Problemas
Gianna has a bag that contains pineapple chews, cherry chews,and lime chews. She performs an experiment. Gianna randomly removes a chew from the bag, records the result, and returns the chew to the bag Gianna performs the experiment 49 times. The results are shown below: A pineapple chew was selected 25 times. A cherry chew was selected 21 times. A lime chew was selected 3 times. Based on these results , express the probability that the next chew Gianna removes from the bag will be cherry chew as a percent ...number.
Roztwór
Gerardo
élite · Tutor durante 8 años
4.1
(191 Votos)
Respuesta
The probability that the next chew Gianna removes from the bag will be a cherry chew is 42.86%.
Explicación
## Step 1The problem involves calculating the probability of an event, which is the selection of a cherry chew. The probability of an event is defined as the ratio of the number of times the event occurs to the total number of trials.## Step 2In this case, the event is the selection of a cherry chew, which occurred 21 times. The total number of trials is 49, which is the total number of times Gianna performed the experiment.## Step 3To find the probability, we divide the number of times the event occurred by the total number of trials. This gives us a decimal number.### **The formula for probability is:**### \( P(E) = \frac{n(E)}{n(S)} \)where \( P(E) \) is the probability of event
, \( n(E) \) is the number of times event
occurs, and \( n(S) \) is the total number of trials.## Step 4In this case, \( n(E) = 21 \) (the number of times a cherry chew was selected) and \( n(S) = 49 \) (the total number of trials).## Step 5Substituting these values into the formula, we get:### \( P(E) = \frac{21}{49} \)## Step 6This gives us a decimal number. To express this as a percentage, we multiply by 100.### \( P(E) = \frac{21}{49} \times 100 \)