Answer:
1) The probability that the mean mpg for a random sample of 25 light vehicles is 0.042341.
2) between 20 and 25 --> 21-25/2.9 = -1.38
Step-by-step explanation:
Problem #1:
- Using the z-score formula, z = (x-μ)/σ/n, where x is the raw score = 20 mpg,μ is the population mean = 21 mpg , σ is the population standard deviation = 2.9, n = random number of samples.
<h3><u>X < 20</u></h3>
- = z = 20 - 21/2.9/√25
- = z = -1/2.9/5
- = z = -1.72414
<h2><u><em>Now</em></u></h2>
<em>P-value from Z-Table:</em>
<h3><u>P(x<20) = 0.042341</u></h3>
Problem #2:
<h3>21-25/2.9 = -1.38</h3>
<h3>
Answer: D) 4</h3>
Explanation:
Start at the point (-1,-4). In order to move to (0,0), we must do the following two steps:
- Move 4 units up
- Move 1 unit to the right
This indicates slope = rise/run = 4/1 = 4.
You could use the slope formula to get this same result.
Answer:
This equation is invalid, the left and right sides are not equal, therefore there is no solution.
Step-by-step explanation:
It's no going to be the exact number, it's 0.33, just divide 1/3 :) hope it helps you
Answer:
The true congruence statement is CW ≅ MQ ⇒ 2nd answer
Step-by-step explanation:
All the radii in the circle are congruent
From the attached figure
In circle B
∵ W, C, Q, and M lie on the edge of the circle
∴ BW, BC, BQ, and BM are radii
∵ All the radii in the circle are congruent
∴ BW ≅ BC ≅ BQ ≅ BM
∵ CW ≅ MQ ⇒ Given
∴ The true congruence statement is CW ≅ MQ
