Example 9.6 For a binomial distribution the mean is 4 and variance is 2. Find probability of getting (i) at least 2 successes, (ii) at the most 2 successes.

Q: Show that: αλ (a-1)²(a-2) Var(x)=-

A:

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

A:

Q: Your son is a teacher in a state university. As per her class rule, the probability of not getting…

A:

Q: (a) Given that the system has a type 1 defect, what is the probability that it has a type 2 defect?…

A: here as per guidelines i have calculated 3 subparts kindly repost for remaining  HERE FROM GIVEN…

Q: Use Bayes rule to calculate P(d is present | t is positive).

A: here given, We are interested in testing for a disease d. We know that in the general population,…

Q: suppose that 1 in 25 cards in a scratch in win lottery gives you a prize. what is the probability of…

A: Solution-: Suppose,1 in 25 cards in a scratch in win lottery gives you a prize.  We find P(winning…

Q: In a bingo game , there are 75 balls. in the first draw, determine the probability that ball is a. A…

A:

Q: The standard measure of a table's length is 16. A student measured the length of a table 3 times.…

A: The following information has been given: The standard measure of a table's length is (l) =16 cm.…

Q: 6. In a sports game, the "favourite" is the team with the higher probability of winning and the…

A: In a sports game, the "favourite" is the team with the higher probability of winning and the…

Q: You are responsible for a group of taxis serving the downtown Saint Louis area. To provide a…

A:

Q: Solve the following problems on a clean sheet of paper. Upload photos of your answer sheets showing…

A: In question, give in a jar there are 12 marbles. Red marbles = 4 Blue marbles = 5 Orange marbles = 3…

Q: Q2: An urn contain three red balls ,two blue ball and five white balls, A ball is selected and its…

A: It is given that Number of red balls = 3 Number if blue balls = 2 Number of white balls = 5 Total =…

Q: dog shelter giving away 19 different dogs, but you have room for only 4 of them. How many different…

A: Given data,No of different dogs n=19you have room for only 4 of them r=4How many different dog…

Q: In how many ways can a subcommittee of eight be chosen from a Senate committee of eight Democrats…

A:

Q: Failing to meet one or more of the 9 Brandford-Hill criteria means that the studied relationship…

A: Casuality of the variables can be explained using the 9 Brandford-Hill criteria. It is a basic for…

Q: The life of automobile voltage regulators has an exponential distribution with a mean life of six…

A: Given Mean=6 X=5

Q: к учу PCX,Y) X=1,2 y=1,2,3 other Find the marginal probability function 5 of Y P (Y)

A:

Q: 4. A barber shop located in Greensboro observe a traffic of 4 customers per hour arrive at a…

A:

Q: study was conducted to see how people reacted to certain facial expressions. A sample group of n =…

A: There are 6 independent samples which are Surprised, Nervous, Scared, Sad, Exited, and Angry. We…

Q: Illustration 67. In an umbrella factory, where the umbrellas are bundled in tens, there is a little…

A:

Q: The standard measure of a table's length is I6. A student measured the length of a table 3 times.…

A: Precision and accuracy are two aspects of measurements.

Q: e probabity that a part produced by a certain factory's assembly ine will be defective is 0.013.…

A:

Q: Determine the value for c and the covariance and correlation for the joint probability density…

A: We need to find the value for c and the covariance and correlation for the joint probability density…

Q: 3-A coin is tossed 3 times the probability that all 3 tosses are tail equal a); b) 8. c) d):

A: Given that  A coin are tossed 3 times  Sample space=S S=(HHH,HHT,HTH,THH,TTH,THT,HTT,TTT)

Q: A diet clinic states that there is an average loss of 24 pounds for those who stay on the program…

A: For the given data use z test for one sample mean

Q: A student can solve, on average, 8 Sudoku problems in one hour. What is the probability that the…

A: In question, Given that a student can solve on average 8 sudoku problems in one hour. Let X be the…

Q: Q4/4:The following data represent the number of damaged pieces of spare parts for the production of…

A:

Q: What is the standard deviation of the average fill volume of 100 cans?

A: We have given that the fill volume of cans are independent, normal random variables. The standard…

Q: The probability that the head of a household is home when a telemarketer calls is 0.4. Given that…

A:

Q: Andrea did a survey in her statistics class and found that 18 students out of 25 use the library at…

A: Total number of students = 25Number of students uses library atleast twice aweek =18

Q: (a) Flip a coin 500 times virtually. Then explain how it compares to the probability of flipping a…

A:

Q: a random sample of 68 cows on a farm,the average weight is 172.2 lb. with a standard deviation 4.2…

A:

Q: Is there a significant relationship between a person's age and time spent on social media in a day?…

A: For the given data Select the correct choice

Q: If 10% of certain products are found to be defective, using both Binomial and Poisson models, find…

A:

Q: 8. Suppose that X₁, X₂, ..., X₁, are n independent normal random variables each with mean µ and…

A: Given Xi~N(μ, σ2)

Q: Suppose that 168 out of a random sample of 225 letters mailed in the United States were delivered…

A:

Q: A sinusoidal random process is defined as X[n] = A cos(0.3n) for A~N(0, 1). Compute the mean…

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

Q: 2. Construct the CDF of X if the pdf is given by f(x) = (1 − ²) (2,6)(x).

A:

Q: Why a sample size of n=100 is more likely to have a percentage of pop songs closer to the population…

A: Sample of size 32 or greater is consider as large sample .

Q: There are few diseases that have only one causal agent and most diseases are caused by a…

A: The provided statement is "False".

Q: 2. Two fair die are rolled, showing two distinct values. Compute (with explana- tions) the…

A: if two fair die are rolled than the possible outcomesare…

Q: fetime of a certain brand of battery is known to have a standard deviation of 23 hours. Suppose that…

A:

Q: You are trying to collect 6 rare photocards from a foreign album. Calculate the average number of…

A: Given information: Trial 1 Trial 2 Trial 3 1 3 5 3 3 5 4 2 4 3 1 3 2 4 4 1 2 1 2 3…

Q: A researcher measured how far 100 students from York (mean = 30 kilometers, SD = 5.2 kilometers) and…

A:

Q: Subject: Your Month к хчу pcxing) other Find the marginal probability of Y P (Y) Date: X=1,2 153…

A: XY 1 2 Total 1 k 4 k 5 k 2 2 k 8 k 10 k 3 3 k 12 k 15 k Total 6 k 24 k 30 k we know…

Q: 6. In a university scholarship program, anyone with a grade point average over 7.5 receives a $1,000…

A:

Q: Q3:A:Choose the appropriate answer: 1-If P(A)=0.7 ,P(B)=0.2, P(A n B) = 0.5,then P(AU B) = a)0.6…

A: As per company guidelines i solved only First questions .thank you

Q: Show complete solution. A diet clinic states that there is an average loss of 24 pounds for those…

A:

Q: Your answer is partially correct. The percentage of titanium in an alloy used in aerospace castings…

A:

Q: Evaluate the area under the normal curve between two z-scores, -1.12 and  1.14.

A: Let Z be the random variable from normal distribution the  we will find the area under normal curve…