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രണ്ടു നാണയങ്ങൾ കറക്കുമ്പോൾ ലഭിക്കുന്ന തലകളുടെ (head) എണ്ണത്തിന്റെ പ്രതീക്ഷിത വില കണക്കാക്കുക.

A0

B-1

C1

D2

Answer:

C. 1

Read Explanation:

S ={ HH , TT , TH , HT}

x

0

1

2

P(x)

1/4

2/4

1/4

$E(x)=ΣxP(x)=0 \times 1/4+1\times2/4+2\times1/4=1$


Related Questions:

The table below shows that employees in an office , sorted according to their age. Find the median:

Age

Number of workers

25 - 30

4

30 - 35

7

35 - 40

8

40 - 45

10

45 - 50

9

50 -55

8

Total

46

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