QUESTION 1 A normally distributed random variable X with variance o=256 and P(X> 130)-0.6554.Then the mean of X is 123.6 232.4 27.6 136.4

Q: se the Normal distribution to compute probabilities about the sample proportion of those who…

A: The sampling distribution of the sample proportion is approximately normal with at least 5 expected…

Q: QUESTION 22 Random variable (binomial trial p = 0.6, n = 5) a) Create a table to represent the…

A: Let X be the random variable which follows Bin(5,0.6)

Q: QUESTION 15 The standard error of the mean 1 Is never larger than the standard deviation of the…

A: Formula for standard error: Standard error=Population standard deviationsample size That is, the…

Q: Question 1: A random variable X is distributed nomally with mean 508 and standard deviation 32. For…

A:

Q: Question 2 a. The probability distribution function of random variable X is given below. X 4 6. 8…

A:

Q: Question 8.1.25-T Assigned Media v The shape of the distribution of the time required to get an oil…

A: Let, X: The time required to get an oil change at a 20 minutes oil change facility. The shape of the…

Q: QUESTION 13 A random sample of size n=64 is drawn from a normal population with a variance of 16.…

A: Given: n=64,σ=4,α=1-0.90=0.10

Q: QUESTION 1 A random sample of size n = 64, from a population with standard deviation g=74, is used…

A: Given Information: Sample size (n) = 64 Population standard deviation σ = 7.4 H0:μ=70 against…

Q: Question 7 Determine the cumulative distribution function of a binomial random variable with n= 3…

A: Binomial Distribution: If we have n trials each having two outcomes, say Success and Failure, trials…

Q: Question 8 The lifetimes of interactive computer chips produced by a certain semiconductor…

A:

Q: Example 9.19 Given that a random variable X is distributed normally with a mean of 70 and a variance…

A:

Q: QUESTION 4 A normally distributed random variable X with variance o2=256 and P(X> 130)-D0.6554.Then…

A: In question, Given that the variance of random variable X is 256 and P(X > 130) = 0.6554 Then…

Q: We study the random variable T, which has a Normal distribution with mean -4.2 and variance 3.61.…

A: GivenA random variable T~Normal(μ=-4.2,σ2=3.61)Mean(μ)=-4.2Variance(σ2)=3.61standard…

Q: Question 4 X is a random variable with mean 20 and variance 9. a) Write P(X s 15) in terms of the…

A: Given: μ=20 and σ2=9. a)PX≤15=PZ≤15-μσ=PZ≤15-203=PZ≤-1.67=0.0475

Q: QUESTION 7 Suppose that total cholesterol in US men aged 35-44 can be modeled by a normal…

A:

Q: Question 5 5 pts Assume that the random variable X is normally distributed, with mean 80 and…

A: We have to find out given probability...

Q: QUESTION 23 The probability distribution of the number of daily network blackouts is given by 1 3 p(…

A: We have given that,  X be the random having probability mass function (p.m.f) is,      X :-     1…

Q: Question 3: X is a Gaussian random variable with E[X] = 0 and P[-10<X<10] = 0.1. What is the…

A:

Q: QUESTION 8 If Z is a standard normal random variable, find P(Z < 1.25). For all normal distribution…

A: Using the Probability distribution table, we have

Q: Question 6 – The average starting salary of this year's graduates of a large university (LU) is…

A: Hi, thank you for the question. As per our Honor code, we are allowed to attempt first three sub…

Q: Question [5] The number of calories in a salad on the lunch menu is normally distributed with mean =…

A: Given data,Mean μ=100Variance σ2=16sd σ=4

Q: QUESTION 13 A life insurance salesman sells on the average 6 life insurance policies per week. Use…

A:

Q: Question 7 The length of time needed to complete a certain test is normally distributed with mean 52…

A:

Q: Question 5. The number of traffic accidents per year in a given highway follows a Poisson…

A: Let X denote the no.f traffic accidents per year in a given highway and it follows Poisson…

