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 )
B.
it's literally common sense
Answer:
<u>Property</u>
Explanation:
Intellectual Property (IP) is the lawful protection of human idea/intellect by unauthorised users. These human intellects are intangible assets that have both moral and commercial value. They include ideas, art, music, movies, software e.t.c.
Common types of Intellectual property include
- Copyrights
- patents
- Trade Marks
- Trade Secrets
Answer:
Data manipulation languages are used for the retrieval of the,insertion,deletion and modification of data.
Explanation:
Data Manipulation Languages(DML) are used to insert,delete,update,modify the data in the database.
The commands used to do these operations are as following:-
INSERT INTO :-This command is used to insert values in the database.
DELETE:-It is used to delete existing records from the table.
UPDATE:- It is used to modify the records in the table.
SELECT:- It is used to select data from database.
The standard QWERTY layout keyboard is called 'QWERTY' because on the top line of the keyboard the first 6 letters from chronological left to right order are; Q, W, E, R, T, and Y.
Or...if you're wondering why it's QWERTY and not ABCDEF, it's because when typing with the alphabetical format, many of the keys would clash with each other due to the arrangement of keys on the original typewriter. The QWERTY layout became so popular, it was the standardized layout for typewriters, and even keyboards today.