Answer:
262.5 minutes or 4.375 hours
Step-by-step explanation:
7/8=0.875
60 minutes=1 hours
5 is the amount Karen played
7/8 of 60 minutes will be 52.5 minutes since 0.875*60=52.5
52.5*5=262.5 minutes
262.5/60=4.375 hours
8(4x+9)= 32x+72
Step-by-step explanation:
You distribute the 8 to the 4x and vet 32x and then you distribute the 8 to the 9 and get 72
Answer:
2 and 4
Step-by-step explanation:
Answer:
The answer is in the explanation
Step-by-step explanation:
Mean value = = 438
(a) The data appeared to be centered towards 438.
There are little or no skew.
There is no outliers.
(b) yes
(c) standard deviation = s = 14.8955
95% confidence interval =
=
= (430.3415, 445.6585)
(d) Test statistic
t =
t = -3.3216
p -value is correctly given in option b.
No, 450 is not a plausible valaue.