Answer:
number 5= 2
Step-by-step explanation:
Answer:
460 ft^2 of carpet will be replaced
Step-by-step explanation:
You need to find the area of the room and then take away the area of the six bookcases
<u>Area of the room</u>
20*20=400ft^2
35-20=15ft
(15*20)/2=150ft^2
400+150=550ft^2 total room area
<u>Area of bookcases</u>
2.5*6*6=90ft^2 total bookcase area
<u>room area - bookcase area = carpet area</u>
550-90=460ft^2
Answer:
(3138.29, 3705.11)
Step-by-step explanation:
Given that for sample size of n = 50 male athletes from eight Canadian sport centers surveyed, the average caloric intake was 3077.0 kilocalories/day with a sample standard deviation of 987.0.
The recommended amount = 3421.70
To construct 95% confidence interval
Since population std deviation is not known we use t critical value for degree of freedom 50-1 =49
t critical = 2.010
Hence margin of error = 
Confidence interval lower bound = 
Confidence interval upper bound = 
Conf interval = 
Yes because it is a 90 degree angle which is a right angle