Answer:
Step-by-step explanation:
Pooled proportion
The hypothesis null would be
Alternate can be either not equal to or < or > according to need
Std error for difference of proportions
Hence test statistic = p difference/std error
= 
where p is given as above as combined proportion.
Answer:
59
Step-by-step explanation:
Let c and b represent the scores of Colin and Brian respectively. Then
c + b = 59. Since brian scored 59 more points than Colin, that means c = 0 and b = 59. Their combined score is 0 + 59 = 59.
Answer:
y=1/3x-11
Step-by-step explanation:
Perpendicular to y=-3x
Get the negative reciprocal to find your new slope
1/3x is our new slope
y=mx+b
Plug coordinates in:
-2=-3(-3)+b
-2=9+b
b=-11
Answer:
$131.71
Step-by-step explanation:
Given:
Original price: $234.45
Markdown: 78%
---------------------------------------------------------------------------
Actual Selling Price: 131.71
Markdown: 102.74
-------------------------------------------------------------------------
Answer:
Step-by-step explanation:
24 has a lot of factors
1 2 3 4 6 8 12 and itself.
It is easy to talk about fraction of a day. Like work is 8 hours which is 1/3 of a day. So is sleep. So is recreation. The description of how long it would take to walk 4 miles is about 1 hour
23 is prime. It has no other number that could divide into parts of a day. There's 1 and there's 23 and that's all. How would you say 1/3 of a day and have it meaningful, particularly if you didn't know much about fractions?
25 is nearly as bad, but not quite. It does suffer from not being about to have parts of a day evenly described as 1/3 or a day or 1/6 of a day.
