A truck carries apples, grapes, and blackberries in the ratio of 4:3:4 if the apple weighs 160 pounds how much does the truckloa
1 answer:
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Answer:
There will be billion messages sent or received in November.
Step-by-step explanation:
Given.
Number of text messages sent or received billion.
Increment on the very next month
Lets find what is
⇒
⇒
So we will add this value to our previous months data.
Now
Number of text messages sent in the month of November billion.
Rounding to the nearest tenth the answer will be billion.
So billion text messages were sent or received in November.
Answer:
Mean = 35
Variance = 291.7
Step-by-step explanation:
Data provided in the question:
X : 1, 2, 3, 4, 5, 6
All the data are independent
Thus,
The mean for this case will be given as:
Mean, E[X] =
or
E[X] =
or
E[X] = 3.5
For 10 days, Mean = 3.5 × 10 = 35
And,
variance = E[X²] - ( E[X] )²
Now, for this case of independent value,
E[X²] =
or
E[X²] =
or
E[X²] =
or
E[X²] = 15.167
Therefore,
variance = E[X²] - ( E[X] )²
or
variance = 15.167 - 3.5²
or
Variance = 2.917
For 10 days = Variance × Days²
= 2.917 × 10²
= 291.7