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.

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Related Statistics Q&A

Find answers to questions asked by students like you.

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...

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.

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...

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

A: The provided information are:

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...

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...

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...

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...

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 ...

Q: Test the hypotheses of Ho: sigma is equal to 0.56 versus Ha: sigma not equal to 0.56 using a 5% sign...

A: According to the given question, to test the hypothesis of H0: sigma is equal to 0.56 versus Ha: sig...

Q: An office has three smoke detectors. In case of fire, each detector has probability 0.9 of detecting...

A: Probability of at least one event occurring:It is given that there are three smoke detectors and eac...

Q: Do most researchers still insist on at least interval level of measurement as a condition for the us...

A: Solution:In Interval scale, the difference between two values are standardized and equal. Most stati...

Q: How many ways can a dinner patron select 3 appetizers and 2 vegetables if there are 6 appetizers and...

A: Total number of available appetizers = 6Number of appetizers to be selected = 3Total number of avail...

Q: A manufacturer of a certain type of hardware has two manufacturing facilities and wants to compare t...

A: Conditions:The conditions for the two proportion test for sample sizes n1 and n2 with sample proport...

Q: The land area of th estate of Texas is about 261,797 square miles. If in mid-2016 all the world's pe...

A: The land area of Texas is about 261,797 square miles.Total number of people in world is 7.4 billion....

Q: Suppose that you want to do statitical significance tests for fourcorrelations and you want your EWa...

A: According to the provided information, it is required to conduct statistical tests for four correlat...

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98...

A: According to the empirical rule, in the standard normal curve, approximately 68% of the area is with...

Q: Natasha is a physician looking to determine whether a supplement is effective in helping men lose we...

A: According to the given question, Natasha is a physician looking to determine whether a supplement is...

Q: Number 15 A B C D

A: Note:Thank you for the question. However, your question has more than 3 parts. We are solving first ...

Q: The number of unhealthy days based on the AQI ( Air Quality Index) for a random sample of metropolit...

A: Confidence interval:The (1-α) % confidence interval for population mean µ, when σ is unknown is give...

Q: How much money do winners go home with from the television quiz show Jeopardy? To determine an answe...

A: Solution:Confidence interval formula:Confidence interval = sample statistic ± margin of errorWhere, ...

Q: Suppose x has a distribution with μ = 60 and σ = 17. (a) If random samples of size n = 16 are select...

A: Note:Hi there! Thank you for posting the question. The Part (b) of your question asks about the “x d...

Q: Fuming because you are stuck in traffic? Roadway congestion is a costly item, both in time wasted an...

A: Hey, since there are multiple subpart questions posted, we will answer first three subparts. If you ...

Q: High in the Rocky Mountains, a biology research team has drained a lake to get rid of all fish. Afte...

A: The proportion of tagged trout in the lake is, p = 700/2000 = 0.35Let X be the number of tagged trou...

Q: Q5. You are considering two investment choices: a. 1 year CD that pays 2% for sure; b. investing in ...

A: Portfolio Mean and SDI am answering all the sub-partsQ5. You are considering two investment choices:...

Q: I asked this question before, and got an answer, but I have a question about the response that was g...

A: The formula that you shared from the text book is used for time-value-of-money calculations. Such a ...

Q: A researcher obtains hamstring measurements from a group of classmates. She then classifies those me...

A: Accordingt o the given question;A researcher obtains hamstring measurements from a group of classmat...

Q: It is thought that basketball teams that make too many fouls in a game tend to lose the game even if...

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you. ...

Q: If X(n,p) is a binomial random variable with parameters n and p, then why is it that X(n+1,p) stocha...

A: Both random variables have common probability space, we can clearly say that the expected value of X...

Q: Question B

A: B)The variables whose level are set by the experimenter is the independent variable, which is called...

Q: The president of Doerman Distributors, Inc., believes that 27% of the firm's orders come from first-...

A: In this question, it has been given that president of Doerman distributors believes 27% of the its f...

Q: 3.It is thought that basketball teams that make too many fouls in a game tend to lose the game even ...

A: (a) The value of coefficient of determination:The given data is represented in the following table:

Q: The same media consultants decided to continue their investigation of the focal relationship between...

A: Note:Hey there! Thank you for posting the question. On reading the question, it appears that the fir...

Q: Consider a sample of 54 football games, where 28 of them were won by the home team. Use a 0.05 signi...

A: Test statistic calculation:The probability that the number of home team wins will be greater than on...

Q: Find the critical value zc necessary to form a confidence interval at the level of confidence shown ...

A: It is required to find the z-critical value to form a 95% confidence interval. The critical value us...

Q: Leah Peschel is the bottling department manager for a bottling company that produces various soft dr...

A: GivenNull hypothesis H0:  µ1 = µ2Alternative hypothesis Ha :  µ1 ≠ µ2Sample mean number of cola bott...

Q: Hi. How do you arrive at an answer using the TI-83? Thanks.

A: Solution:99% confidence interval for the slope of the regression line is calculated using EXCEL.The ...

Q: Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). T...

A: Confidence interval when population standard deviation is not known:The formula of confidence interv...

Q: A researcher wants to investigate whether mindfulness training improves ability for employees to not...

A: A dependent variable is a variable which is being tested and measured in any scientific experiment. 

Q: How do you determine the mean annual return?

A: The mean of any given data is nothing but the average of the data.Let X1, X2 , X ,....., Xn are n da...

Q: Using the accompanying table of data, blood platelet counts of women have a bell-shaped distribution...

A: In this question, it has been given that blood platelet counts of women have bell shaped distributio...

Q: How do I find A’ , Is It B,D and F ?

A: Given U = {a,b,c,d,e,f,g}A = {a,c,e,g}B = {a,b,c,d}A' is nothing but compliment of the set A which h...

Q: 1. In a random sample of 15 CD players brought in form repair, the average repair cost was $80 and t...

A: It is given that the average repair cost (mean) is $80, sample standard deviation s is $14, the samp...

Q: Returning to a possible class quiz, Sue believes there will be a quiz and offers 3:2 odds, Adam does...

A: Let betting  x amount with Sue  and y amount with AdamInvestment equation is shown in eq 1Formula fo...

Q: Select the statistic test that best fits each description. Comparison of mean reading test scores by...

A: Introduction to one-way ANOVA:One-way ANOVA is a statistical method for testing hypotheses regarding...

Q: An epidemiologist found five cases of “big toe cancer” in the Yukon Territory. Because there were on...

A: Note: Since we are authorized to answer only up to 3 subparts, we are answering first three subparts...

Q: When a researcher rejects a null hypothesis and he should have reject it what can of error has resea...

A: Hypothesis:Hypothesis is an assumption about the parameter of the population which will be made on t...

Q: In a study of minimizing tractor skidding distances along a new road in a European forest, the skidd...

A: Here, the sample size (n) is 20.The mean and standard deviation of the sample data is calculated bel...

Q: I am working on constructing a histogram for some data for the 39 US national parks under 900,000 ac...

A: According to the given data41 ,66 ,233 ,775 ,169, 36 ,338 ,233 ,236, 64,183 ,61 ,13 ,308 ,77,520, 77...

Q: Let x be the age of a licensed driver in years. Let y be the percentage of all fatal accidents (for ...

A: (c)Equation of the least squares regression line:The given data is represented in the following tabl...