Directions: Answer the following questions. 1. In 50 items test, Miss Santos, a mathematics teacher claimed that most of the students' scores lie closer to 40. In this situation, is score of 40 considered as Variance or Expected Value (Mean)? Explain your answer. 2. Describe briefly the variance of a discrete random variable.

Q: Briefly discuss the difference between quantitative and qualitative random variables, giving…

A: Quantitative Variable: The variable whose values are countable or measuring the values. Quantitative…

Q: A- Explain the following • Random Experiments. • The Variance of data. Bayes' Theorem.

A: 1. Random Experiments: A Random Experiment is an experiment, trial, or observation that can be…

Q: Anyone who has been outdoors on a summer evening has probably heard crickets. Did you know that it…

A: The provided data is,

Q: A newspaper sometimes makes printing error in its advertising and is forced to corrected advertising…

A: Compute the mean of the error made in advertising. From the information, given that the probability…

Q: -Study and analyze ne number of shoes sold per day at a retail store is shown in the table below.…

A: Given that  X 19 20 21 22 23 P(X) 0.4 0.2 0.2 0.1 0.1 Mean = E(X)=∑X.P(X) Var(X)=E(X2) -…

Q: A. What is the pooled variance? (Hint: you must first find the variance for each Group.) B. What is…

A: Given that: Group A Group B 12 10 10 9 7 4 7 3 8 5 5 4 n = n1 = n2 = 6

Q: An operation manager at an electronics company wants to test their amplifiers. The design engineer…

A:

Q: What are the values for SS and variance for the following sample of n = 4 scores? Scores: 1, 3, 0, 4

A: Calculate Sample Variance (S^2), Sample Standard deviation (S) from the following…

Q: 3. Rish Florist determines the probabilities for the number of flower arrangements they deliver each…

A: Let X be the random variable having probability distribution is,  X 6 7 8 9 10 P(x)  0.2 0.2…

Q: Question: The number of cars passing through a country road intersection can be modelled by a…

A: Given A rate of 2 cars per minuteFor 10 minutesλ=2×10=20 carsLet "x" be the no.of cars that pass…

Q: Previous question Fill in the four (4) blanks in the following sentence: In an ANOVA test, a small_…

A:

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

A: Given data,n=125p=0.23Find the​ mean, variance, and standard deviation of the binomial distribution…

Q: r the data above, what is the pooled variance? (Hint: you must first find the variance for each )

A: Given : For  group A given data : 12,10,7,7,8,5

Q: On average, how many spectators will attend? Determine the variance and standard deviation for the…

A: given: weather no: of people probability good 100000 60% fair 70000 30% bad 30000 10% to…

Q: Monthly electric bills of householders in Muscat are normally distributed with a mean of OMR 25 and…

A: Let X denote the monthly electric bills of households in muscat and it follows normal distribution…

Q: An independent-measures research study with n = 5 participants in each treatment produces sample…

A: It is given that (x1bar – x2bar) = 2.The sample variances of first and second samples are 8 and 10…

Q: Answer the following multiple choice questions. You must show some relavent work and/or explanation…

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

Q: Merger Explain why the facts you know about variancesof independent random variables might encourage…

A: Generally, it is known that small insurance companies may go for risk in the business. The expected…

Q: he Analysis of Variance (ANOVA) is a statistical procedure of comparing the ______ of more than two…

A:

Q: You have the following forecast about a stock's return Probability 50% 10% 15% 15% 10% Return -20%…

A:

Q: a. What kind of statistical test is this? b. Is Levene's test for homogeneity of variances…

A: Hi there! Since there are multiple subparts we have solved first three parts for you. To get…

Q: A simple analysis of variance is used to study participants who are tested: A) Twice or more B) Only…

A: The correct option is B. Only once

Q: the pairwise multiple comparison is conducted through? a. equality of variances b. correlation c.…

A: The objective is to find the correct option from the given choices.

