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Fantom [35]
3 years ago
9

Your roommate Dave eats one of two things for breakfast each day. Eighty percent of the time he has eggs for breakfast, and twen

ty percent of the time he has stale bread. After eating his breakfast he walks to class and for each person he sees, he randomly chooses to either wave hello nicely or scowl angrily. If he eats eggs then each time he sees a person he has a 90% probability of waving hello nicely, and each time he sees a person he has a 10% probability of scowling angrily. If he eats stale bread, then each time he sees a person he has a 60% probability of waving hello nicely, and each time he sees a person he has a 40% probability of scowling angrily. Dave's Greeting probability for each person by breakfast choice Breakfast choice Greeting Eggs Stale bread Wave nicely 90% for each person he sees 10% Scowl angrily 60% 40% (a) Dave eats breakfast and walks to class. On his way he sees n people. Derive an expression in terms of n and k for the probability that he will scowl angrily at k people and wave nicely to n k people. In other words find the following conditional probability: P(Scowls at k|Sees n people) (b) Suppose Dave sees n people on his way to class, waves nicely to n-k and scowls at k. Derive an expression for the probability he ate stale bread for breakfast. In other words, find the following conditional probability: P(Stale bread Saw n people, scowled at k)
Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0

Answer:

9000 pounds 100%

Step-by-step explanation:

dave is fat

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GrogVix [38]
Maybe like 5 minutes because of how much it is turning in a minimum amount of time

6 0
3 years ago
If a + 1 = b, then b > a.
kogti [31]
If a=-10;then:
a+1=-10+1=-9=b
-9>-10

if a=10; then
a+1=10+1=11=b
11>10
A)The pair of values for a and be are: a=-10, then the value of b would be: -9;
And a=10; then the value of b would be:11;

B) It isn´t possible to create a pair of values for a and be, in wich the numerical relationship shown in the given conditional stament is false, therefore b>a if a+1=b
4 0
3 years ago
Read 2 more answers
If pentagon ABCDE is rotated 180 degrees around the origin to create pentagon A’ B’ C’ D’ E’, what is the ordered pair of point
Naddik [55]
You haven't provided the original coordinates or the figure, therefore, I cannot give an exact answer. However, I will help you with the concept.

For rotation 180° about the origin, the signs of both the x any y coordinates are changed.
<u>This can be modeled as follows:</u>
(x,y) ......> rotation 180° about the origin ........> (-x,-y)

<u>Examples:</u>
(1,2) .......> rotation 180° about the origin ........> (-1,-2)
(2,-19) ....> rotation 180° about the origin ........> (-2,19)
(-3,-8) .....> rotation 180° about the origin ........> (3,8)
(-5,7) ......> rotation 180° about the origin ........> (5,-7)

Based on the above, all you have to do to get the coordinates of C' is change the signs of both the x and y coordinates

Hope this helps :)

5 0
2 years ago
How many solutions does y-10 =2x have
Travka [436]
Y= 2x+10 would be the equation and it would have no solution because there's no value if x nor y
7 0
3 years ago
3k-2=10 whats the answer
kap26 [50]

Answer:

k = 4

Step-by-step explanation:

3k - 2 = 10

3k - 2 + 2 = 10 + 2     (adding 2 to both sides)

           3k = 12

        3k/3 = 12/3       (dividing both sides by 3)

             k = 4

Happy to help :)

4 0
2 years ago
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