmers proficient only in Java = 45 - ( 1+1+6) = 37

Number of computer programmers proficient only in C++ = 30 - (6+1+5) = 18

Number of computer programmers proficient only in python = 20 - ( 1+1+5) = 13

Number of computer programmers are not proficient in any of these three languages = 100 - ( 37 + 18 + 13 + 1+ 1+ 5+ 6 ) = 100 - 81 = 19

4 0

2 years ago