* Main Electron a component- vacuum tube.
* Main memory- Magnetic drums and magnetic tapes.
* Programming language- Machine language.
* Power- Consume a lot of electricity and generate a lot of heat.
* were expensive to operate
Answer:
D
Explanation:
As it's not fair if they all lose there privileges
Answer:
The correct Answer is 0.0571
Explanation:
53% of U.S. households have a PCs.
So, P(Having personal computer) = p = 0.53
Sample size(n) = 250
np(1-p) = 250 * 0.53 * (1 - 0.53) = 62.275 > 10
So, we can just estimate binomial distribution to normal distribution
Mean of proportion(p) = 0.53
Standard error of proportion(SE) = 
= 
= 0.0316
For x = 120, sample proportion(p) = 
= 
= 0.48
So, likelihood that fewer than 120 have a PC
= P(x < 120)
= P( p^ < 0.48 )
= P(z < 
) (z=
)
= P(z < -1.58)
= 0.0571 ( From normal table )
Answer:
1946
First, to deal with the more recent and most familiar meaning of the word ‘computer’: the word first came to mean an electronic device used to store and communicate information (and all of its subsequent functions) only in the 1940s: the earliest citation in the Oxford English Dictionary is from 1946. This is fitting.
Explanation:
Yes, a text file with a .txt extension can be read by Linux/Unix/Mac as they are ASCII unformatted.
