Ms Loom is writing a quiz that contains a multiple-choice question with five possible nswers. There is 30% chances that Ms Loom will not know the answer to the question, and she will guess the answer. If Ms Loom guesses, then the probability of choosing the correct answer is 0.20. What is the probability that Ms Loom really knew the correct answer, iven that she correctly answers a question?

Q: Chi-Square distribution having one (1) degree of freedom will be asymptotic on x-axis only True…

A: We have given that the statement about to the Chi-Square distribution.

Q: Binomial Distributions Under ordinary circumstances: For all babies born in the entire global…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Distribution A is a distribution of sample means with a mean of 50 and standard error of 5.…

A: It is given that: The sample mean of distribution of A = 50, Standard error of distribution of A =…

Q: Limiting distribution is W= { 2/21, 1/3, 2/7, 2/7} Give two interpretations of what the first entry…

A: The transition probability matrix is given asP=1/21/2001/703/73/701/31/31/302/31/61/6 Limiting…

Q: Chi – squared distribution is a special case of gamma distribution in which - True False

A:

Q: • Two independent variables X and Y are set by the tables x -3 1 5 yi 2 4 pi 0,1 0,6 p pi 0,4 0,6…

A: given: Probability distributions of X and Y X and Y are independent variables

Q: x² = Cell Count Row Column ||||||| 1 1 2 2 3 3 all cells (85-247)2 247 1 + 2 1 2 1 2 Expected Cell…

A: The question is about chi square test.Given :

Q: Empirical  rule for data with a Bell-Shaped Distribution is expressed as:     75-89-99.7…

A: Bell shaped distribution is given.

Q: mean 1.5. Calculate the proportion of days on which (i) neither car is used and núfituitemands for a…

A: Solution:

Q: 6. We test if the population mean body temperature of AUM is less than 97° F. We collected a sample…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: The joint distribution of X and Y is given by: f(x.y) = - 3-2y For x = -1,0,2 and y = -1,0. Then k=

A: The joint density function provides the distribution of both the variables which occurred together.…

Q: sen the mean number (to the nearest whole number) of stidents who will finish the e less than I bour…

A: here use property of cumulative distribution

Q: steam and leaf of data                     leaf unit= 10               2       2          59 5…

A: Range= Maximum observation-minimum Observation Here maximum observation= 61 Minimum Observation= 25…

Q: Question: What is the Central Limit Theorem and why is it important in statistics?

A: Introduction: The Central Limit Theorem (CLT) is a fundamental result in probability theory and…

Q: B (a) What is the mean difference in GPAS between the two schools? (Use u, - H, where u, is School A…

A: All the following results are given based on the given output. a). The mean difference is 0.435…

Q: A new drug is being trialled to help reduce heartburn in people over the age of 60. Nine individuals…

A: Given that the time until each person's next bout of heartburn, in days, is thought to be modelled…

Q: Below is a graph of a normal distribution with mean u=4 and standard deviation o = 2. The this…

A: Let X be the random variable from normal distribution with mean (μ) = 4  and standard deviation (σ)…

Q: The time (in minutes) until the next bus departs a major bus depot follows a distribution with f(x)…

A: Given X: random variable for waiting time fx=120            25<x<45           0…

Q: The joint distribution of (X,Y) is given by f(x, y) = k(3x + 2y), x 0,1,2; y = 1,2,3. The marginal…

A: Given: fx,y=k3x+2ywhere x=0,1,2y=1,2,3

Q: The ---------- of disease represents the rate of occurrence of new cases arising in each period in a…

A: Epidemiology is used to determine the disease in the population and the health status of the…

Q: Improving SAT scores. Chance (Winter 2001) published a study of students who paid a private coach to…

A: Solution :- (A) The adjusted R2 value of 0.76 means that the model with x1 and x2 as predictors…

Q: If the median of a set of data is equal to the mean, then the data are chi-square distributed the…

A: The study is about the median of a set of data is equal to the mean.

Q: 12. Calculate the following probabilities using the corresponding table. Experimental distribution…

A:

Q: frequency Histogram 7: Income (15,26] (26,36) (36,47) (47, 185 Income in 1000 Histogram 9: Number of…

A: A histogram is one of the graphical representations of the data. In the histogram, several bars…

Q: The Empirical Rule For Normal Distributions (a.k.a the 68-95-99.7 Fule) od 68% 95% 99.7% mean-3s…

A: GIiven that mean =120 ,s.d =10

Q: The time (in minutes) until the next bus departs a major bus depot follows a distribution with f(x)…

A: From the given informations: fx=120,   25<x<45

Q: Values are uniformly distributed between 171 and 241. *(Round your answers to 3 decimal places, e.g.…

A: Given that X~U(a , b) a=171 , b=241

Q: Incomes are exponentially distributed with 2-0.0001. What fraction of the population has income (a)…

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

Q: 12 Data Management - Continuous Distributions What does the area under the normal curve represent?…

A: From the given information we find the solution.

Q: FX is distributed as a continuous uni Form distribution over the interval (ab) prove that D- the…

A: The median of this distribution is equal to its mean:To prove this, we first need to find the median…

Q: Age - X Number of meal in a day - Y Frequency of snack in a day - Z. Can we conclude that X, Y and Z…

A: A normal distribution is a statistical distribution in which the underlying dataset has a symmetric…

Q: f Class Interval fx cf (x - mean)^2 f(x - mean)^2 X- mean Frequency Class Mark 95-99 3 90-94 85-89…

A: Arrange the  Given data is ascending order Class Interval Frequency 60 - 64 4 65 - 69 9 70…

Q: Using Standard distribution find p(z>a)=0.5

A: The objective is to find p(z>a)=0.5.

Q: example of mean and variance of: Bernoulli Distribution Hypergeometric Distribution Negative…

A: Explanation: Bernoulli Distribution: Bernoulli distribution is a discrete distribution. Let a random…

Q: V- Chapters 3-5 K (b) The middle 90% scores lies between on the low end and on the high end. (Round…

A: Given data :  u = 3.7 o = 0.78

Q: Class Interval fx cf X- mean (x - mean)^2 f(x - mean)^2 Frequency Class Mark 95-99 3 90-94 85-89 10…

A:

Q: The Table below shows the average score of the150 students sampled from the University of the East…

A: Use your results above to comment on the shape of the distribution. Give a reason for you answer.…

Q: QUESTION 49 "Based on their results, a researcher makes the interpretration that variable A is not…

A: In this case, we need to identify the correct options.