Answer: (7.27%, 7.55%)
Step-by-step explanation:
As per given , we have
Sample size : n= 392
Sample mean : 

Critical two-tailed z-value for 95% confidence = 
Required confidence interval would be :

Hence, the required 95% confidence interval for the mean percentage share of billing volume from network television for the population of all U.S. advertising agencies : (7.27%, 7.55%)
Answer:
https://jbarrueta.weebly.com/uploads/5/3/2/9/53297595/lesson2.2.2.pdf
Step-by-step explanation:
here's a link
Answer:
1st one: -24a-6b-36c
2nd one: 14mn-12m
Step-by-step explanation:
1st one: Multiply '-6' w/ '4a', 'b', and '6c'
2nd one: Multiply '2m' w/ '7n' and '-6'
Answer:
170 cm
Step-by-step explanation:
160+.06*160=160+9.6=169.6
Answer:
C
Step-by-step explanation: