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
FinnZ [79.3K]
2 years ago
14

16. You found a shortcut to school that saves 5 minutes off of taking the freeway. About 1 in every 10 trips

Mathematics
1 answer:
kykrilka [37]2 years ago
6 0

Answer:

  it saves 2.5 minutes

Step-by-step explanation:

The expected value of a random variable is the sum of products of possibilities and the probability of each.

Here, you have a probability of 0.9 of saving 5 minutes, and a probability of 0.1 of adding 20 minutes.

__

The expected value of the shortcut is ...

  0.9(-5) +0.1(20) = -4.5 +2.0 = -2.5

The shortcut is expected to save 2.5 minutes on average.

_____

<em>Additional comment</em>

The probability of 0.9 comes from the 9 of 10 trips that result in a time saving.

You might be interested in
Please help Me Solve This Geometry Problem
frozen [14]

6h+5(h-5)= 52

Mutiply the bracket by 5

(5)(h)(5)(-5)= 5h-25

6h+5h-25= 52

move -25 to the other side

sign changes from -25 to +25

6h+5h-25+25= 52+25

6h+5h= 77

11h= 77

divide by 11

11h/11= 77/11

Cross out 11 and 11, divide by 11 and becomes 1*1*h= h

h= 7

Answer: h= 7

5 0
3 years ago
A bag of 100 tulip bulbs purchased from a nursery contains 40 red tulip​ bulbs, 20 yellow tulip​ bulbs, and 40 purple tulip bulb
deff fn [24]

A) 40 out of 100 are red.

The probability would be 40/100, which reduces to 2/5

B) 40 out of the 100 are purple.

 The probability would be 40/100, which reduces to 2/5

C) the two probabilities are the same.

7 0
3 years ago
. Bob sells planters at craft shows. At the first craft show, he sold one-fourth of his planters. At the next craft show, he sol
Mrac [35]
He sold 72 planters in total.
72/4= 18
18 is what he sold on the first day
14 on the second day
20 on the third day
20 on the fourth day.
8 0
3 years ago
Can I get some help?
Anon25 [30]

Answer:

Step-by-step explanation:

One angle is greater than 90°: Obtuse triangle

Two sides are the same length: Isosceles triangle

5 0
3 years ago
SHOW YOUR WORK. Algebra question. 100 POINTS. Easy
matrenka [14]

Answer:

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • How do i find points that divide a line segment into three parts
    10·1 answer
  • Distributive property simplify each expression <br><br> -3k + 5k
    9·1 answer
  • Here are the ingredients for raspberry ripple ice cream
    12·1 answer
  • Which of the following is equal to 7 &amp; 1/4?
    9·1 answer
  • Suppose that a red die and a green die are tossed and the numbers on the sides that face upward are observed. what is the probab
    11·1 answer
  • Reyna runs a textile company that manufactures T-shirts. The profit, p, made by the company is modeled by the function p=s^2+9s-
    7·2 answers
  • If a store advertised a sale that gave customers a 1/4 discount, what is the fractional part of the original price that the cust
    10·1 answer
  • Need help Pronto! Will give braintliest.
    12·1 answer
  • Help me please i will give brainliest.
    12·2 answers
  • Katy made muffins on 3 days. Each day she used 14 of a stick of butter to make the muffins.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!