A boiler has four identical relief valves. The probability that any particular valve will open on demand is 0.95. Assume independent operation of the valves. Calculate P(at least one valve opens). (Round your answer to eight decimal places.) Calculate P(at least one valve fails to open). (Round your answer to four decimal places.)

Q: College Courses At a large university, the probability that a student takes calculus and is on the…

A: Let us define the two events as, A = the students takes calculus. B = the student is on the dean’s…

Q: as a decimal correct to at least three decimal places.)

A: Given The store manager assures you that 16 of the 57 boxes on the shelf have the secret decoder…

Q: The probability that a spark plug is defective is 35%. Suppose that a person buys 7 spark plugs.…

A:

Q: Based on a poll, among adults who regret getting tattoos, 22% say that they were too young when they…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Alison Bender works for an accounting firm. To make sure her work does not contain errors, her…

A:

Q: The probability of success is 0.30. If the number of trials is 12 and the number of successes is 6,…

A: Solution:

Q: A point is chosen at random in the square shown below. Find the probability that the point is in the…

A: Given that, a dart hits the small square target shown below at a random point. Each side of the…

Q: A dart hits the square dartboard shown below at a random point. Find the probability that the dart…

A: Side of a square = a = 13Radius of a circle = r = 6

Q: Show formula please and how to do it on a TI-84 calculator. Thank you.    Giving a test to a group…

A: Given A test to a group of students, the grades and gender    A B C Total male  3 18 7 28…

Q: A student takes a ten question true false quiz but did not study and randomly guesses each answer.…

A: Given: Number of questions = 10Probability of getting correct =1/2 =  0.5 (because it is a true -…

Q: What is the probability a woman has breast cancer given that she just had a positive test?

A: Given,  1% women have breast cancer 85% chance of having breast cancer and test positive(true…

Q: A gardener buys a package of seeds. Seventy percent or seeds of this type germinate. The gardener…

A: It is given that n =80 and p =0.70.

Q: College Courses At a large university, the probability that a student takes calculus and is on the…

A: P( takes calculus and is on the dean's list) = 0.056P(student is on dean's list) = 0.24P(taking…

Q: find the probability that the first raw chicken sandwich you get will be on the xth sandwich you…

A:

Q: Suppose that 18% of a random sample of 2307 Miami residents said that they will donate blood in…

A: p =0.18 n = 2307

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.41%. A random sample of 31 of…

A: Guven:Mean (µ) = 2.41Standard deviation (σ) = 1.36Sample size (n) = 31

Q: Allie plays on the varsity basketball team and makes 79% of her free throws. If she takes 12 shots,…

A: Given : p = 0.79 q = 1 - p = 1 - 0.79 = 0.21 n = 12 we have find P(x = 8) here, x follow a binomial…

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: We have to find given probability.

Q: An archer is able to hit the​ bull's-eye 59​% of the time. If she shoots 7 ​arrows, what is the…

A: Let the random variable X denote the no. of arrows hit the​bull’s-eye and it follows binomial…

Q: Zoom a. Find the probability of randomly selecting a student who spent the money, given that the…

A: Given :     purchased gum kept the money Total students given four quarter 28 18 46…

Q: A school newpaper reporter decides to randomly survey 10 students to see if they will attend Tet…

A: Sample size 25% of students attend Tet festivities.

Q: What is the probability of randomly selecting a Male or a Cat?

A: It is given that Total = 83 Number of males = 38 Number of cat = 32 Number of cat and males = 15

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: John runs a computer software store. Yesterday he counted 131 people who walked by the store, 66 of…

A:

Q: Examine the image below and then answer all parts of the question under it. Enter your answers as…

A: a) There are 4 yellow objects in 10 objects.So, P(yellow)=410=0.4b) There are 3 hearts in the 10…

Q: Find the probability of that he or she owns a credit card given that the student is a freshman.…

A:

Q: The probability of obtaining a raw chicken sandwich at Windies restaurant is 10.4%. Complete the…

A: The probability of obtaining a raw chicken sandwich at Windies restaurant is 10.4%   that is the…

Q: 3. Now, take your die and roll it 30 times. Create a table below to document each roll of the die.…

A: Given the experiment of rolling a die 30 times.

Q: (d) Tomorrow, the same local weather report will be given. Estimate the probability that it will be…

A: The tables shows the results of 365 consecutive days and compares whether it rained or not to…

Q: John runs a computer software store. Yesterday he counted 132 people who walked by the store, 69 of…

A: GivenNo.of people who walked by the store=132No.of people came into the store=69No.of people bought…

Q: Determine whether the random variable is discrete or continuous. . The height of a randomly selected…

A:

Q: You buy a lottery ticket that costs $20. There are only 100 tickets available to be sold in this…

A: The amount for a lottery ticket is $20.