Question

In a certain hospital, the mean birth rate of a week was 35 . If the mean birth from Monday to Thursday was 32 and that of Thursday to Sunday was 36, find the number of births on Thursday​

Answer 1

Answer:27

Step-by-step explanation:

=Mean of birth rate in a week= 35
=No. of days in a week= 7
=Sum of the observation=35×7
=245

CASE 1 -

=Mean of birth rate from Monday to Thursday = 32
=No. of days from Monday to Thursday=4
=Sum of the observation=32×4
=128

CASE 2 -

=Mean of birth rate from Thursday to Sunday=36
=No. of days from Thursday to Sunday=4
=Sum of the observation=36×4
=144

Main Answer:

=(144+128)-245
=272-245
=27