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A coin is tossed 500 times and we get ...

A coin is tossed 500 times and we get
heads : 285 times and tails : 215 times
When a coin is tossed at random , what is probability of getting
(i) a head ? (ii) a tail ?

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem step by step, we will calculate the probability of getting heads and tails when a coin is tossed based on the given data. ### Step-by-Step Solution: 1. **Identify the total number of tosses**: The total number of times the coin is tossed is given as 500. 2. **Count the number of heads**: The number of times heads appeared is given as 285. 3. **Count the number of tails**: The number of times tails appeared is given as 215. 4. **Calculate the probability of getting heads**: The probability of an event is calculated using the formula: \[ P(\text{Head}) = \frac{\text{Number of favorable outcomes (Heads)}}{\text{Total number of outcomes (Tosses)}} \] Substituting the values: \[ P(\text{Head}) = \frac{285}{500} \] Now, simplifying this fraction: \[ P(\text{Head}) = 0.57 \] 5. **Calculate the probability of getting tails**: Similarly, we calculate the probability of getting tails: \[ P(\text{Tail}) = \frac{\text{Number of favorable outcomes (Tails)}}{\text{Total number of outcomes (Tosses)}} \] Substituting the values: \[ P(\text{Tail}) = \frac{215}{500} \] Now, simplifying this fraction: \[ P(\text{Tail}) = 0.43 \] ### Final Answers: - (i) The probability of getting a head is **0.57**. - (ii) The probability of getting a tail is **0.43**.
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Knowledge Check

  • A coin is tossed 600 times with the frequencies as : heads : 342 and tails : 258 If a coin is tossed at random , what is the probability of getting (i) a head ? " " (ii) a tail ?

    A
    ` 0.77` , `0.83`
    B
    ` 0.37` , `0.33`
    C
    ` 0.57` , `0.43`
    D
    ` 0.47` , `0.53`
  • Two coins are tossed simultaneously 400 times and we get two heads : 180 times one head : 148 times no head : 72 times . If two coins are tossed at random , what is the probability of getting (i) 2 heads ? (ii) 1 head ? (iii) 0 head ?

    A
    `0.45` , `0.37` , `0.18`
    B
    `0.47` , `0.27` , `0.13`
    C
    `0.40` , `0.30` , `0.10`
    D
    `0.65` , `0.67` , `0.68`
  • A coin is tossed three times.What is the probability of getting no tail ?

    A
    `(1)/(2)`
    B
    `(3)/(8)`
    C
    `(5)/(8)`
    D
    `(1)/(8)`
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