- You roll a six-sided number cube 270 times. Predict how many times you will roll a number less than 3.

Q: Match these values of r with the accompanying scatterplots: 1, 0.997, - 0.405, 0.405, and - 0.761. W...

A: As 5 values of correlations are given.  We know that, if data goes from up to downwards then it has ...

Q: Betty has several of the standard six-sided dice that are common in many board games. If Betty rolls...

A: The probability that She rolls a three = 16   answer     The probability that She rolls an odd numbe...

Q: John went to a pastry Shop in New York. He went to order 6 pastries and the store had 4 different ty...

A: Given, John went to order 6 pastries from a store that has 4 types To find: The probability of at mo...

Q: . It is estimated that about 5% of the professors at Metro State University use illegaldrugs. Suppos...

A: This problem is related to the Bayes theorem. Because we have give the prior probability and we are ...

Q: 1. (4 marks) Check whether the mean and the variance of the following distributions exist: a. fx(x) ...

A: Question 1:   (a)  Here fX(x) is pdf of Cauchy distribution and we know that mean and variance does ...

Q: q25- What proportion of the total observations lie to the left of the median? Select one: a. a...

A: What proportion of the total observations lie to the left of the median?

Q: Five Number Summary  57  67 68  69 72  75 76  79 80  81 83  85 Use Empirical Rule for the followin...

A: Since you have submitted two questions, we'll answer the first question. For the second question ple...

Q: A homeowner stays in a single location for an average of 20 years with a standard deviation of 5.7 y...

A: Given data,μ=20σ=5.7P(X>40)=?

Q: 5. The correlation coefficient is r = (Round to the nearest hundredth.) eck

A: X Y x-xbar y-ybar (x-xbar)(y-ybar) (x-xbar)^2 (y-ybar)^2 1 -2.5 -3 3.35 -10.05 9 11.2225 2 -4 -2...

Q: Consider the joint probability function: X12 Y -1 a 0.1 0 bd 1c 0.3 0.4 If X and Y are independent r...

A: Given:         Y       1 2 Total   -1 a 0.1 0.1+a X 0 b d b+d   1 c 0.3 0.3+c   Total ...

Q: It has been found that 1 out of every 10 people who visit a retail website make a purchase worth R70...

A: Let us denote X=the number of people who purchase worth R700 or more. n=number of trials= 12 p=proba...

Q: Let X and Y be 2 random variables with joint probability distribution given in the following table f...

A: From the table we see that: f(X=0)=0.3+0.1=0.4 f(X=0 and Y=3)=0.3  

Q: In a XYZ car company car saleswoman has to sell 1 car. She is provided with a very large (infinite f...

A: The trials with the customer will be operating until one car is sold. So to the distribution approac...

Q: Consider the following payoff table for decisions D1 and D2. Probabilities of Outcomes Monetary Outc...

A: The payoff table of decision  D1 and D2 is, Decision O1 O2 O3 P1 P2 P3 D1 -10 20 30 25% 50% 25...

Q: 2. The discrete random variable X has the probability function kx, x = 2,4, 6 P(X = x) = - 2), x = 8...

A: From the given information, it is clear that,  The discrete random variable X has a probability func...

Q: Assume that X - Bin(n,p) and E(X) = 4, var(X) = 2. Then the number of trial n is A) n = 10 B) n = 9 ...

A: Given, Assume X~Bin(n, p) and Mean: E(X)=4, Variance: var(X)=2.   The required calculation can be de...

Q: If the probability density function of the random variable X is given by 0<x<1 f(x) ={ /x 10 otherwi...

A: We know that the total probability is always 1. So, ∫-∞∞f(x)dx=1

Q: Suppose that when a new machine is functioning well, 92% of the items produced are non-defective. As...

A: Given data: The given numbers of trials are n=5. The percentage of the non-defective items produced ...

Q: In a bag there are 8 red balls,  and 2 pink balls.  You pay 9 dollars to draw 2 balls.  If you draw ...

A: The number of red balls are 8. The number of pink ball are 2. The number of ball can be drawn are 2.

Q: SH financial is examining the use of its midtown ATM machine. Here are the numbers of transactions m...

A: The smallest value of the data set is= 9the largest value of the data set=53so the range= 53-9=44

Q: A shipment of 8 computers contains 4 with defects. Find the probability that a sample of size 3, dra...

A: Given that there are 8 computers.  Among them 4 are defective. So (8-4)=4 are good.    We can select...

Q: (17') The random variable X obeys the distribution Binomial(n,p) with n=3, p=0.45. (a) Write Px(1), ...

