1. Statistical because there is more than one acceptable answer. There could have been any number.
3. Statistical because one middle school may be ( no offense ) average but spend little time on the internet. Another may spend hours.
I hope this helps. For 3 I may be wrong but…
We can set up a proportion to solve this. 9 lions were tagged out of a sample of 50. This gives us the ratio 9/50 for the first part of the proportion.
For the second ratio, we know 85 lions were tagged out of an unknown population; this gives us 85/x.
Our proportion is
9/50 = 85/x
Cross multiply:
9*x = 50*85
9x = 4250
Divide both sides by 9:
9x/9 = 4250/9
x = 472.222
To the nearest whole number, this is 472 sea lions.
Step-by-step explanation:
We can set up a proportion to solve this. 9 lions were tagged out of a sample of 50. This gives us the ratio 9/50 for the first part of the proportion.
For the second ratio, we know 85 lions were tagged out of an unknown population; this gives us 85/x.
Our proportion is
9/50 = 85/x
Cross multiply:
9*x = 50*85
9x = 4250
Divide both sides by 9:
9x/9 = 4250/9
x = 472.222
To the nearest whole number, this is 472 sea lions.
Answer:
Step-by-step explanation:
Let X be the no of adults whose feelings the state of morals is poor.
X has two outcomes and each trial is independent of the other
X is Bin with p = probability for success in each trial =40%=0.40
n=no of adults surveyed = 55
a) The probability that exactly 21 of those surveyed feel the state of morals is poor is
(b) The probability that no more than 22 of those surveyed feel that state of morals is poor is
=
(c) The probability that more than22 of those surveyed feel the state of morals is poor is
(d) The probability that 15 or 16 believe the state of morals is poor is
=
There are all parallelograms.
To find their area we need to use only one formula.
A=base*height
Everything is given, so
1) A=b*h=5.3*4=21.2 km²
2) A=b*h= 11*10.7= 117.7 mi²
3) A=b*h= 10.5*7.9 =82.95 mi²