Q: Question 9 X is a random variable with mean and variance H and of, The standardized form of X is 2 =…

A:

Q: QUESTION 4 The mean number of cars confiscated by a wrecker is five per day. Using the Poisson…

A: X be the mean number of cars confiscated by a wrecker.X~poission(λ)λ=5 per daywe know;probability…

Q: QUESTION 2: The manufacturer of a balloon claims that there is 4% chance that the balloon contains…

A: Let X be the number of balloons containing some holes. Given: Number of balloons (n) = 15…

Q: QUESTION 6 If 6 of 24 remote controls were defective, then the mean of the probability distribution…

A: 6 out of 24 remote are defective.

Q: QUESTION 7 The fill weight of a certain brand of adult cereal is normally distributed with a mean of…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: QUESTION 6 A normally distributed random variable X with variance o2-256 and PO> 130)=0.9251. Then…

A: Given Sigma^2=256 P(X&gt;130)=0.9251 We want to find the value of mean

Q: QUESTION 6 The lifetime of a certain battery is normally distributed with mean value of 10 hours and…

A: Let X be the lifetime of a battery. Mean is μ=10 hours. Standard deviation is σ=1 hour. The number…

Q: QUESTION 8 If X be a normally distributed random variable with variance of 25 such that P(X > 20) =…

A: Given information Variance = 25 Standard deviation ? = √25 = 5 P(X&gt;20) = 0.0778 P(X ≤ 20) = 1 –…

Q: Question 2. Let X be a normal random variable with u = -5 and o² = 4. a) Find P(X –3|X > -5).

A:

Q: The management of a supermarket wants to adopt a new promotional policy of giving free gift to every…

A: We know that, the expenditure for all customers, X ~ N(400, 900) or, X ~ N(400,302) or, Z = (X -…

Q: Question 2 2.1. Let Y,, Y, .., , be a random sample of size 4 from an exponential with parameters…

A: Introduction:  Exponential Distribution:  A continuous random variable follows Exponential…

Q: An analogue signal received at a detector, measured in microvolts, is normally distributed with mean…

A:

Q: QUESTION 13 A life insurance salesman sells on the average 5 life insurance policies per week. Use…

A: Answer - Given, A life insurance salesman sells on the average  5  life insurance policies per week.…

Q: Question 6: If the random variable X has a normal distribution with mean 40 and std. dev. 5,…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: QUESTION 24 A normally distributed random variable X with variance o2=256 and P(X> 130)-0.9251. Then…

A:

Q: QUESTION 47 Suppose that the number of typo errors in a textbook is a Poisson distributed random…

A: Given,A random variable X~Poisson(λ=2/100 pages)P(X=x)=e-λ×λxx! ; x≥0and we know that in poisson…

Q: QUESTION 3 A certain type of engines lasts, on average, 4 years with a standard deviation of 1.4…

A:

Q: The management of a supermarket wants to adopt a new promotional policy of giving free gift to every…

A: Let, X = Expenditure for a customer at this supermarket after the promotional policy is advertised.…

Q: Question 1: A random variable is distributed normally with mean 3200 and standard deviation 800.…

A:

Q: Question 3 Which of the following statements is/are true? (1) For any given distribution and its…

A: Given that  We have find whether the statement is TRUE or FALSE :

Q: Question 2: A random variable is distributed normally with mean 3200 and standard deviation 800.…

A:

Q: Question 1 a) On average 2.5 faulty reports are made to a company's switchboard per day. i. Name the…

A: Given :  On average 2.5 faulty reports are made to a company's switchboard per day.

Q: QUESTION 15 A random sample of sizen 36 is drawn from a normal population with a variance of 25,…

A:

Q: Question – 4: Normal Distribution & Z-table Suppose that the time required for a machine to stick a…

A: Given: μ=2σ=1n=100 The probability that sticking labels for 100 bottles takes more than 215 seconds…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.