ANSWER:
Whenever p is not the same as 0.5
(Whenever p is different from 0.5)
Step-by-step Explanation:
Recall that the sample size needed will be at it's maximum when p is equal to 0.5.
Therefore, if p is equal to 0.5, i.e p=0.5 The sample size formula will yield the required sample size but whenever p is different from 0.5, using p=0.5 The sample size formula will yield a sample size larger than required to construct a confidence interval for p with a specified bound and a specified confidence level.
Answer: 2.4
Step-by-step explanation:
KE=1/2MV^2 where M=2000 kg and V=5 m/s .5(2000)*(5^2)=25000 J
Answer:
the second option is the correct answer
Answer:
5
Step-by-step explanation:
→ Let x = √20 + √20 .....
x
→ Square both sides
x² = 20 + √20 +√20 + √20
→ Replace √20 +√20 + √20 with x
x² = 20 + x
→ Move everything to the left hand side
x² - 20 - x = 0
→ Factorise
( x + 4 ) ( x - 5 )
→ Solve
x = -4 , 5
→ Discard negative result
x = 5