Question

the following dot plot summarizes the number of vitamins jennifers mom took each day since she started her new diet. each dot represents one day. based on this data, what is the probability that jennifers mom took exactly 6 vitamins a day? probability = write the probability as a decimal rounded to the nearest hundredth.

Explanation:

Step1: Count total number of days

Count all the dots. There are 2 + 1+ 3 + 1+ 4+ 1+ 1 = 13 dots, so the total number of days is 13.

Step2: Count number of days with 6 vitamins

Count the number of dots above 6. There are 4 dots above 6.

Step3: Calculate probability

The probability formula is $P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. Here, the number of favorable outcomes (days with 6 vitamins) is 4 and the total number of outcomes (total days) is 13. So $P = \frac{4}{13}\approx 0.31$.

Answer:

0.31