One type of probabilty used practically everyday is:

a) experiental probability
b) scientific probability
c) frequency of occurence
d) None of the above

This does not look like an algebra question, nor one that will help teach you the subject.

I would say "all of the above" to this question.

c. frequency of occurence

To determine which type of probability is used practically every day, we need to understand the definitions of each option.

a) Experimental probability: This is the probability obtained through conducting experiments or data collection. It involves physically performing an experiment multiple times to determine the likelihood of obtaining a specific outcome.

b) Scientific probability: This term is not commonly used in probability theory. However, it could refer to using scientific methods or principles to calculate probabilities in specific situations.

c) Frequency of occurrence: This refers to the number of times an event occurs in a given set of trials or observations. It is commonly used to estimate probabilities based on the observed relative frequency of an event occurring in a large number of trials or occurrences.

Based on the options provided, the most appropriate answer would be c) frequency of occurrence. In our daily lives, we often make predictions or decisions based on our observations of how frequently certain events happen. For example, if we know that it usually takes us 15 minutes to get to work, we may estimate the probability of arriving on time based on our past experiences or observations.

So, the correct answer is c) frequency of occurrence.