Answer: 1.509
Step-by-step explanation:
The formula of Margin of Error for (n<30):-

Given : Sample size : n= 22
Level of confidence = 0.99
Significance level : 
Using the t-distribution table ,
Critical value : 
Standard deviation: 
Then, we have

Hence, the margin of error for a 99% confidence interval for the population mean =1.509
53-49=4
4 times 12=48. the unknown number is 48
Answer:
11
Step-by-step explanation:
7,8,10,12,15,16
12+10=22÷2=11
5(2.7)= 13.5
You just plug in 2.7 for x
Answer:
The angles are neither complementary nor supplementary