Exercises 1–5
1. suppose a random sample of size ten produced the following ratings in the computer games rating example in the
last lesson: 12, 5, 2, 4, 1, 4, 18, 10, 1, 16. estimate the population mean rating based on these ten sampled ratings.

 The estimated value for population mean rating based on these ten sampled ratings is 7.3 .

Step-by-step explanation:

Given : A random sample of size ten produced the following ratings in the computer games rating example in the  last lesson:

12, 5, 2, 4, 1, 4, 18, 10, 1, 16.

Let x denotes any value in the above data.

We know that the sample mean is the best estimate to the population mean.

Sample mean=

Here , n= 10

Therefore , the estimated value for population mean rating based on these ten sampled ratings= 7.3

hello :

70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)

the lenght is : 35 y^8

the width is : 15y^6