Q: alculate (by hand) sample variance (SD2) and sample standard deviation (SD) of the distribution:…

A: The given data is 6, 8, 39, 36, 2, 36, 2, 20

Q: In a condition of an experiment, a researcher obtains the following creativity scores:3 2 1 0 7 4 8…

A: Given that,3 2 1 0 7 4 8 6 6 4

Q: 3) Number of Probability, speeches, P(x) 0.06 1. 0.42 0.22 0.12 0.15 0.03 Mean = Variance= Standard…

A: 3) The probability distribution table is given for number of speeches.

Q: What are the big corporations doing with their wealth? One way to answer this question is to examine…

A: Measured of dispersion measures the spread of the data. Standard deviation and variance are 2…

Q: What's More Independent Activity 1: Study and analyze The number of shoes sold per day at a retail…

A:

Q: Solve the following problems. Use the steps in conducting hypothesis tests. Two cyclists are…

A:

Q: 2. You have following observations -1.5, 2.6, 1.2, -2.1, 0.1, 0.9. Find a sample mean, a = variance,…

A: x (x-xbar)^2 -1.5 2.89 2.6 5.76 1.2 1 -2.1 5.29 0.1 0.01 0.9 0.49

Q: You are comparing the means of two unrelated samples, A dan B. You have the following information:…

A:

Q: What are the big corporations doing with their wealth? One way to answer this question is to examine…

A: Measured of dispersion measures the spread of the data. Standard deviation and variance are 2…

Q: Using the information that you have up to this point, which of the following statistical tests…

A: The correct option is t-test: paired: two sample for means

Q: 9.3 3

A: The hypotheses are given below:

Q: An operation manager at an electronics company wants to test their amplifiers. The design engineer…

A: It is given that the mean is 482, the variance is 121.

Q: What are the big corporations doing with their wealth? One way to answer this question is to examine…

A: Given data are appropriate for testing of hypothesis to test z-test for single mean. We need to find…

Q: 1. In a recent poll, the Gallup Organization found that 45% of adult Americans believe that the…

A:

Q: DESA Early Childhood researcher published that 5% of all births by university student’s result in…

A: From the provided information, DESA Early Childhood researcher published that 5% of all births by…

Q: Task 1: Referring on the given data below, compare the examination results in Science subject of the…

A: Use the given data for section A to form the excel table:   Section A x-x x-x2   23 1.90625…

Q: A. 1. Illustrate the mean or expected value. 2. Illustrate the variance and standard deviation. III…

A: Given :

Q: The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium…

A: From the provided information, Population mean (µ) = 21.50 mpg Population standard deviation (σ) =…

Q: Part 2 Q2: Put (True) or (False). Write True or False for six questions from the following question.…

A: The variance of the estimator is inversely proportional to the sample size, So if the sample…

Q: In a condition of an experiment, a researcher obtains the following creativity scores:3 2 1 0 7 4 8…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: You are comparing the means of two unrelated samples, A dan B. You have the following information:…

A: We have find df for test for difference in means.

Q: D. Tell whether the distribution has a small or large variance E. Compute the actual variance and…

A: Answer:-----.                                     Date:----27/09/2021

Q: 4. Base on the graphical representation you made, illustrate for the following: a. mean or expected…

A: We need to find mean , variance and standard deviation

Q: Example The costs per load (in cent) of 20 laundry detergents tested by a consumer organization are…

A: The following table gives the data with the required calculations:

Q: The Sample Variance is ___________________

A: The table of frequency distribution from provided bar plot is: x 1 2 3 4 f 3 2…

Q: (a) What proportion of tests require more than 70 seconds to complete? (b) What proportion of tests…

A: Here use given pdf for probability and mean and Variance

Q: For the following scores: 6, 2, 3, 0, 4 : A)  If these scores are a population, what are the…

A: Use EXCEL Procedure for finding the value of population variance.   Follow the instruction to obtain…