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Agata [3.3K]
2 years ago
3

In the twentieth century, Xerox’s ____ had outstanding research personnel—at the time almost half of the world’s top 100 compute

r scientists. Select one: a. SPARK b. PARC c. INTC d. AMD
Computers and Technology
1 answer:
Marrrta [24]2 years ago
6 0

In the twentieth century, Xerox’s PARC had outstanding research personnel—at the time almost half of the world’s top 100 computer scientists

Explanation:

  • PARC is the part of XEROX, whereas, SPARK is owned by Adobe.
  • INTC is owned by Intel Corporation.
  • and AMD's major share is hold by the Intel Corporation.
  • Hence Xerox had the PARC, which enabled an outstanding research in the world, in the twentieth century.
  • Recent interest of the PARC is on wireless technology in the year 2017.

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You cannot change data directly in the PivotTable. Instead, you must edit the Excel table, and then ____, or update, the PivotTa
Fudgin [204]

Answer:

d. refresh

Explanation:

The Excel software does not allow a user to change values/data directly in the Pivottable. You will get an error message like "Cannot change this part of a PivotTable report" when you try to type data directly.  You will have to edit the Excel Table and then refresh to reflect the updated data.

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2 years ago
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Janice usually works on a particular workbook. She decides to keep a backup of all the data in a separate workbook. She opens a
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2 years ago
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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
With Voice over Internet Protocol (VoIP), _____. a. voicemails cannot be received on the computer b. call quality is significant
Pachacha [2.7K]

Answer:

c. Users can have calls forwarded from anywhere in the world

Explanation:

As all you need is the internet, there would be no need to try to sort out roaming as you would on a regular phone line

4 0
2 years ago
3.14 LAB: Input and formatted output: Caffeine levels A half-life is the amount of time it takes for a substance or entity to fa
nata0808 [166]

Answer:

#include <iostream>

#include <iomanip>

using namespace std;

int main()

{

double caffeineMg;

cin>>caffeineMg;

cout<<"After 6 hours: "<<fixed<<setprecision(2)<<caffeineMg/2.0<<" mg\n";

cout<<"After 12 hours: "<<fixed<<setprecision(2)<<caffeineMg/4.0<<" mg\n";

cout<<"After 24 hours: "<<fixed<<setprecision(2)<<caffeineMg/8.0<<" mg\n";

return 0;

}

Explanation:

  • Declare a variable for caffeine and take the input from user.  
  • Print the results by dividing the caffeine by relevant Half Life.
  • Use setprecision function to display the result up to 2 decimal places.
8 0
2 years ago
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