I’m not 100% sure but I believe it’s 6
Answer:
Any value greater than -9 and less than -3
Step-by-step explanation:
Explained and uploaded
11:10am
20 minutes before 12 noon is 11:40am
30 minutes before 11:40am is 11:10am
Answer:
atleast 385
Step-by-step explanation:
Given that an electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricity, they would like know the mean daily power usage for homes there.
Population std deviation = 
Sample size =
STd error of sample mean = 
Margin of error for 95% would be Critical value ( std error)
Here since population std dev is known we can use Z critical value= 1.96

Sample size should be atleast 385