Find the probability that a randomly selected student was female given that the student earned a grade of 'A.

Q: Suppose that the number of bacteria in a pond of water has an average rate of 24 bacteria per 8…

A: Given that, there are 24 bacteria per 8 mm3  This means per 1 mm3 , there are 24/8=3 bacterias.…

Q: If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was…

A: Given:   Pedestrian intoxicated Driver intoxicated Yes No Yes 46 66 No 270 599

Q: A batch of bulbs have a mean life of 1000 hours. Only one bulb is used at a time, and after each…

A: See the handwritten solution

Q: According to a recent survey, 80% of all teenagers own a smartphone. If we select 10 teenagers at…

A:

Q: If one of the pedestrian deaths is randomly selected, find the probability that the driver was not…

A: Solution: The given data is

Q: The normal rate of infection of a certain disease in animals is known to be 25%. In an experiment…

A:

Q: A certain disease has an incidence rate of 0.1%. If the false negative rate is 7% and the false…

A:

Q: The probability that a student in driving lesson will pass the written test for a non professional…

A:

Q: If one of the pedestrian deaths is randomly selected, find the probability that the driver was not…

A: Given that Total number of pedestrian deaths = 989 Number of deaths with driver was not intoxicated…

Q: The time required to repair a machine is an exponentially distributed random variable with mean of…

A: Given: λ=0.5

Q: A certain disease has an incidence rate of 0.2%. If the false negative rate is 4% and the false…

A:

Q: If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was…

A: Here complete the contingency table and answer the question using basic rule of probability

Q: If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was…

A: It is given that Number of pedestrian who are not intoxicated = 651 Total = 979

Q: A die is rolled four times. What is the probability of obtaining only even numbers given that the…

A:

Q: A recent study of robberies for a certain geographic region showed an average of 1 robbery per 18717…

A: From the provided information, The study showed an average of 1 robbery per 18717 people. And there…

Q: A certain disease has an incidence rate of 0.1%. If the false negative rate is 7% and the false…

A: Let us define some events A : a person has the disease. B : a person does not have the disease. E :…

Q: Use the normal approximation to estimate the probability of getting exactly 48 girls in 100 births.…

A: Given: The sample size of births is n=100. The probability of birth of a girl is p=0.5. For Binomial…

Q: suppose a jar contains 5 red marbles and 35 blue marbles. If you reach in the jar and pull out 2…

A: Introduction: According to the combination rule, if r distinct items are to be chosen from n items…

Q: The probability of a student who wants to become a pilot to pass the written exam for private pilot…

A: We have to find given probability.

Q: Suppose a jar contains 12 red marbles and 35 blue marbles. If you reach in the jar and pull out 2…

A:

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: Find the probability that at least 5 heads show up when a fair coin is tossed 7 times. Round your…

A: Givenprobability of getting head =12=0.5n=7Let "x" be getting…

Q: The probability that a certain radioactive mass emits no particles in a one-minute time period is…

A: The Poisson distribution formula is,

Q: The time between arrivals of vehicles at particular intersection follows an exponential probability…

A: Given: Time between arrivals of vehicles at particular intersection follows an exponential…

Q: A certain disease has an incidence rate of 0.6%. If the false negative rate is 4% and the false…

A: we have to find given probability.

Q: A geneticist conducts an experiment with peas, one sample of offspring consisted of 462 green peas…

A: From the given information, A geneticist conducts an experiment with peas, one sample of offspring…

Q: The normal rate of infection of a certain disease with the children is found to be 20%. In an…

A:

Q: If one of the trials is randomly chosen, find the probability that it lasted more than 27 days.…

A: Suppose that the duration of a particular type of criminal trial is known to be normally distributed…

Q: The average time between arrivals of movie theatre customers is 4 minutes. Assuming an exponential…

A:

Q: The proportion of individuals that regularly smoke in a population is known to be 0.25. What is the…

A: Given information: p=0.25 Sample size, n=100

Q: Determine the probability of 3 out of 5 people getting accepted into a graduate program, where the…

A: The question is about prob. dist. Given : Total no. of people ( n ) = 5 Prob. of selecting single…

Q: According to a recent survey, 38% of Americans get enough sleep each night. If 8 people are…

A: Given p=38%=0.38 and n=8. Let X be the number of Americans who get enough sleep each night. Here, X…

Q: The mean number of customers arriving at a bank during a 15-minute period is 10. Find the…

A: Suppose random variable X defines the number of customers arriving at a bank during a 15-minute…

Q: A certain disease has an incidence rate of 0.8%. If the false negative rate is 8% and the false…

A:

Q: At a certain bank the amount of time that a customer spends being served by a teller is exponential…

A: The exponential mean of customer served by teller is 3 minutes.

Q: It has been reported that last year 25% of drivers have fallen asleep at the wheel. If 192 drivers…

A: Given: p=0.25, n=192 and q=1-p=1-0.25=0.75 Here the random variable X follows binomial distribution…

Q: The death rate from the A virus in one country has been determined to be 1 person per 100 000…

A: One of the most important discrete type random variable is binomial distribution. When the number of…

Q: Find the probability that a randomly selected high school student who took the reading portion of…

A:

Q: The time required to repair a machine is an exponentially distributed random variable with mean of…

A: A machine is exponentially distributed with mean 0.5 hour

Q: A machine dispenses water into a glass. Assuming that the amount of water dispensed follows a…

A: concepts and reasonuniform distribution is a continuous probability distribution.it is defined…

Q: If the probability of seeing a ship from the beach in 1 hour is 0.40, what is the probability of…

A: Note: Hi there! Thank you for posting the question. As there are multiple different questions,…

Q: Find the probability for a roll of two dice. Rolling a sum less than 5 (the sum is found by adding…

A: It is given that there are two dice that are rolled. The compound event consists of mutually…

Q: Calculate the probability that the wire selected to be used in the project is not made from copper.…

A: The data is given by   10 12 14 Total Copper 0.12 0.09 0.11 0.32 Iron 0.05 0.15 0.10 0.30…

Q: Find the probability of 4 coins falling all tails of when tossed simultaneously Answer should be…

A:

Q: A certain disease has an incidence rate of 0.7%. If the false negative rate is 8% and the false…

A: P(D) = 0.007 P(D')  = 1-0.007 =  0.993 P(+|D) = 1-0.08 =  0.92 P(+|D') = 0.04

Q: The number of work accidents that occur per week in a mine follows Poisson's law so that the…

A: It is given that P(X = 2) =(3/2) P(X = 1). That is,

Q: A certaln disease has an Incidence rate of 0.4%. If the false negative rate Is 5% and the false…

A:

Q: A recent survey of 1090 U.S. adults selected at random showed that 689 consider the occupation of…

A: If there are n mutually exclusive, exhaustive and equally likely outcomes of a random experiment and…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.