menu
bartleby
search
close search
Hit Return to see all results

In a shipment of 15 room air conditioners , there are 3 with defective thermostat. Two air conditioners will be selected at random and inspected. Find the probability thatA) the first is defectiveB) both are defectiveC) exactly one is defective.

Question

In a shipment of 15 room air conditioners , there are 3 with defective thermostat. Two air conditioners will be selected at random and inspected. Find the probability that
A) the first is defective
B) both are defective
C) exactly one is defective.

check_circleAnswer
Step 1

Given that there are 15 room air conditioners.

Defective thermostats = 3

Two airconditioners are selected at random.

We need to find probability that first is defective.

Probability of first one is defective = total number of defective thermostat/total air conditioners.

Probability that first one is defective = 3/15 = 1/5=0.2

Step 2

Probability that first one is defective = 1/5 or 0.2

Given that first one is defective there are 2 defective thermostat left and total of 14 air conditioners left. So probability of drawing second thermostat defective = 2/14.

So probability ...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Math

Statistics

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took th...

A: Given data of glucose reading for 8 weeks92 87 82 107 99 109 85 89The sample x-bar is 93.8 . x is no...

question_answer

Q: The Orchard Cafe has found that about 10% of the diners who make reservations don't show up. If 86 r...

A: The aim is to find the mean, µ, and standard deviation, σ of the binomial distribution.

question_answer

Q: Avarege GPA questions. Data  include.

A: Note: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not me...

question_answer

Q: In a fishing logde brochure, the lodge advertises that 75% of its guest catch northern pike over 20 ...

A: The provided information are:

question_answer

Q: BASED ON THIS DATA, what does the r^2 values tell you? and the linear regression line  is the inform...

A: Note:Hi there! Thank you for posting the question! However, the circumstances of the study presented...

question_answer

Q: Suppose you would like to estimate, with 97% confidence, the proportion of computers that need repai...

A: It is given that the level of confidence is 97% and desired margin of error E is 0.035.The formula f...

question_answer

Q: Hi. How do you calculate this Poisson Distribution in the TI-83? Thanks.

A: Let ‘Y’ be the waiting time between two busses which follows exponential distribution with mean wait...

question_answer

Q: Select the statistic test that best fits each description. Study exploring the relationship between ...

A: Introduction:A brief introduction to the various tests suggested here is given below:T-test independ...

question_answer

Q: A person with a cough is a persona non grata on airplanes, elevators, or at the theater. In theaters...

A: Given that in any large audience you will hear that 15 coughs per minute. r is the number of coughs ...

Sorry about that. What wasn’t helpful?