Concept explainers
a.
To find : the number of times the ad appears.
a.
Answer to Problem 19E
About 400 times the ad appear.
Explanation of Solution
Given information :
The probability that an ad appears when a particular website is loaded is 0.2. The website gets 2000 hits a day.
Calculation :
Since, the probability that an ad appears when a particular website is loaded is 0.2. So, to find how many times the ad appears multiply the probability with the number of hits in a day. Therefore,
Hence,
About 400 times the ad appear.
b.
To find : the numbers hits the website must have so that the ad appears 1000 times.
b.
Answer to Problem 19E
The website has 20,000 hits for the website so that the ad appears 1000 times.
Explanation of Solution
Given information :
The fraction of number of cookies to bake with the number of cookies the recipe makes is
Calculation :
Since, the probability that an ad appears when a particular website is loaded is 0.05 and it appears 1000 times, so to find out number of hits divide the appearance of ad with the probability of appearing.
Hence,
The website has 20,000 hits for the website so that the ad appears 1000 times.
Chapter 6 Solutions
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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