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:
1.50
Step-by-step explanation:
8 x 1.50=12
25-12=13
13-4=9
9/6=1.5
Answer:
there are 1,679 students that don't play video games
Step-by-step explanation:
because 1938 - 259 =1,679