Answer:
since 20% is 100
then 80% is 400
Therefore 500 in total to begin with.
39 and hour because 234/6 = 39
Answer:
C and C
Step-by-step explanation:
1) (5P + 9)/10 (C)
2) 2 times N plus 1 (C)
Answer:

Step-by-step explanation:
Given
Low Temperature : 40−44 || 45−49 || 50−54 || 55−59 || 60−64
Frequency: --------------- 3 -----------6----------- 1-----------3--- -----7
Required
Determine the mean
The first step is to determine the midpoints of the given temperatures
40 - 44:



45 - 49



50 - 54:



55- 59



60 - 64:



So, the new frequency table is as thus:
Low Temperature : 42 || 47 || 52 || 57 || 62
Frequency: ----------- 3 --||- -6-||- 1-||- --3- ||--7
Next, is to calculate mean by




<em>The computed mean is greater than the actual mean </em>