A box contains three red marbles and four green marbles. JB picks two marbles at random from this box. Let x be the number of red marbles selected. What is P(x = 1 or 2)?

Q: Q7:-During the 10 weeks of a session, the marks scored by two candidates, A and B. Taking the…

A:

Q: Use a= .05 and one tailed test  t= -5.00, df= 5. reject, fail to reject

A: Given α = 0.05, two tailed test, t = -5 and degree of freedom = 5.For a two tail test if test…

Q: (a) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the…

A:

Q: An insurance company offers a discount to homeowners who install smoke detectors in their homes. A…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

Q: There is a bag containing 40 blue marbles and 60 red marbles. You choose 10 marbles (without…

A: The given data : Number of blue marbles =40 Number of red marbles =60  Thus, the total number of…

Q: Twenty five percent of the customers of a grocery store use an express checkout. Consider five…

A: Twenty five percent of the customers of a grocery store use an express checkout.  Probability = 25%…

Q: A survey of cars on a certain stretch of highway during morning commute hours showed that 70% had…

A: It is given that X denotes the number of occupants in a randomly chosen car.

Q: Q3/ In a cement store there are (750) bags, (400) of which are salt- resistant, (200) of them are…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A researcher rejected the null where r(146) = .148, p = .03 and concluded that the effect size was…

A: Conditions: If the value of r lie between 0.1 to 0.3 then the effect size is small. If the value of…

Q: There are 10 students in a cafeteria. If x denoted the number of males, what are the poasible values…

A: Given: The number of candidates in a cafeteria is, n=10. The number of males is x. The objective…

Q: find the missing element in the sample space S=(x|x^3+2x^2-5x-6=0) where S={-3,-1,_}

A:

Q: Five-digit random numbers are used to simulate scores on each hole in an 18-hole round of golf. The…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: Consider the case where the predetermined average number of bus arrivals at the Cubao Station is 6…

A: Given: Average number of buses arrivals at the Cubao station is 6 per 15 minute period.

Q: Each of 12 laptops was returned to the dealer due to a strange sound from the fan when they were…

A: The number of laptops are 12. The number of faulty laptops are 7. The number of laptops have less…

Q: Find the missing element in the sample space S = {x|x³x² - 17x - 15 = 0} where S = {-3,-1,__}.

A:

Q: The table shows the average APM** of 5 random Dota2 players along with the player's win rate.…

A: The data given is shown below Average APM Win Rate (%) 315 53.45 150 51.21 80 52.16 150…

Q: In the survey of employees at a fast food it was determined that  9 cooked food  12 washed dishes…

A: Given: The total number of employees = 34. The number of employees who cooked food = 9. The number…

Q: A casino offers the following game, which costs 10 dollars to play. Two cards are selected at…

A: Considering the provided information, if both of the cards are kings, then you win = 220+10-10 =…

Q: 20% of our Jadara university students feel that the bus system at the university is adequate. If 100…

A: Given that, n = 100, p = 0.20 The values of mean and standard deviation are,

Q: -) If a person was chosen at random, find P{male} D If a person was chosen at random, find P{not…

A: According to the data of the survey conducted, a total of 52 candidates were surveyed. The…

Q: se were randomly selected t

A: Sample Mean 1 (X1​)(\bar X_1) = 6.96.9 Population Standard Deviation 1(\sigma_1)(σ1​) =…

Q: Find P(L)   Forty-eight percent of all Californians registered voters prefer life in prison…

A: Solution

Q: There are 10 females among 25 employees in the office. A committee of 4 persons is to be selected at…

A:

Q: This exercise refers to a standard deck of playing cards. Assume that 5 cards are randomly chosen…

A: Given information- This exercise refers to a standard deck of playing cards. Assume that 5 cards are…

Q: Two trains arrive at a station at random between 7 A.M. and 7:30 A.M. One train stops for 5 min and…

A:

Q: In the survey of employees at a fast food it was determined that  9 cooked food  12 washed dishes…

A: The shaded region in the Venn diagram represent number of employees washed dishes or operated cash…

Q: student answers 10 quiz questions completely at random. The first five are true false and the second…

A: From the given information we find the expected number of correct answers.

