If 30 tickets are numbered consecutively from 1 to 30, and 2 tickets aré selected at random without replacement, find expected (sum of the numbers on the two tickets) and find the variance (sum of the numbers on the two tickets).

Q: A dietician is researching two new weight gain supplements that have just hit the market: Ripped and…

A:

Q: Steel produced by company A has an average tensile strength of 4500 lbs and a variance of 40000 lbs,…

A: Solution: Given information: nA= 50  Sample size of company A nB= 100 Sample size of company  B μA=…

Q: Suppose you commit a crime. The way the judge is going to set your sentence is by pulling a number…

A: Given data X Frequency Probability P(X) X x P(X) X2  x P(X) 1 10 10/16 = 0.625…

Q: there is no relationship between age and job satisfaction in hypothesis in a formula form

A: The relationship between two variable is denoted by correlation. Correlation testing is the test of…

Q: Find the mean and variance of the numbers generated by rolling two die and counting the sum of the…

A: We have given that the two dice are rolled. Total number of possible outcomes = 36 The sample space…

Q: When I am taking a Simple Random Sample, what do I do if say I take 23 samples from a range of 93…

A: The random number table is used to obtain the sample random sample which provides each member of the…

Q: To obtain a maximum amount of variance, an item ought to have a degree of difficulty of what?

A: To obtain a maximum amount of variance an item ought to have a degree of difficulty is the number of…

Q: and second components meet specifications are 0.96 and 0.89, respectively. Let X be the number of…

A: The random variable X defines the number of components in the assembly that meet specification.

Q: Suppose you throw two dice and take the sum as a discrete random variable. Let us assume you take a…

A: When you throw two dices together, each dice will show a number ranging from 1 to 6 on the side…

Q: Suppose the probabilities that there will be 0,1,2, or 3 power failures in San Jose, CA in July are…

A: Solution: a. Let X be the power failure. From the given information, Then, the mean number of…

Q: When conducting a t-test for independent samples we have 2 ways of computing the variance. One way…

A: Let X and Y are two different samples. The sample size of X data is n1 with sample mean (x̄) and the…

Q: Two separate samples, each with n = 14 individuals, receive different treatments. After treatment,…

A:

Q: Here are 6 celebrities with some of the highest net worths (in millions of dollars) in a recent…

A: Given: The data on net worth(in millions of dollars) of 6 celebrities is provided below: 5500 3700…

Q: Provide an example of a random variable with variance of 0

A: Given that We have provide example of random variable with variance of 0

Q: Why do we calculate sums of squares to find variance?

A: The sum of squares is an important term in statistics. The variance depends on the sum of squares .…

Q: An urn contains 7 black and 16 white balls. A ball is to be drawn randomly from the urn. Let X= 1 if…

A: Black balls= 7 White balls = 16 Total balls= 7+16= 23  Probability of getting black balls= 7/23…

Q: Two separate samples, each with n = 14 individuals, receive different treatments. After treatment,…

A: # Given : two samples n1=n2=14  and sample varience S1^2=1638  and S2^2=1620  then to find pooled…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.