Question

Find the number n of hours you need to study on Saturday so that mean number of hours you study per day is 1.5

Answer 1

Answer:

1 hour

Step-by-step explanation:

We are given that

Day       Hours

Sunday    0

Monday   1.5

Tuesday    2.5

Wednesday  2.5

Thursday       3

Friday            0

Saturday       n

Mean number of hours of  study per day=1.5

Mean=$\frac{sum\;of\;data\;}{total\;number\;of\;data\;points}$

Total number of days=7

Using the formula

$1.5=\frac{0+1.5+2.5+2.5+3+0+n}{7}$

$1.5\times 7=9.5+n$

$10.5-9.5=n$

$n=1$

Hence,  number of hours you need to study on Saturday=n=1