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
katrin2010 [14]
3 years ago
5

Michael has a bus rental agency. He has 18 buses available, of which 8 have air conditioning (A.C.). What is the probability tha

t a randomly selected vehicle will be an A.C bus? 50% 2/3 4/9 30%

Mathematics
2 answers:
Inessa05 [86]3 years ago
8 0

Answer:

4 / 9

Step-by-step explanation:

Solution:-

- Michael bus rental agency has a total of n = 18 buses.

- Out all the available buses he has r = 8 buses with AC in them.

- If we were to randomly select a bus from his agency what is the probability that the bus would have an AC:

           P ( Bus with AC ) = Favorable Outcomes / Total outcomes

                                        = Number of bus with AC / Total Buses

                                        = r / n

                                        = 8 / 18

                                        = 4 / 9

ankoles [38]3 years ago
3 0

Answer:

4/9

Step-by-step explanation:

Please refer to the attached image for explanations

You might be interested in
The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.895 g and a standard deviation
kvasek [131]

Answer:

3.67% probability of randomly seleting 37 cigarettes with a mean of 0.809 g or less.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question, we have that:

\mu = 0.895, \sigma = 0.292, n = 37, s = \frac{0.292}{\sqrt{37}} = 0.048

Find the probability of randomly seleting 37 cigarettes with a mean of 0.809 g or less.

This is the pvalue of Z when X = 0.809.

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{0.809 - 0.895}{0.048}

Z = -1.79

Z = -1.79 has a pvalue of 0.0367

3.67% probability of randomly seleting 37 cigarettes with a mean of 0.809 g or less.

5 0
2 years ago
If the cost of manufacturing mobile phones is $10,000 for the factorytime plus $80 per phone and that each
ozzi

Answer:

500 phones

Step-by-step explanation:

cost of manufacturing: y = 80x + 10,000

money from phone sales: y = 100x

* note: x = #phones

solve for when they're equal;

100x = 80x + 10,000

100x - 80x = 80x - 80x + 10,000

20x = 10,000      –––––––––––> divide both sides by 20

x = 500

5 0
2 years ago
Triangles are worth 3 points. Quadrilaterals are worth 4 points. Parallelograms are worth 5 points. Each student identifies and
timurjin [86]

Answer:

I agree on janice because if is reliable and brilliant,she can score more than that

3 0
2 years ago
PLEASE ANSWER PLEASEE!!!!!!!
Montano1993 [528]

Answer:

they would both be 61°

Step-by-step explanation:

when the angles make out a straight line it equals to 180 and 180 subtracted to 119 comes out to 61 and both b and c are vertical angles which would make them congruent

4 0
2 years ago
Read 2 more answers
Solve for f (-3) for f (x) = 1 -x<br> f (-3) = [ ? ]
Lostsunrise [7]
F(x) = 1 - x
f(-3) = 1 - (-3)
f(-3) = 4
3 0
3 years ago
Read 2 more answers
Other questions:
  • Art galleries often price paintings by the square inch. If a painting measures 22.5 inches b 34 inches and cost $4.15 per square
    11·1 answer
  • You are driving along the coast at 45 mph. How many minutes should it take you to get to Ventura?
    8·1 answer
  • 39.6 x 5.20 show your work traditional method
    15·1 answer
  • -3x+11=4x+2-(2x-4)<br><br> Please solve this problem with work. <br> Thanks!
    15·2 answers
  • Various problems with data collection can cause some observations to be missing. Suppose a data set has 20 cases. Here are the v
    10·1 answer
  • What would the answer be?
    13·1 answer
  • What is the completely factored form of d^4 - 81
    13·2 answers
  • Can you conclude that these triangles are congruent?<br><br> yes or no?
    14·1 answer
  • PLEASE HELP ILL GIVE BRAINLIEST!!!!
    10·2 answers
  • A concession stand uses 1/48 of a package of lemonade mix to make 1/6 gallons of lemonade.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!