Question 20 is 2/11 i believe
80/4=20
20x7=140
7 shoes = 140
Answer:
33%
Step-by-step explanation:
4.90*0.33=1.617
1.617+4.90=6.517≈6.50
Answer:
Step-by-step explanation:
Information given
n=370 represent the sample selected
estimated proportion of readers owned a laptop
is the value that we want to test
z would represent the statistic
represent the p value
Creating the hypothesis
We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
The statistic is:
(1)
Replacing we got:
Calculating the p value
We have a bilateral test so then the p value would be: