Find the variance of the number of storms in August.

Q: what is the average number of traffic accidents

A: Discrete series means where frequency  of a variable are given but the variable is without class…

Q: What is the variance of a set of 6 numbers: 1, 2, 3, 4, 5, 6?

A: The variance is calculated as the average of the squared differences of each number from the mean.

Q: The table summarizes results from 985 pedestrian deaths that were caused by automobile accidents.

A: Solution: The given table of data is

Q: Find the variance of the data

A: a) given data : -3,-2,-1,0,1,2,3,4

Q: Office-chair racing is now an official sport in Japan. Teams of 3 race around a 200-meter circuit…

A: Brand A Brand B 116 114 107 102 101 100 97 94 94 90 here  n=5

Q: Describe about the negatively skewed shape of histogram.

A: The histogram is said to be left-skewed or negatively skewed when the histogram has a long-left…

Q: In Major League baseball, the speed of a pitch is very important. How fast is the speed of a major…

A: From the given information, Sample data = {92.8, 87.0, 89.1, 96.2, 75.6, 89.6, 92.5, 83.3, 86.5,…

Q: Find the variance of X X: 73,51,73,182,45,90,111

A:

Q: There are four brothers in a family.  Their ages are 7 years,10 years,15 years, and 21 years.…

A: From the provided information, Population size (n) = 4 The ages are 7 years,10 years,15 years, and…

Q: Yi = 5,25,50,100,200.

A: Given data isYi = 5,25,50,100,200

Q: Four fish caught in the San Antonio river had the following lengths; 15cm, 11cm, 12cm, and 18cm.…

A: Given lengths,15, 11, 12, 18sample size (n)=4

Q: Shelly and Kelly Macdonald met up with Sarah and Tara MacNeill to go fishing in Cape Breton. They…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: In a certain town, 22% of voters favor a given ballot measure. For groups of 21 voters, find the…

A: Sample size = 21 Probability = 22% = 0.22

Q: Distance traveled (in kilometers per day)  of 5 selected sales persons; 100, 112, 118, 120, 120.…

A:

Q: Explain Computing Variances by Conditioning.

A:

Q: There are eight patients waiting in a doctor's waiting room. They have been waiting for 9 minutes,…

A: Given: Given data in minutes is: 2, 4, 5, 7, 8, 9, 11, 12

Q: Suppose you roll one six-sided die. Let X =the number shown on the die. Calculate o the variance of…

A: On a six sided die there are 1,2,3,4,5,6 as numbers Probability of getting each =1/6 So mean or…

Q: What equation should be used in significance of the value found in scatter diagram of the data

A: A scatter plot is a graphic tool used to display the relationship between two quantitative…

Q: How to find the variance, explain the formula

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: How do you calculate the variance of a set of numbers?

A: Variance is a measure of how spread out a set of numbers is. To calculate the variance: Find the…

Q: Rof 15 > Calculate the standard deviation of the following set of numbers. Use the formula for the…

A: Given X1=11 X2=14 X2=8

Q: Yi = 5,25,50,100,200.

A:

Q: PART C. Records in the country show that six out of 10 convicted offenders were reconvicted 10 years…

A: Introduction: The head of a rehabilitation program at the local prison wishes to test if the program…

Q: Salaries for administrative assistants range from $32,000 per year to $67,000 per year. Salaries for…

A: Introduction: For administrative assistants, minimum salary per year = $32,000, and maximum salary…

Q: How to find the variance of a set of numbers

A: Variance:- The amount of data values spread from the mean is known as variance.

Q: The foreman at a large plant estimates that there are defective parts about 1% of the time.  If the…

A: It is given that n =20,000 and p = 0.01.

Q: In Major League baseball, the speed of a pitch is very important. How fast is the speed of a major…

A: Draw a histogram for the given data: The data represents the speeds of the pitches in miles per…

Q: Describe about the positively skewed shape of histogram.

A:

Q: Explain the variance of the sum or difference of the two variables X and Y ?

A: Variance of sum of two variables: The variance of the sum of two or more random variable is equal to…

Q: uppose that a box contains 3 RED blocks, 2 BLUE blocks, and 1 GREEN block. Suppose that 3 blocks are…

A: Let X be the number of Blue blocks drawn. Then P(X=x)=n1xn2n-xn1+n2n,x=0,1,2o,otherwise ,where n1=2,…

Q: Suppose Laura, a facilities manager at a health and wellness company, wants to estimate the…

A: The critical-value is obtained by using Excel function “=TINV(probability, degrees of freedom)”.…

Q: Establish a relationship between CDF and PDF.

A:

Q: Suppose for 40 observations the variance is 50. If all the observations are increased by 20, the…

A: given If the values of all 40 observations are increased by 20 the mean increases by 20 as well,the…

Q: write two numbers with mean 8 and variance 4

A:

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.