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

Q: Please answer all (:

A: Formulae : Let n be the number of independent trials and p be the probability of success. Mean = np ...

Q: Suppose X1,..., Xn is a random sample from a distribution specified by the cumulative distri- bution...

A: Solution:

Q: Please help me for Question 2

A: Y1=X1X2  then, possible values of y1 is as follows: Y1 1 2 3 4 6 9 Situations (Total situati...

Q: Probability Question

A: Given Information: Probability of computer received from F1=0.60 Probability of computer received fr...

Q: Discrete math and probability

A: Given that throwing two standard dice. Addition of two die is at least 8 and the first die is at mos...

Q: Assume that there are 3 balls in an urn: 0 of them are red and 3-0 white. Two balls are extracted (w...

A: GivenThe number of red balls in an urn =θThe number of white balls in an urn =3-θThe total balls =3T...

Q: Red pens come with a certain amount of dye #2 from the factory. The average pen needs approximately ...

A:

Q: 5. In a group of students, there are 3 girls (Amy, Asha, and Barb) and 3 boys (Len, Moe, and Max). ...

A: Note : Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the questio...

Q: The following table lists the number of unicyclists in Corvallis, OR. by age group. Age Group Fre...

A: Given the table lists the number of unicyclists in Corvallis, OR. by age group. We have to find the ...

Q: Show all working explaining detailly each step Answer must be typewritten with a computer keyboard! ...

A: hello thank you for the question, As you have mentioned question number Q8a, answering only the that...

Q: Adults who are being tested for dementia are asked to perform mental tasks such as listing as many a...

A: Given data in sorted order is 11,17,19,21,21,22,23,24    

Q: Miss Marple loves tea with milk. She claims that she can taste, blindfolded, whether the tea or the ...

A: Formulating Hypothesis :   H0 : p ≤0.5 ( she does not have a special skill, she is just guessing)Ha ...

Q: There are 16 shirts in your closet, 6 blue and 10 green. You randomly select one to wear on Monday, ...

A: Given that there are 16 shirts in my closet, 6 blue and 10 green. I can select any 2 shirts from the...

Q: Five number summary 57  67 68  69 72  75 76  79 80  81 83  85 92  94 messageAsk an Expert notific...

A: According to the Bartleby guideline only three subparts of the question can be solved at one time, p...

Q: An initial survey was given out to determine shopping preferences and age group. On the survey, ther...

A: Given that there are 4 shopping preferences and 6 age groups.  Using the fundamental counting princi...

Q: 27.

A: a) There are 13 spades in the deck of 52 cards.So number of favorable cases= 13The number of unfavor...

Q: In which of the following situations would you use theoretical probability? Select all that apply. O...

A: Theoretical Probability: It the probability used when the outcomes are independent and random. The o...

Q: Urgent need help ? understanding this problem

A: P(X=7)  = 0.0818   P(X≤7)  =  0.1192

Q: In a science fair​ project, Emily conducted an experiment in which she tested professional touch the...

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

Q: Please! Could you help me with this question?

A: a) The probability of randomly selecting a yard with a sprinkler system that is also fertilized is:P...

Q: A female student flips a coin and rolls a die. Assuming statistical independence, what is the probab...

A: There are 2 possible outcomes when a coin is tossed. Head and Tail. Let us denote H=Head and T=tail ...

Q: Please write each step.

A: Given,  x+y is the independent variable  fx(x)=2e-2xx≥00x&lt;0fy(y)=4ye-2yy≥00y&lt;0      

Q: Consider the following very simple random walk model. Let the starting position Xo = 0 be determinis...

A: The time series according to the problem is given by: t 0 1 2 3 4 5 6 7 8 9 X 0 1 1 1 1 2 3 3 3...

Q: 47,

A: Given Information: Consider statements p and q: p : It is raining q : Kaitlin is wearing a hat (a) K...

Q: ) Compute P(1<X< 4). p) Compute the mean and standard deviation of X. (Ro

A: The mean of random variable X can be calculated as E(X) = ∑x.PX=x And the E(X2) can be obtained as E...

Q: Suppose that a random variable X is normally distributed with a mean of 200 and a variance of 625. ...

A: Given that X follows a normal distribution with mean=200 and variance= 625 So standard deviation=625...

Q: Political scientists want to determine the probability of exactly 3 out of the next 5 voters they me...

A:

Q: 3t For a random variable X with mgf Mx(t) = exp{t² – }; Find E[X²]

A: Given, MXt=expt2-3t2 Now, ddtMxt=ddtexpt2-3t2=expt2-3t2×ddtt2-3t2=expt2-3t2×2t-32=expt2-3t2×4t-32 an...