4) Find the average mark(mean)  5) How many students are below the average mark?  6) Find variance for the above data using the frequency table in Q.1

Q: A national random sample of 20 ACT scores from 2010 is listed below.  29, 26, 13, 23, 23, 25, 17,…

A: Sample mean, x¯=∑xin And sample standard deviation, s=∑i(xi-x¯)2n-1where, xi=ith observation of the…

Q: 6, 8, 9, 4, 3, 11, 4, 6, 5, 7,19 find the standard deviation for this sample show work

A:

Q: A college placement office sent a questionnaire to a sample of business school graduates requesting…

A: We know that variance is a measure of how distorted a data set is. It is calculated by the average…

Q: In a sample of 30 students of the Academy, we obtained the following data which represents the…

A: Measure of Central tendency are Mean, Median and mode.  The mean is the most frequently used and the…

Q: Compute for Range, Standard Deviation, and Coefficient of Variation 54, 56, 56, 79, 64, 66, 49, 35,…

A:

Q: Listed below are measured amounts of caffeine obtained in one can from each of 14 brands. Find the…

A:

Q: Suppose the profit margins for eight big companies are 14 %, 9 %, 8 %, 10 %, 12 %, 5 %, 7 %, and 6…

A: Formula : sample variance :

Q: Twenty-five fast-food restaurant hourly employees were surveyed to see how many hours they worked…

A: Given Information: Sample size n=25 Population standard deviation σ=5 Confidence level = 98% = 0.98…

Q: The manager of Microsoft wants to study the # of hours per week employees spend at their desktop…

A: That is, there is no evidence to conclude that there is a difference in the mean number of hours…

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 63.6 inches. Assume σ=2.5…

A: Given Information: The height of women ages​ 20-29 is normally​ distributed, with a mean of μ=63.6…

Q: Do twenty-year-olds have fewer cavities? The data show the results of a survey of 16…

A: Given : Claim : The population mean number of cavities for twenty-year-olds is less than 4.

Q: The number of items rejected daily by a manufacturer because of defects for the last 30 days are:…

A: The question is about frequency distribution of data Given :

Q: The pulse rates in bpm of a random sample of ten male 200 Level Nursing students of ABU Zaria are…

A: The test hypothesis are, H0: μ = 72 H1: μ ≠ 72. This is two-tailed test. We reject the null…

Q: 22, 33, 44, 55, 23, 34, 45, 56, 20, 30, 40, 50 Test the hypothesis that the population variance are…

A:

Q: How do I find the variance for a sample of 15Numbers given are…

A: Here a sample of 14 data points are given it was mentioned as 15 in question. We need to compute the…

Q: The most recent data from SKYCTC shows that 76% of MAT150 students pass with a C or higher (using…

A: (a)The sampling distribution of sample proportion is N~(µp^,σp^)The mean and standard deviation is,

Q: 12,15,6,3,7,9,8,4,14,19,18,16,13,15,14,12,15,5 find sample standard deviation for given data

A:

Q: Help  Curvey two different groups of at least 10 people each.  It has to be a quantitave type of…

A:

Q: A corporation that maintains a large fleet of company cars for the use of its sales staff is…

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

Q: A researcher wishes to estimate the mean resting heart rate for long-distance runners. A random…

A: Let x denotes he resting heart rate for long-distance runners

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 64.8 inches. Assume σ=2.7…

A: Given Data Population Mean,μ = 64.8 Population Standard Deviation,σ = 2.7

Q: The marks scored by 25 students in a Statistics examination is shown below 59, 76, 66, 52, 75, 68,…

A:

Q: The marks scored by 25 students in a Statistics examination is shown below 59, 76, 66, 52, 75, 68,…

A: given marks scored by 25 students  59, 76, 66, 52, 75, 68, 65, 74, 80, 72, 61, 50, 70, 70, 75, 62,…

Q: Suppose your teacher gave a quiz and the scores of 28 students in your Psychological Statistics…

A: The range is calculated by subtracting the maximum and minimum values. The mean is calculated by…

Q: tudents of malaya intregrated high school has a mean of 12.45,what is the mean of the sampling…

A: Given, μ=12.45

Q: The  marks obtained out of 45 by 20 students of a class in the prelim exam are given below: 33, 40,…

