1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
juin [17]
3 years ago
9

The video states that 78% of people carry less than $50 in cash; 40% carry less than $20 in cash, and 9% carry no cash. Suppose

you have a random sample of 100 people and you check how much cash each person is carrying. Assuming that the percentages stated in the video are correct for all adult Americans, discuss how it could occur that 12 people in your sample are carrying no cash while only 75 people in your sample are carrying less than $50 in cash.
Mathematics
1 answer:
Inessa05 [86]3 years ago
6 0

Answer:

The probability that 12 people in your sample are carrying no cash is 0.0712

Step-by-step explanation:

n = 100

p(no cash) = 0.09

x = 12

By applying binomial distribution

P(x,n) = nCx*px*(1-p)(n-x)

P(x = 12) = 0.074.

The probability that 12 people in your sample are carrying no cash is 0.074.

n = 100

p(less than 50) = 0.78

x = 75

By applying binomial distribution

P(x,n) = nCx*px*(1-p)(n-x)

P(x = 75) = 0.0712

The probability that 12 people in your sample are carrying no cash is 0.0712

You might be interested in
One side of a rectangle is 3 inches shorter than the other side, and the perimeter is 54 inches. What are the dimensions of the
vitfil [10]

Answer:

2x + 2(x - 3)

Step-by-step explanation:

4 0
3 years ago
A ski rental store rents a pair of skis for $44 a day and a snowboard for $58 a day. Yesterday, the store made $2,232 on ski and
Katen [24]

First, let the number of skis rented by x and the number of snowboards rented by y. We can then assemble the first equation from the amount of money made from the rentals.


44x + 58y = 2232


The second equation can come from the fact that 9 more skis were rented than snowboards.


y = x - 9


Therefore our system is:


44x + 58y = 2232

y = x - 9

3 0
3 years ago
State the slope and y intercept of the graph of 9-x=2y
jasenka [17]
The equation of a line is given by y = mx + c; where m is the slope.
The given equation is 9 - x = 2y
y = -1/2 x + 9/2
Therefore, the slope is -1/2 and the y-intercept is 9/2.


8 0
3 years ago
Twice x plus 5 is the same as -12
Anastasy [175]

Answer:

Step-by-step explanation:

2x+5=-12

2x=-17

x=-8.5

8 0
3 years ago
Read 2 more answers
A barrel was 2/3 full of water. After 60 liters were used from the barrel, it was 5/12 full. how much water does the barrel hold
Andrews [41]

Answer: 240 liters

Step-by-step explanation: This means, we start off with (2/3)x liters of water. Then we subtract off 60 of them to get to 5/12 full, meaning we have (5/12)x liters left.

7 0
2 years ago
Other questions:
  • Lakisha has a total of $8000 to invest in two accounts for 1 year. One pays 5% simple interest, and the other pays 6% simple int
    8·2 answers
  • Which expression has a value of 36? 3/7X42. 6/7X21. 3/4X48 10/13X39
    13·1 answer
  • Which graph shows the solution set for Negative five-halves x minus 3 less-than-or-equal-to 2?
    13·2 answers
  • Tirzah wants to put a fence around her garden. She has 22 yards of fence material. Does she have enough to go all the way around
    8·1 answer
  • Dennis takes care of private swimming pools. He charges $35 to travel to a home and then $40 per hour. The equation t = 35 + 40h
    5·1 answer
  • Base 5<br> 3213<br> 3444<br> + 3323
    10·1 answer
  • write an equation of the line that passes through the given point is a parallel and B perpendicular to the given line (4,3)​
    8·1 answer
  • I need help pls this test is really hard
    11·1 answer
  • Can someone help with 6,7,8,9?
    9·1 answer
  • What is 12x + 24y in Distributive Property? :)<br><br> −
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!