Q: A student takes a true-false test that has 6 questions and guesses randomly at each answer. Let X be…

A:

Q: To see if the average number of family-owned daycares per county is greater than the average number…

A: The study is about to see the average number of family-owned daycares is greater than the average…

Q: d. Two females are selected. e. No males are selected.

A:

Q: In the survey of employees at a fast food it was determined that  9 cooked food  12 washed dishes…

A: The shaded region in the Venn diagram represent number of employees did at least two of these jobs:

Q: Use the P-value Decision Rule to either reject or do not reject H, when: p = 0.0001 a = 0.05 A)…

A:

Q: Let a chip be taken at random from a bowl that contains six white chips, three red chips, and one…

A: The probability of picking the white chip is:   P(X=1) =66+3+1            =0.6

Q: A B Total 17 11 6 Male 13 41 Female 18 14 38 Total 35 25 19 79 If one student is chosen at random,…

A: Given :   A B C Total Male 17 11 13 41 Female 18 14 6 38 Total 35 25 19 79

Q: sume that you have 9 mice in the cage: 3 white males, 3 gray females, and 3 gray males. Two se are…

A:

Q: b. Use the fact that the total probability is equal to 1 to create a formulafor P(X = 3) in terms of…

A: Given information:Discrete random variable:If the variable X takes finite or countable values, then…

Q: A ping pong ball is drawn at random from an urn consisting of balls numbered 4 through 9. A player…

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Q: A bowl contains 10 blue balls and 10 green balls. A girl selects balls at random without looking at…

A:

Q: A random experiment consists of tossing a die and observing the number of dots showing up. Let A₁:…

A: toss a dice  x = no. of dots showing up. sample space of x  : {1,2,3,4,5,6} A1 : number of dots…

Q: An experiment involves tossing a pair of dice, one green and one red, and recording the numbers that…

A: A die have 6 faces. 1,2,3,4,5,6 then S is a sample space:    S= {(1, 1),(1, 2), (1, 3), (1, 4), (1,…

Q: The flight from Greenville to Charlotte can take anywhere from 43 minutes to 68 minutes.  Suppose…

A:

Q: A ping pong ball Is drawn at random from an urn consisting of balls numbered 4 through 9. A player…

A: Given dataA ping pong ball Is drawn at random from an urn consisting of balls numbered 4 through 9.…

Q: A shipment of 7 television sets contains 2 defective sets. A hotel makes a random purchase of 3 of…

A: Given data: The numbers of television in the shipment are n=7. The numbers of defective televisions…

Q: A. A pair of dice is rolled. If X is the sum of pairs of numbers. 1. What is the P(x) which is…

A: Given: A pair of dice is rolled. Let X is the sum of pairs of numbers.

Q: A certain type of digital camera comes in either a 3-megapixel version or a 4-megapixel version. A…

A: From the given information, Let the random variable X represent the number of 3 megapixel cameras…

Q: 3) If there were a 1000 runners in a race, how many of them got a z score of 3 or better for the…

A: The z score value is related to normal distribution and it explains that, how standard deviations we…

Q: A high p-value, such as 0.8, prov This statement is true.

A: The P-value is 0.8.

Q: Q. 1 Deal two cards from a well-shuffled deck of cards. Let the random variable X be the number of…

A: Joint probability distribution: If X and Y are the discrete random variable with the probability…

Q: Q3/ In a cement store there are (1000 ) bags, (700) of which are salt- resistant , (200) of them are…

A: Given that, in a cement store there are (1000) bags, (700) of which are salt- resistant, (200) of…

Q: f you toss 9 fair​ coins, in h

A: Thanks for giving opportunity to serve for batleby students, Hey, There ! Thank you for posting…