The probability distribution of a random variable X is given in the table below: -4 -2 4 .1 P(X = =) .2 .3 .1 .3 Compute the : Mean: (round to 1 place if necessary) Variance: |(round to 2 places if necessary) Standard Deviation : (round to 2 places if necessary) 2.

Q: Calculate the mean, variance, and standard deviation of this probability distribution. (Show all…

A: Mean=E(X)=∑X P(X)          =(0 * 0.27)+(1 * 0.35)+(2 * 0.18)+(3 * 0.12)                +(4 *…

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values…

A: Solution: From the given information, X follows binomial distribution with parameters n=70 and…

Q: K A study was done on proctored and nonproctored tests. The results are shown in the table. Assume…

A: The given values are: n1=31, x¯1=77.19, s1=11.09 n2=33, x¯2=87.66, s2=20.66

Q: What is the Variance of a geometric distribution having parameter p-0.24? Select one: a. 4.167 b.…

A: We have find variance distribution...

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values…

A: Mean of binomial distribution is given by, mean= np mean= 60× 0.4  mean= 24.0

Q: Provide an appropriate response. In a pizza takeout restaurant, the following probability…

A: Formula : Variance :

Q: elp The following data represent the pH of rain for a random sample of 12 rain dates. A normal…

A: 5.205.725.244.805.024.574.745.195.434.764.565.30

Q: Given the set of numbers: {1, 4, 3, -4}, find their variance and standard deviation. [Hint: For…

A:

Q: Last year, a person wrote 119 checks. Let the random variable x represent the number of checks he…

A: Suppose the random variable x defines the number of checks a person wrote in one day.

Q: Use technology to construct the confidence intervals for the population variance o2 and the…

A: c=0.90S2=5.76n=30

Q: Sick Days in Bed A researcher wishes to see if the average number of sick days a worker takes per…

A: Given that Sample size n = 37 Sample mean = 5.4 Population SD = 1.4 Level of significance = 0.01

Q: Soda comes in cans where the amount of carbonated refreshment contained in each can is normally…

A: given datanormal distributionμ=12.1  ouncesσ=0.12  ouncesS is amount of liquid∴S~Normal(12.1,0.12)

Q: 1. A binomial distribution is the probability distribution of the type of probability experiment…

A: 1. Characteristics of Binomial Distribution a) Number of Observation (n) is fixed b) The Probability…

Q: About 38% of a population are of a particular ethnic group. 190 people are randomly selected from…

A: Probability = 38%Sample size = 190

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values…

A: Given,n=70p=0.8A radom variable X~Binomial(n=70 , p=0.8)

Q: Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is 22.9…

A: Step 1:Given data : Mean μ=22.9Standard deviation σ=2.8Sample size : n=33 Step 2:Since the…

Q: er to use the defining formula for sample standard deviation, it is helpful to first calculate (x -…

A:

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values…

A: It is given that, n=129 p=0.27

Q: A lawyer commutes daily from his home to his office. The average time for a one-way trip is 24…

A:

Q: For each of the given the data sets below, calculate the mean, variance, and standard deviation. (a)…

A: The formula of mean is,

Q: The random variable Y has the distribution shown below: Value 1 4 Probability 0.2 0.8 The mean of Y…

A: Given: Value            1        4 Probability     0.2     0.8 Mean, E(Y) = 3.4

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values…

A: Given n = 80 p = 0.2 we need to calculate mean, variance and standard deviation

Q: Los Angeles workers have an average commute of 27 minutes. Suppose the LA commute time is normally…

A: Let us consider, X be a random variable which is used to denote the commute of LA Angels workers…

Q: Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs Probability…

A:

Q: Use a one sample z-test to determine whether or not a sample mean of 34 differs from the population…

A: Given that  N=15 Sample mean=34 Population standard deviation =5

Q: The variance of a binomial distribution for which n = 77 and p = 0.69 is: a. 8.24 b. 32.94 c. 16.47…

A: Given : Binom. dist. having :  n(no. of obser.)=77 p(prob. of success)=0.69

Q: Calculate the variance and standard deviation of the following frequency distribution showing the…

A: Mid values of weight (class Interval) Xi: 74.5, 94.5, 114.5, 134.5, 154.5, 174.5, 194.5 fi: 9, 10,…

Q: Find the mean, variance, and standard deviation of the binomial distribution with the given values…

A:

Q: A researcher records the crying time (in minutes) of infancy’s given oral administration of sucrose…

A: Solution: From the given information,

Q: The histogram shows the reviewer ratings on a scale from 1 (lowest) to 5 (highest) of a recently…

A: The question is about graphs and measures.Given :

Q: A random sample of the number of classroom hours for eight full-time faculty for one week is shown…

A: The given data is: 10.5 9.8 12.8 8.6 7.2 10.1 13.5 8.4 Level of significance,…

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.