Answer: 
Step-by-step explanation:
Given: Sample size: n = 41
Sample mean
degrees
Population standard deviation
degrees
Confidence level (c) = 80% =0.80
Significance level (a) = 1- c = 1-0.80 = 0.20
z-score for 80% confidence level : z = 1.2816 [from z-table]
Confidence level for population mean :-







Hence, 80% confidence interval for the temperatures in the freezer 
Answer:
Use this Formula m= y2 - y1 / x2-x2
Than find rise and run and graph it
Step-by-step explanation:
Answer: number 2
cuz its the only one that makes sense
A/b *100
For example,
30/600.
30/600=0.05
0.05*100=5%