## Related questions with answers

Question

Five pulse rates randomly selected and have a mean of 78.0 beats per minute. Four of the pulse rates are 82, 78, 56, and 84.Find the mis ing value.

Solution

VerifiedStep 1

1 of 3Given values: 82, 78, 56, 84

Let the missing value be $x$.

The mean is 78.0.

The mean is the sum of all values, divided by the number of values:

$\overline{x}=\dfrac{82+78+56+84+x}{5}=\dfrac{300+x}{5}$

The mean is equal to 78.0:

$\dfrac{300+x}{5}=78.0$

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