A: The given data is: 33, 40, 17, 8, 29, 11, 21, 3, 16, 44, 11, 23, 10, 9, 37, 37, 25, 41, 20, 3

Q: FIND THE MEAN,MEDIAN,MODE,RANGE,VARIANCE AND SD OF THE FOLLOWING GORUP OF DATA   1. Aptitude test…

A: Data  85,90,83,79,80,90 Note: According to Bartleby expert can solve only one question and rest can…

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 63.6 inches. Assume σ=2.6…

A:

Q: The observation values for a random sample with a sample volume of 19 are as follows. X: 18, 11, 17,…

A: Given data: X: 18, 11, 17, 11, 13, 12, 19, 19, 10, 13, 12, 21, 19, 18, 17, 13, 11, 20, 22

Q: Compute for Quartile Deviation, Variance, and Coefficient of Variation 12, 24, 25, 25, 19, 19, 24,…

A:

Q: for givendata   2.12,3.45,6.15,2.54,1.23,5.02,4.05,5.20,3.25,4.25

A: The given data is 1.23, 2.12, 2.54, 3.25, 3.45, 4.05, 4.25, 5.02, 5.20, 6.15

Q: A survey was carried out in 30 households in which they were asked the number of individuals who…

A:

Q: Students from TarlacElementarySchool got scores of91, 91, 99, 94, 94, 92, 93, 92, 94, 95, 89, 92,99,…

A:

Q: How do the deviations compare for the single coin toss between the group and the class data? What…

A: Given information: Assume the data of single coin toss and double coin toss.

Q: 27,25,20,15,30,34,28,25 Compute "Mean" and Standard Deviation of it.

A: Formula : Mean = x̄=Σx/n sample variance :

Q: The maximum temperature, in degrees Fahrenheit, recorded in eight (8) specific states of the United…

A: We have given that,  The data set,  102, 105, 117, 120, 124, 118, 105, and 111 Then,  We will find…

Q: A survey was conducted among the employees of a certain company and they were asked about their…

A: Given data(x),(no. of observation (n)=20) 120, 85, 94, 67, 112, 88, 92, 110, 125, 70, 83, 90, 84,…

Q: If the population of ABM students of Malaya Integrated High School has a mean of 12.45, what is the…

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

Q: Construct frequency distribution table based on the scores of 75 randomly selected students.

A: A frequency distribution of a data variable is a summary of occurrence in a collection of non-…

Q: An instructor in a statistics course set a final ex nation and also required the students to do a…

A: Given, Let X = Examination Y= project Examination Project 81 76 62 71 74 69 78 76 93 87…

Q: A college placement office sent a questionnaire to a sample of business school graduates requesting…

A: mean x=sum of observation total number of observation =∑xin variance σ2 =∑(xi-x)2n-1

Q: The length of fish were measured at 3 different lakes.  Is there evidence to suggest that the…

A: Given data: The length of fish were measured at 3 different lakes.  Lake 1 Lake 2 Lake 3 3.5…

Q: Compute the mean weight of a sample of seven chickens selected at random from a large poultry. the…

A:

Q: The numbers of incorrect answers on a true-false test for 15 students were recorded as follows: 2,…

A:

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 64.9 inches. Assume σ=2.4…

A:

Q: Create a Frequency Distribution Table and compute for the Mean, Median, Mode, Variance, and Standard…

A: Frequency distribution table is the tabular or graphical representation of the data set that…

Q: Compute the mean of the following population values: 5, 7, 6, 5, 5. The mean is

A: Mean value is the average value of a data set. The average or mean for a population is computed by…

Q: 6. If a student has taken ten exams in five different courses. The scores on the ten exams were 100,…

A: Arrange the marks in increasing order 51, 60 ,71, 71, 73, 78, 81, 94, 96, 100 Mean =(sum of all…

Q: t a large university, 68% of the students have a laptop, while only 43% of professors have one. Let…

A: A two proportion  z-test allows you to compare two proportions to see if they are the same. The null…

Q: The American Water Works Association reports that, The average household water usage is more than 10…

A: GivenSample size n=12 The data of usage of water among 12 household is shown below74, 8, 13, 17, 13,…