Ten people who visited the vet were asked how many dogs and cats they owned. The results are shown in the table.
2 answers:
Answer:
See below
Step-by-step explanation:
A scatter plot uses dots to represent the values obtained for two different variables — one plotted along the x-axis and the other plotted along the y-axis.
I have recreated your data below.
Your variables are the numbers of cats and the numbers of dogs.
I plotted the number of cats along the y-axis to see if the number of cats depends on the number of dogs.
In the plot, the data are so scattered that there is no apparent relation between the number of cats and the number of dogs.
You can draw a straight line between the points, but they are so scattered that you can say there is no correlation between the variables.
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Answer:
Step-by-step explanation:
The equation represents the discriminant of a quadratic. It is the part taken from under the radical in the quadratic formula.
For any quadratic:
- If the discriminant is positive, or greater than 0, the quadratic has two solutions
- If the discriminant is equal to 0, the quadratic has one distinct real solution (the solution is repeated).
- If the discriminant is negative, or less than 0, the quadratic has zero solutions
In the graph, we see that the equation intersects the x-axis at two distinct points. Therefore, the quadratic has two solutions and the discriminant must be positive. Thus, we have .
Answer:
Step-by-step explanation:
find the attachment showing std normal curve symmetrical about y axis.
Equal probabilities on either side of the mean thus the total probability to the right of mean is 0.50
From the table we can find that
a) P(Z>2.5) = 0.5- area lying between 0 and 2.5
= 0.5-0.4938 =0.0062
b) P(1.2<z<2.2) = F(2.2)-F(1.2)
= 0.9861-0.3849
=0.6012
