Answer & Step-by-step explanation:
We will only get a tornado if there is already a thunderstorm materializing
0.80 * 0.14 = 0.112
Probability of a tornado = 11.2%
There is a 100 - 14 = 86% chance of a tornado not being produced.
0.80 * 0.86 = 0.688
Probability of a storm and no tornado = 68.8%
The correct option is b. No, it is not a rectangle because the sides of the parallelogram do not meet at right angles.
<h3>How to explain the information?</h3>
The figure is a parallelogram and one diagonal measure 28 units.
In this case, it is not a rectangle because the sides of the parallelogram do not meet at right angles.
Therefore, the correct option is B.
Learn more about rectangles on:
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Answer:
0.6865
Step-by-step explanation:
test statistic is given by the formula
test statistic =
where = mean of the sample
μ= mean
n= sample space
σ= standard deviation
we have given mean of sample =69
mean μ=68.3
σ=11.4
sample space=125
putting all these value in formula of test statistic
test statistic=
=0.6865
9514 1404 393
Answer:
n² -n +1
Step-by-step explanation:
First differences of the terms of the sequence are ...
3-1 = 2
7-3 = 4
13-7 = 6
21-13 = 8
Second differences are ...
4-2 = 2
6-4 = 2
8-6 = 2
In a quadratic sequence the coefficient of the squared term is half of the second difference value. Here, that means the squared term will be (2/2)n² = n².
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We can find the other terms of the quadratic expression by considering the differences between n² and the actual sequence.
The sequence of n² terms is ...
1, 4, 9, 16, 25
When we subtract these from the actual sequence, we get ...
1-1 = 0
3-4 = -1
7-9 = -2
13-16 = -3
21-25 = -4
That is, the amount subtracted from n² is one less than the term number.
The expression for the n-th term is ...
an = n² -n +1