Answer: 
Step-by-step explanation:
Given
Sample of 12 measurements has a mean of 16.5 and
a sample of 15 measurements has a mean of 18.6
Take
be the mean and no of measurements
and
be the mean and no of measurements in second case

Similarly,

Mean of 27 measurements

Answer:
The answer is "
".
Step-by-step explanation:
Although the five first players are red, the very first five cards are not spaded as the spad is a black card.
Its chance of the final card mostly on deck being the ace of spades is therefore determined as:

Thus,
here is the necessary chance.
<span>The value 28 should have been rounded to 2×101
</span>
Answer:
Is that it? I'll answer the questions the best i can
Step-by-step explanation:
Answer:
b. 284
Step-by-step explanation:
hope this helps