Answer:
6.3
Step-by-step explanation:
Y+2=-3/4(x+1)
y+2=-3x/4 -3/4
y=-3x/4 - 3/4 - 2
y = -3x/4 - 3/4 - 8/4
y = -3x/4 - 11/4
Answer:
y equals three sevenths times x plus 3
Step-by-step explanation:
Given the information:
- points going up from about zero comma negative 3
<=> Let A (x1, y1) = (0, -3)
- to the right to about 7 comma zero
<=> Let B (x2, y2) = (7, 0)
As we know, the line of best fit is a linear equation that represent the data with the standard form:
y = mx + b where:
- m is the slope
- b is the the y-intercept when x = 0
For a line that goes trough the points (x1, y1) and (x2, y2), the slope is
m =
In this situation, we have:
m = =
=> y = x + b.
Because the line goes through A (0, 3)
=> 3 = *0 + b
<=> b =3
=> y = x + 3
So we choose y equals three sevenths times x plus 3
Answer:
-6.3 degrees
Step-by-step explanation:
First I formed the equation 10.4-16.7=x, which the answer came to be -6.3 degrees.
Answer:
a)
b) t=1.172
c) The null hypothesis failed to be rejected.
There is no enough evidence to claim that the mean tornado length is greater than 2.4 miles.
Step-by-step explanation:
<em>The question is incomplete:</em>
<em>The sample mean is 2.74 and the sample standard error is 0.29.</em>
We have to test the claim that the mean tornado length is greater than 2.4 miles.
The appropiate null and alternative hypothesis are:
As the population standard deviation is not known, the sample standard deviation is used as an estimation. The statistic is T-student instead of the z-value.
The degrees of freedom are
The P-value for this t-statistic is
At a significance level of 0.05, the P-value is greater, so the effect is not significant and the null hypothesis failed to be rejected.
There is no enough evidence to claim that the mean tornado length is greater than 2.4 miles.