Assume T is a random variable representing time, with an exponential distribution and a mean of 21. Find the probability P(T <= 21).

Q: A normal probability distribution  a. Must have a standard deviation of 1  b. Can be either…

A: The given distribution is normal distribution.

Q: Pat is required to sell candy bars to raise money for the 6th grade field trip. There is a 40%…

A: p=0.40 5 candy bar is to be sold

Q: A bus comes by every 12 minutes. The times from when a person arives at the busstop until the bus…

A: Given: Define the random variable, X : Time waited by the person.  X ~ Uniform(0,12)

Q: Find the distribution function which corresponds to the probability distribution defined by f (x) =…

A:

Q: Fill in the P (x=x) values to give a legitimate probability distribution for the discrete random…

A: Only missing values are P[X=-2] and P[X=6], remaining values have known probability masses, so we…

Q: Assume the geometric distribution applies. Use the given probability of success p to find the…

A:

Q: A die is rolled 3 times. Let X be the number of sixes that occur. Determine the probability…

A: X= the number of sixes n=sample size= 3 p=probability of getting a 6= 16 X follows a binomial…

Q: The time (in minutes) between telephone calls at an insurance claims office has the following…

A:

Q: The digestion time (in hours) of a fixed amount of food is exponentially distributed with a = 1. a.…

A: The digestion time (in hours) of a fixed amount of food is exponentially distributed with a = 1. The…

Q: Let the random variable Z have a standard normal distribution. Find each of the following…

A: Since, you have you have posted a question with multiple subparts we will solve first three subparts…

Q: A random variable x has a standard normal probability distribution.  Which of the following…

A: Given that a random variable x has a standard normal probability distribution.

Q: Aircraft turnaround time is defined as the time required to prepare an aircraft for its next flight…

A:

Q: Six males of whom two are of blood type A, the other two of blood type B and the last two of blood…

A: Given information: 6 males of whom 2 are of blood type A, the other 2 of blood type B and the last 2…

Q: Assume the Poisson distribution applies. Use the given mean to find the indicated probability. Find…

A:

Q: b. Determine the probability that the next fight from the airline will require between 25 and 35…

A:

Q: What is the mean (expected value) of online videos watched daily by young adults between the ages of…

A: It is given that the X be the number of videos that a randomly chosen young adult between the age of…

Q: Ten percent of the population is left-handed. A class of 100 students is selected. Convert the…

A: Given that there are 100 students  The percentage of left handed is 10% Here, the sample size large.…

Q: randomly selected to gather data in the hours spent per week edule of STATPRO. The table below shows…

A: Solution

Q: A random variable x has a standard normal probability distribution.  Which of the following…

A:

Q: If z is a standard normal random variable, find the probability. The probability that z lies…

A: Answer: From the given data, If Z is a standard normal random variable, Mean(μ) = 0 Standard…

Q: The chance of an IRS audit for a tax return reporting more than 25,000 in income is about 2% per…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: Five males with an X-linked genetic disorder have one child each. The random variable x is the…

A: The probability is the chance that an event is likely to happen. It never takes negative values.…

Q: Show that B, 21. 21. 2.

A:

Q: As determined from long experience, the number of automobiles rented per hour, X, at the Rent-A Car…

A: Solution-: Let, X=Automobiles Rented and P(X)=Probability  We have following table: X P(X) 0…

Q: Find the probability distribution for the random variable   There is a package containing 16…

A: There are 16 resistors so N= 16 4 are defective, X= 4 Probability of selecting defective resistor…

Q: Let x represent the number of times a customer visits a grocery store in a 1-week period. Assume…

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

Q: what is the probability the ambulance took between 6-10 mins to arrive

A: Let X denotes the time an ambulance take to arrive in response to a 911 calls. Given that X follows…

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.21​%. A random sample of 30 of…

A:

Q: The arrival of an item ordered in Amazon is assumed to follow the exponential distribution with…

A: The objective of this question is to calculate the parameter λ of the exponential distribution, and…

Q: Does the table show a probability distribution? Select all that apply. A. Yes, the table shows a…

A: It is given that the random variable X is the number of children among the five who inherit the…

Q: The annual sales of dealers of a company follows the normal distribution with its mean as K94. A…

A: Given Mean=94 Variance=81

Q: Let XX represent the full height of a certain species of tree. Assume that XX has a normal…

A: Solution: Let X be the height of a tree. From the given information, X follows normal distribution…