The model that describes how data is written to a blockchain is the: append-only data structure.
<h3>What is an Append-only Data Structure?</h3>
Append-only is computer data storage property whereby new data can be added to a blockchain, like an additional block, in a time-ordered sequential order in such a way that the data added cannot be easily altered as al data are permanently stored across all nodes.
The append-only data structure makes data stored almost immutable. This is the model in which the blockchain technology is built on.
Therefore, the model that describes how data is written to a blockchain is the: append-only data structure.
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Your answer is letter D- Groceries
Answer:
because Science and technology gives you solid proof. ... But that is not the case with humanity and social sciences. It is perspectives, attitudes, and emotions.
According to the result of the test statistic, the p-values are given by:
a) 0.0352.
b) 0.9648.
c) 0.0704.
<h3>How to find the p-value of a test?</h3>
It depends on the test statistic z, as follows.
- For a left-tailed test, it is the area under the normal curve to the left of z, which is the <u>p-value of z</u>.
- For a right-tailed test, it is the area under the normal curve to the right of z, which is <u>1 subtracted by the p-value of z.</u>
- For a two-tailed test, it is the area under the normal curve to the left of -z combined with the area to the right of z, hence it is <u>2 multiplied by 1 subtracted by the p-value of z.</u>
In this problem, the test statistic is z = 1.8, which has a p-value of 0.9648.
Item a:
Right-tailed test, hence the p-value is of 1 - 0.9648 = 0.0352.
Item b:
Left-tailed test, hence the p-value is of 0.9648.
Item c:
Two-tailed test, hence the p-value is of 2 x (1 - 0.9648) = 2 x 0.0352 = 0.0704.
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