Ransactions to a computer database are either new items or changes to previous items. the addition of an item can be completed less than 100 milliseconds 94% of the time, but only 20% of changes to a previous item can be completed in less than this time. if 30% of transactions are changes, what is the probability that a transaction can be completed in less than 100 milliseconds? round your answer to two decimal places (e. g. 98.76).

The probability that a transaction can be completed in less than 100 milliseconds if 30% of transactions are changes is 0.718

Step-by-step explanation:

Let A be the vent of new item

Let B be the event of transaction completed in less than 100 milliseconds

Since we are given that  30% of transactions are changes,

So,

We are given that The addition of an item can be completed less than 100 milliseconds 94% of the time

So,

We are also given that only 20% of changes to a previous item can be completed in less than this time.

So,

So, the probability that a transaction can be completed in less than 100 milliseconds :

=

=

=

Hence the probability that a transaction can be completed in less than 100 milliseconds if 30% of transactions are changes is 0.718

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step-by-step explanation:

i believe the answer is d.

hope it you! : d