Find P(7

Q: he range of the random variable X is (0,1,2,3,x) where x is unknown. if each value is equally likely…

A: Given data, 0,1,2,3,x Mean=6 x=?

Q: 20 samples from a shipment of 100 items are tested. The total number of defective items in the…

A: Given that 20 samples are tested from 100 items which contains 86 defective items. And X denote the…

Q: A random variable X denotes the number of consumers in a sample of 300 who favor a particular…

A: It is given that X : number of consumers out of 300 who favor a particular product.

Q: Give the range of values that the random variable X may assume and classify the random variable as…

A: Discrete variable means It can have some limited values only..It can not have In between values..…

Q: Let x be a random variable that represents red blood cell (RBC) count in millions of cells per cubic…

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

Q: Let X be a random variable from a Chi-Square Distribution with 13 degrees of freedom. Jada is…

A: Let X denotes the random variable from chi square distribution with 13 degree of freedom Y=a+bx…

Q: Express the variance of the variable X in terms of n.

A:

Q: Find the probability of choosing two numbers from 0 to 1 such that sum of their square is less than…

A: Formula: Probabolity=(no of  possible out come/Total no of out come)

Q: Find the probability a randomly selected z-score is between -1 and 1.2.

A: Probability that the randomly selected Z-score is between -1 and 1.2 P(-1<z<1.2)   We know…

Q: Show that their correlation coefficient is p =1_if a > 0 for any b =- 1 if a<0 for any

A:

Q: Let X be a random variable that represents the number of times an image (H) appears. Find average…

A: By observing the above problem, we easily see that the distribution of X follows a Binomial…

Q: because all airline passengers do not show up their reserved seat, an airline sells n = 125 tickets…

A: Let X be the random variable representing the number of passengers, out of 125, showing up to board…

Q: Let x be a random variable that represents red blood cell (RBC) count in millions of cells per cubic…

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

Q: Let X be a random variable representing the number of times that you have to roll two dice until you…

A: Here, the given context follows negative binomial distribution with k = 10 and p = 118 (probability…

Q: Let X represent the number of heads that can come up when tossing a coin in two cases: twice and…

A: Solution-: We find sample PMF when tossing a coin in two cases: twice and thrice times

Q: Let x be a random variable that represents red blood cell (RBC) count in millions of cells per cubic…

A: Hypothesis testing is conducted for the parameters of the population like population mean,…

Q: Time spent by students studying daily is a uniformly distributed random variable with mean = 136…

A: Solution: 1. Let X be the time spent by students studying daily. From the given information, X…

Q: It is a function that assigns a real number to each outcome in the sample space of a random…

A: We have given that an statement about to real number to each outcome in the sample space of a random…

Q: Let X denote the random variable that gives the sum of the faces that fall uppermost when two fair…

A: In general, there are 36 possible outcomes when rolled a pair of balanced dice.

Q: A deck has only 51 cards left, because a spade has been removed. From this deck, cards will be drawn…

A: It is given that there are 51 cards (n) in a deck while one card of spades has already drawn which…

Q: It's desired to model the random variable X with a shape that rises to a peak near x=6 and whose…

A: The PMF can be found by altering and standardizing the quantity shape.

Q: Ten kids line up in a random order. There are three boys and seven girls in the group. Let X be a…

A: The total number of kids is 10 The total number of boys is 3. The total number of girls is 7. All…

Q: If 25% of the oranges produced by a farm is defective in a random sample of 20 oranges, then if the…

A: Given 25% of total 20 oranges are defective, To calculate (X&gt;3) if X represents the number of…

Q: The probability that a z-score will be between -1.4 and -1.04 is?

A: The objective of this question is to find the probability that a z-score will fall between -1.4 and…

Q: Assume that random guesses are made for seven multiple choice questions on a medical…

A: It is given that assume random guesses are made for seven multiple choice questions on a medical…

Q: A random variable X has only two values a and b with P(X = a) = p , P(X = b) = q (p + q = 1). Find…

A:

Q: Approximately 8% of students at a local high school participate in after-schoold sports every year…

A: Given p=0.08n=60

Q: Let P and Q be two independent Random variables with Var(P) = 5 and Var(Q) = 4. Find Var(7P+4Q-1).

A:

Q: Create a column of numbers going from 0 to 30. in binomial distrubution with n=30 and p=0.5.…

A: Introduction to binomial distribution: Consider a random experiment involving n independent trials,…

Q: It is known that in a certain town 30% of the people own an Kpfone. A researcher asks people at…

A:

Q: Find the mean the of the probability distribution of the random variable if P(X) = x-3/15 for X= 7,8…

A: Formula : μ = E(x) = Σx * p(x)

Q: Assume the flying height of an airplane is a Gaussian Random variable X with ax = 5000 m and ay-2000…

A: We have given that,  Let X be the Gaussian Random variable from normal distribution with mean (μx) =…

Q: A large bag contains pretzels with 3 different shapes: heart, square, circle . Billy plans to reach…

A: Given that, the bag contains three pretzels: heart, square and circle. He will stops drawing when he…