A) The population and sample mean are always the same ... in this case, it is 20.6 minutes.
<span>b) First convert the data to z-values: </span>
<span>P(X<18) = P(z < (18-20.6)/8.4) = P(z< -0.3095) </span>
<span>Now, using a Standard Normal table, look up z= -0.3095 </span>
<span>P(X<18) = 0.3785 </span>
<span>Hope that helps</span>
Answer: Option A)
is the correct expansion.
Explanation:
on applying binomial theorem, 
Here a=3c,
and n=6,
Thus, 
⇒ 
⇒
⇒
⇒
Answer:
StartFraction 8 Over 25
Step-by-step explanation:
What is the product of StartFraction 4 Over 5 EndFraction times two-fifths?
Mathematically =
StartFraction 4 Over 5 EndFraction = 4/5
Two- fifths = 2/5
Hence,
The product of StartFraction 4 Over 5 EndFraction times two-fifths
= 4/5 × 2/5
= 8/25
The correct option =
StartFraction 8 Over 25 EndFraction
Answer:
D
Step-by-step explanation:
The answer is D the median is 1.5 and the mean is greater