The ages of students in a middle school have the following probability distribution: x 12 13 14 15 P(x) 0.25 0.29 0.32 0.14 a) What is the probability a student chosen at random is no less than 13 years old? b) What is the mean age of the students in middle school? c) What is the standard deviation for the ages of the students in the middle school?

Q: Industry standards suggest that 10% of new vehicles require warranty service within the first year.…

A: Note: Hey there! Thank you for the question. As you have posted a question with several sub-parts,…

Q: 8. Assume that the total score (from both teams) for college football games averages µ = 42 points…

A: It is given that the mean is 42 and the standard deviation is 20.

Q: A survey showed the following probabilities of having X number of cats per household   X = number of…

A:

Q: 8) Suppose that weight of adolescents is being studied by a health organization and that the…

A: We have given that,  Let x be random variable having probability mass function (p.m.f)  Let k is the…

Q: A portfolio manager believes that tomorrow foreign exchange rate of the german ,marks per US dollar…

A:

Q: The Vice-President of ABC Bank feels that each savings account has, on average, four credit cards.…

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

Q: 4.21. The salary of 1,000 engineers at Ford was normally distributed with mean salary $67,000 and…

A: The salary of 1,000 engineers at Ford was normally distributed with mean salary $67,000and standard…

Q: Consider the following probability distribution: P(X) 1 0.1

A: Condition for valid distribution is  ∑PX=1

Q: Consider the following probability distribution: P(X) 1 0.1 2 ? 3 0.2 4 0.3 What is the mean of the…

A: Introduction:  Probability distribution:  The probability mass function of any discrete random…

Q: Suppose that the random variable xx, shown below, represents the number times . P(x) represents the…

A:

Q: Suppose that a law enforcement group studying traffic violations determines that the accompanying…

A: An observation is said to be unusual if its probability is less than 0.05.

Q: Consider the following probability distribution: X P(X) 1 0.1 2 ? 3 0.2 4 0.3   What must be the…

A: Given, X 1 2 3 4 P(X) 0.1 x 0.2 0.3

Q: According to a Harris Interactive survey conducted for World Vision and released in February 2009,…

A:

Q: Suppose that the random variable z, shown below, represents the number times. P(z) represents the…

A: From the provided information, x P (x) 0 0.2686 1 0.264 2 0.2633 3…

Q: 3. The number of suits sold per day at a department store is shown in the table, with the…

A: The mean of a discrete random variable X is denoted μx or, when no confusion will arise, simply μ.…

Q: Below is the probability distribution for number of children a person has in a specific town. x…

A:

Q: Consider the following probability distribution for a random variable X : X 3 4 6 7 Р(X) 0.15 0.10…

A: Given, P(X≤5.5)=?

Q: From a certain provincial bus station, it will take a passenger between zero to fifteen minutes to…

A:

Q: Illustrate a probability distribution of a random variable X showing the number of face mask sold…

A: Given, Day   Number of Face Mask 1 25 2 20 3 15 4 14 5 15 6 10 7 12 8 10 9 15…

Q: 1. Results of a study conducted to determine the water consumptions in number of cubic meters of…

A:

Q: The probabilities that are 1, 2, 3, 4, or 5 defective television sets of a certain manufacturer are…

A: Measured of dispersion measures the spread of the data. Standard deviation is a measure of…

Q: A die is loaded, and it was determined that the probability distribution associated with the…

A: (a)Probability of the number being even = sum of the probabilities of all even sample events.P(2)…

Q: A random variable X has the probability distribution given in the following table: 2 3 4 5 6 P(X =…

A: When random variable X has the probability distribution then sum of the probabilities must be equal…

Q: Consider the following probability distribution: P(X) 1 0.1 3 0.2 0.3 What is the mean of the…

A:

Q: Suppose that weight of adolescents is being studied by a health organization and that the…

A:

Q: 1.4) A local bottling company has determined the number of machine breakdowns per month and their…

A:

Q: A cellular phone service provider has determined the number of devices per account has a probability…

A: Note: Please repost remaining subparts as i can answer only 3 subparts as per my policy.   Given…

Q: Can the following table be a probability distribution? xx P(x)P(x) 1 0.3752 2 0.0278 3 0.2274 4…

A: The table is, x P(x) 1 0.3752 2 0.0278 3 0.2274 4 0.2344 5 0.1352

Q: 1) a. The number of mobile phones made by Finland has the following probability distribution: 20 2 +…

A: It is been asked to find expected number and standard deviation of mobile phones made by Finland and…

Q: Is the following considered a probability distribution? -1 1 P(x) 0.50 0.30 0.20 Ο Νο. Σp (π) 41 O…

A:

Q: Consider the following probability distribution: -1 2 6. 8. P(x) 0.15 0.10 0.05 0.5 Find P(6).…

A: Obtain the probability of 6.   The probability of 6 is obtained below as follows:   From the given…

Q: The following table represents the probability distribution of the number of air conditioners that…

A: Solution

Q: What are the probability distribution of X and Y? Are they independent?

A: Since ,the joint probability distribution of X and Y is given by,   1 2 3 Total 1 0.32 0.03…

Q: 1. The table shows the probabilities for the number of bets that must be placed in order to win in a…

A:

Q: Consider the following probability distribution: X P(X) 1 0.1 2 ? 3 0.2 4 0.3   What…

A: Conditions for discrete probability distribution:The following requirements should be satisfied for…

Q: Construct a probability distribution and its corresponding histogram. The probabilities that a…

A: Given :  X 0 1 2 3 P (X) 0.22 0.33 0.37 0.08

Q: 2. By reviewing statistics Canada's website, the following table indicates the number of children…

A:

Q: 2. The IQ scores of children in a special education class are normally distributed with u = 95 and o…

A: Given information is ; Population mean ( μ) = 95 Population standard deviation ( σ) = 10 assume that…

Q: Suppose 40% of all vehicles are trucks. Of the next ten vehicles that pass on the road, what is: a)…

A: Given that probability of observing a truck=40% =0.40 Probability of not being a truck= 1- p=q=…

Q: what is the probability they have an average weight of greater than 4 kilos and less than 7 kilos?…

A: There are 225 participating dogs at the National Dog Show that weigh an average of 5 kilos, with a…

Q: An article in The New York Times reports that several hedge fund managers now make more than a…

A: Given: Income of a manager in = $300 Additional 5% of the remaining income

Q: A set of final examination grades in an introductory statistics course is normally dis- ributed with…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: 1. The following is a probability distribution for the number of credit cards a person has. Number…

A: a) The expected value or average is calculated as follows:

Q: The Sports Associates Vending Company supplies refreshments at a baseball stadium and must plan for…

A: Given Information: X  represents the number of baseball games required to complete a World series…

Q: From a population consisting of 20, 28, 32, 38, and 40, a sample of size 2 will be selected with…

A: Given, 20, 28, 32, 38, 40 n = 5       To find, a) List down all the possible sample of size 2 with…

Q: Suppose the probability distribution of x, the number of defective tires on a randomly selected car…

A: Let X be the  random variable having probability mass function is,  X 0 1 2 3 4 P(X)  0.54 0.18…

Q: Suppose the earnings of a laborer, denoted by X, are given by the following probability…

A:

Q: 11. A pediatrician records the number of ear infections that his patients have during the winter. A…

A: Solution According to guidelines we solve only first question

Q: Suppose that the random variable z, shown below, represents the number times. P(z) represents the…

A: Given data,

Q: The following probability distributions of job satisfaction scores for a sample of information…

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