Answer: D
I just took the test and the answer is D.
Answer:
Step-by-step explanation:
Flat rate is the y- intercept b = 11.2
Charge per mile is the slope m = 3.1
<u>The equation is:</u>
<span>Probability = 0.063
Fourth try = 0.0973
Let X be the number of failed attempts at passing the test before the student passes. This
is a negative binomial or geometric variable with x â {0, 1, 2, 3, . . .}, p = P(success) = 0.7
and the number of successes to to observe r = 1. Thus the pmf is nb(x; 1, p) = (1 â’ p)
xp.
The probability P that the student passes on the third try means that there were x = 2
failed attempts or P = nb(2, ; 1, .7) = (.3)2
(.7) = 0.063 . The probability that the student
passes before the third try is that there were two or fewer failed attmpts, so P = P(X ≤
2) = nb(0, ; 1, .7) + nb(1, ; 1, .7) + nb(2, ; 1, .7) = (.3)0
(.7) + (.3)1
(.7) + (.3)2
(.7) = 0.973 .</span>
I am not sure if you have any choices. Here are some options:
0.17333333333
This is also notated by .1733 with a line over the top of the two 3's indicating that these number continue repeating.
Other choices depending on your instructions...
.173 (if rounded to thousanths)
.17 (if rounded to hundreths)
.2 (if rounded to tenths)
Answer:
224 cubes
Step-by-step explanation:
1. Find the area: 2 * 1 *7/4 = <em>7/2 cm³</em>
2. Find how many cubes fit into 1 cm³: 4 * 4 * 4 = <em>64 cubes</em>.
3. Multiply the two numbers: 7/2 * 64 = 224 cubes.
