Approximately 70% of all projects at the work place were finished before the due date. Assume each project is finished independently of others. You randomly selected 20 projects that are due. Let X be a random variable and counts the number of projects that are finished by the teams. a) What distribution is this random variance X? what are the two parameters of this distribution as identified by the problem?  b) What is the probability that at least 18 projects were completed? c) What is the expected number of projects completed in your sample of 20

Q: 2  Define the random variable, its distribution, and compute for the variable/measure that is being…

A: Given Chane of striking oil = 20%

Q: Find the probability of getting 2 to 5 diamonds using normal distribution.

A:

Q: According to Nielsen Media Research 30% of televisions are tuned in to the NFL Monday Night Football…

A: Note: Thanks for posting the question, in subparts (b) and (c), “exactly 5 or the 15 televisions” is…

Q: A spinning Merry-go-round consists of 8 different colors chairs numbered 1 to 8. When it stops, Mary…

A: Let, X denotes the number observed.

Q: Suppose you commit a crime. The way the judge is going to set your sentence is by pulling a number…

A: Given data X Frequency Probability P(X) X x P(X) X2  x P(X) 1 10 10/16 = 0.625…

Q: Determine the probability that the professor asks the class 9 times in one session. Let X be the…

A: Here use poission process  And given that The number of times the professor asked the class "how are…

Q: A spinning Merry-go-round consists of 8 different colors chairs numbered 1 to 8. When it stops, Mary…

A: Reviewing the information, X : Chair number on which Mary sits X=(1,2,3,4,5,6,7,8)

Q: 2. In a factory that produces pieces of ready-made concrete, if the percentage of producing…

A: Given,n=5p=0.6q=1-p=1-0.6=0.4X=no.of defective piecesX~Binomial (n=5 , p=0.6)P(X=x)=nx px qn-x    ;…

Q: A supervisor in nestle company. She gives equal opportunity for the members to work for her. She has…

A:

Q: What is a random variable?

A: A random variable is a variable whose possible values are numerical outcomes of a random phenomenon.…

Q: 4. An average of 35 fish per day enter the intake pipe of a water treatment plant. A hydraulic…

A:

Q: A random variable X can takes values 1,2,3 or 4 with probabilities 0.6,0.2,0.15 and 0.05…

A:

Q: A six-sided dice is rolled. Four points is scored if the roll comes up with 5 or 6, one point if it…

A:

Q: Suppose you throw two dice and take the sum as a discrete random variable. Let us assume you take a…

A: When you throw two dices together, each dice will show a number ranging from 1 to 6 on the side…

Q: Suppose the probabilities that there will be 0,1,2, or 3 power failures in San Jose, CA in July are…

A: Solution: a. Let X be the power failure. From the given information, Then, the mean number of…

Q: If the probability that a patient experiences postsurgical shock following a certain surgical…

A: Givenp=0.6n=12x~Binomial(n=12,p=0.6)P(X=x)=Cxn×px×(1-p)n-x   ; x=0,1,...,n

Q: 3. A phenomenon is observed many, many times under identical conditions. The proportion of times a…

A: Here use basic definition of statical terms.

Q: Degree of Injuny Seurity Measures no precaution Seat belt only (s) seat bolt and air bag (2) sturdy…

A: Dear student, We are allowed to solved first 3 parts only, Ask the remaining parts separately

Q: Let Y₁, Y2, Y3 be independent and identically distributed random variables from the same population.…

A: be the independent and identically distributed random variables from the same population. be the…

Q: J&T express delivers packages to customers of online shop. The probability of delivering a package…

A:

Q: A pair of dice are rolled. Let X be a random variable that denotes the sum of the number of dots…

A: Here Given  Pair of dice are rolled  So Total Possible number of Outcome=6×6=36

Q: Let Random variable X be the sum of two dice. Present the probability distribution (tabular) of the…

A:

Q: 2. With the same coin, give the probability distribution for the number of heads possible in 3…

A: The total possible number of outcomes when you draw a coin 3 times is 23 = 8  List the total…

Q: Three items are drawn in randomly from a population of 7 items.The item drawn may be defective or…

A: Given, Three items are drawn in randomly from a population of 7 items. The item drawn may be…

Q: Question 1: A manufacturer receives a shipment of 275 laptop computers of which 24 are defective. To…

A: Given: 24 out of 275 laptop computers are defective. 8 computers are randomly selected. Let X…

Q: Consider a population with 3 observations: 6, 10 and 12. You use simple random sampling without…

A: Given : Population size (N)=3 6 10 12 Sample size (n)=2

Q: Suppose that a satellite defense system has 3 satellites that operate independently.  Each satellite…

A: It is needed to determine the probability distribution for the random variable X.

Q: can you explain how to standardize this? ste

A: Since you have asked multiple questions, we will provide the answer to the first question. In order…

Q: 1. The data records the length of stay of engineering students in the university. We will assume a…

A:

Q: Ques 3) The probability of success of random variable X is 0.6. X follows a geometric distribution.…

A:

Q: Describe the types of probability samples and discuss under which conditions they may be the most…

A: Solution-: Describe the types of probability samples and discuss under which conditions they may be…

Q: Yvette, the purchasing officer of a large manufacturing company, inspects ten items selected at…

A: A lot contains 50 items of which 5 items are defective. The probability of defective item (p) = 5/50…

Q: The average time spent by a car salesman each weekend is normally distributed with a mean of 12.5 hr…

A: Given Information: Meanμ=12.5hrS.Dσ=3hr

Q: When a hunter aims at a helpless rabbit, he has 1 chance out of 10 to hit it. 1. Two hunters aim…

A: When a hunter aims at a helpless rabbit , he has 1 chance out of 10 to hit it. So, probability that…

Q: 5 unbiased coins are tossed simultaneously and the occurrence of a head is termed as a success.…

A:

Q: Compute the variances of the two random variables whose probability tables are given in Table 7.…

A: (a) Let X be the random variable representing the outcome in the first probability distribution.…

Q: For each situation given below, do the following: A) Decide if the random variable is Poisson (or…

A: The probability mass function of the Poisson distribution is given as follows:

Q: Suppose a certain towing service receive requests for assistant in an average of 10 per hour. Let…

A: According to the provided information,  λ = 0.5 n=10

Q: Three items are drawn in randomly from a population of 7 items. The item drawn may be defective or…

A: The given data is: Total Items = 7 Number of items drawn = 3 Number of defective items =2 X=…

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.