Three similar coins were tossed simultaneously 500 times and the frequency distribution of heads obtained on each toss is as below- array - c - c -extFrequency - 60 - 175 - 200 - 65 Whline lendarrayFind the probability of i getting all three heads-ii getting an odd number of heads- -2 MARKS-

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Standard VII

Mathematics

Frequency

Three similar...

Question

Three similar coins were tossed simultaneously 500 times and the frequency distribution of heads obtained on each toss is as below.

$\begin{matrix} Number of heads & 0 & 1 & 2 & 3 Frequency & 60 & 175 & 200 & 65 \end{matrix}$

Find the probability of (i) getting all three heads;

(ii) getting an odd number of heads. [2 MARKS]

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Solution

Concept: 1 Mark
Solution:0.5 Mark each

Probability of getting all three heads = 65/500 = 0.13
Probability of getting an odd number of heads = (65+175)/500 = 0.48.

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Three similar coins were tossed simultaneously 500 times and the frequency distribution of heads obtained on each toss is as below. Number of heads0123Frequency6017520065 Find the probability of (i) getting all three heads; (ii) getting an odd number of heads. [2 MARKS]

Concept: 1 Mark Solution:0.5 Mark each Probability of getting all three heads = 65/500 = 0.13 Probability of getting an odd number of heads = (65+175)/500 = 0.48.

Concept: 1 Mark
Solution:0.5 Mark each

Probability of getting all three heads = 65/500 = 0.13
Probability of getting an odd number of heads = (65+175)/500 = 0.48.