Exploratory challenge 1/exercises 1–3: estimate the population mean rating
1. working with your partner, discuss how you would calculate the mean rating of all 100 computer games (the population mean).

7200

aye bru this a great thing your doin here.

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

a

step-by-step explanation:

the answer is a