Answer:
48 more dollars
Step-by-step explanation:
First make 60% into a decimal (.6) and multiply it by 120 which should give you 72. Then subtract 72 from 120 and that should give your difference which is 48.
Answer:
melting and freezing
Step-by-step explanation:
Answer: (751.05, 766.95)
Step-by-step explanation:
We know that the confidence interval for population mean is given by :-
,
where =population standard deviation.
= sample mean
n= sample size
z* = Two-tailed critical z-value.
Given :
n= 42
We know that from z-table , the two-tailed critical value for 99% confidence interval : z* =2.576
Now, the 99% confidence interval around the true population mean viscosity :-
∴ A 99% confidence interval around the true population mean viscosity : (751.05, 766.95)
the answer would be B.
u have to simplify the first fraction by getting rid of the 4.(divide numerator and denominator by 4) and then multiply the fractions.
Hope this helps:)