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:
Microsoft Excel
Explanation:
Microsoft Excel is a Microsoft application package. It is a spreadsheet application used to analyse and manipulate data. It has columns which are referred to fields and rows also known as records.There are various features in excel that used to create statistical and graphical esctasies and data presentations.
It can be used to create template for CVs/resumes, Bank draft, receipts and invoice etc.
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Answer:
A. The proposed solution delivers the required result and both optional desired results.
Explanation:
The IEEE 802.11a is the standard code of the wireless communication technology known as WIFI, it is wireless as it requires no cable to connect to a network device. The data transmission rate of the IEEE 802.11a is 1.5 - 54Mbps (mega bit per second). So, the employees in the TVBCA building can wireless connect to the network, which allows them to be mobile and they can also send large CAD files among themselves.
Answer:
Incomplete Question.
I'll answer this question based on general terms
Explanation:
Two Factor Authentication, abbreviated as 2FA.
It is a type of authentication that requires the presentation of two credentials for access to personal data and information.
The credentials needed for a 2FA are
1. Either of the following; PIN, Password or Pattern
2. Your device or gadget which could be an ATM Card, Mobile Phone
3. Biometrics such as fingerprint, voice input
Number one is often referred to as "Something you know"
Number two is referred to as "Something you have"
Number three is referred to as "Something you are"
The 2FA doesn't require the three aforementioned credentials. It only needs just two of the credentials to provide its authentication.