Given:
The table and the relative frequency histogram show the distribution of the number of tails and three coins are tossed.
To find:
The probability .
Solution:
In the given table T represents the number of tails.
From the given table it is clear that the value of probability is and . So,
Therefore, the probability is equal to .
Answer:
If the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 15
Standard Deviation, σ = 1
Sample size = 4
Total lifetime of 4 batteries = 40 hours
We are given that the distribution of lifetime is a bell shaped distribution that is a normal distribution.
Formula:
Standard error due to sampling:
We have to find the value of x such that the probability is 0.05
P(X > x) = 0.05
Calculation the value from standard normal z table, we have,
Hence, if the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.
Answer:
18x-7y
can you also please mark me as brainliest?
<span>it's right
-2y= -6x+12
-2y= -2 (3x-6) |</span>÷ (-2)
y= 3x-6
<span>the answer youre looking for is 56.55 inches
</span>