1. A survey was conducted to determine whether educational background is related to teaching efficiency. In a certain college, 95 faculty members were taken and the results are shown below. Efficiency Not Educational Very Effective Background Effective Effective Bachelor's Degree 10 23 7 Master's Degree 16 10 8 Ph. D. 10 6 5 Based on the above data, can we say that teaching efficiency is related to educa- tional background?

Q: In the context of two way chi square, variables are independent or not associated if what?

A: Chi-square test for independence: This statistical test is used for a large number of samples. It is…

Q: Different dogs were provided drug treatments to reduce the number of fleas that infest the pets. The…

A: The question is based on a one way ANOVA Given :

Q: The probability of success in the C.A. examination is 20%. If 20 batches of 5 students each take the…

A:

Q: You used SS, (x-x)2 when calculating variance and standard deviation. An alternative formula for the…

A: Given data is19,14,20,18,14,20,14,20,16,17,15,15,18,17,16,16,16,23,14,16sample size(n)=20

Q: #6 The director of research and development is testing a new drug. She wants to know if there is…

A:

Q: 4) a. A few mechanics on a Toyota showroom identified that they attend an average of (B+ A) cars per…

A: Formula :

Q: 3. A simple random sample of 36 employees in large manufacturing company yields an average length of…

A: The provided information is  x¯=8s=5n=36The degrees of frredom is df=n-1=36-1=35 a.The critical…

Q: Below are descriptions of nine variables. Select the THREE options that are interval scale…

A:

Q: What is an appropriate statistic to use for whether race/ethnicity (white, person of color) affects…

A: Test is that whether race/ethnicity affects whether or not people feel safe in their neighborhood.

Q: Direction: Make a grouped FDT of the ungrouped FDT. Write your answers in your. answer sheet.

A: Grouped Frequency distribution table (FDT)                                          To construct a…

Q: a) Sara deposited RM2,800 in an account when she was 15 years old. The simple interest rate offered…

A: Given problem Given that   a) Sara deposited RM2,800 in an account when she was 15 years old.…

Q: Use the table of standard normal probabilities to determine the proportion of the norm- curve that…

A: a. The standard normal variable is z, which follows the normal distribution with the mean of 0 and…

Q: L.Direction: Write the letter that corresponds to the correct answer. 1. Data collected using…

A: For the given mcq's , we need to choose the correct option.

Q: Calculate the sum of squares of experimental error. Please round your answer to two decimal places

A: Sum of squares of treatment  SS(treatment)=MS(treatment)/DF                           =1002.89/4…

Q: Q2: For the raw data shown in Table below: 1) Find out which of the x₁ or x₂ variables is better…

A: For the given data, we need to find: 1. Which Correlation coefficient is better correlated with y 2.…

Q: Qil Given ap. d. f f(x) = { ex Find Mx (t) for x>0 Ex) ⒸV(x)

A:

Q: The correlation between the price indices of animal feeding-stuffs and home-grown cats in a sample…

A:

Q: Compute the value of F statistic value of between groups using the following ANOVA table: Source of…

A: ANOVA: ANOVA is used for test the significance of the difference between more than two sample means.…

Q: Data Management - Statisitcal Analysis Describe each graph seperately. Explain the type of graph…

A: A careful inspection of the side-by-side bar plot reveals that there is a greater number of Covid…

Q: Data Management - Statisitcal Analysis Describe each graph seperately. Explain the type of graph…

A: Graphs are visual representation of statistical data.

Q: CANCHASING A poll of 640 potential voters finds that 256 intend to vote for a particular candidate.…

A: Given n=640 X=256

Q: 2. One restaurant is known to have an average daily sales of $1100 and $90 variance. If a 31-day…

A: Given Population mean μ=1100, variance σ2=90, n=sample size=31, sample variance s2=105

Q: 2. A group of students working on their thesis took a random sample of 100 families in a certain…

A: Given Sample size=100, sample mean x̄=1146, sample standard deviations s=650  Construct 90% CI for…

Q: Let X₁,..., Xn be iid Poisson(A), and let λ have a gamma(a, 3) distribution, the conjugate family…

A:

Q: Suppose a large labor union wishes to estimate the mean number of hours per month a union member is…

A: Please see below

Q: How many cells does a bivariate table have with three categories

A: Given that  How many cells does a bivariate table have with three categories?

Q: You run a regression analysis on a bivariate set of 43). With = 76.3 and y = 56.3, you obtain the…

A:

Q: The producer of a certain medicine claims that their bottling equipment is very accurate and that…

A:

Q: 3.1 In a study, serum cholesterol levels were measured for a large number of healthy males. The…

A: The mean serum cholesterol level for those who developed CHD (μd)=244 The sd of serum cholesterol…

Q: A genetics experiment involves a population of fruit flies consisting of 2 males named Alex and Bart…

A:

Q: If 50% of a population take coeffeee and 100 investigators examine 10 individuals each to study…

A:

Q: Each year the proportion of named storms that make landfall in the United States is calculated.…

A: Based on this, the proportion of named storms that make landfall in the United States is comes under…

Q: What would it be for the histogram box?

A: Graphs are used to represent the data in visual form. Each graph used for different purposes and…

Q: In a recent poll of 755 randomly selected adults, 586 said that it is morally wrong to not report…

A: Given that, Z= 4.57  and  Critical values = + 2.576 and -2.576

Q: A manufacturer claims that the mean lifetime, μ, of its light bulbs is 47 months. The standard…

A: From the provided information, Sample size (n) = 13 Sample mean (x̄) = 49 Population standard…

Q: The mayor of a town has proposed a plan for the construction of a new community. A political study…

A: The provided information is n=900 p^=0.59α=0.10 step 1.The null and alternative hypothesis…

Q: fo 뉴- 토욜 하블 4+0 X = 2 (-1,4] find MLE (0) GE | + 旦22 0 + ㅈㅈ =-2 7= 1 1

A:

Q: On November 2, 2014, a Gallup poll reported that 51 percent of Americans support legalizing…

A: It is unclear whether more people support marijuana legalization than oppose it.

Q: If fx₁x₂ (x₁, x₂) is a joint density function, then find the joint density function of Y, and Y₂

A:

Q: 14. A researcher collected data from a sample that she chose and she wishes to understand the…

A: According to our policy we can answer only first three part for remaining please repost the…

Q: Number of siblings” within a sample of people is an example of a ________ variable.

A: A Discrete random variable is a variable that takes discrete values. Discrete values are countable…

Q: The test statistic of z = 1.17 is obtained when testing the claim that p # 0.638. a. Identify the…

A: Given that

Q: Example 11.7 A firm manufacturing steel furniture desires to estimate the proportion of the…

A:

Q: a) Find the number of customers in this sample who had waist sizes from 30-36 inches. b) Is this…

A:

Q: Suppose i want to use weight as the predictor variable for the Horseshoe crab data set in order to…

A: c) Null Hypothesis: H0: The weight effect is not significant. Alternative Hypothesis: H1: The weight…

Q: Data Management - Statisitcal Analysis Describe each graph seperately. Explain the type of graph…

A: Line chart is a visual representation of data points connected by a line over a time period.

Q: Data Management - Statisitcal Analysis Describe the graph  Explain the type of graph with…

A: Line chart is a type of graph that is used to study pattern/trend across a time period or classes.

Q: When selecting measures of association and the two variables of interest are measured at different…

A: measure of association, in statistics, any of various factors or coefficients used to quantify a…

Q: Example 11.5 A firm has appointed a large number of dealers all over the country to sell its…

A: