A data set contains three points, and two of the residuals are -10 and -20. What is the third residual?
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Q: What percent of data is less than -8%
A: here we can see that shape of curve is bell shaped and symmetric about x = -6 so it is normal…
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A:
Q: The variance of the data :. 6 ,6 ,-6,-6 is equal to
A: Find variance of the data 6 ,6 ,-6,-6
Q: Police Department A and Department B each use the same set of data about the number of safety…
A: Given that Department A calculates an interval of 12% to 15%, Department B calculates an interval…
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: Illustrate the Test R2 for significance?
A: Coefficient of determination: The coefficient of determination (r2) is the percentage of total…
Q: Heights of NBA All-Star players are normally distributed. 97.5% of players have a height of 85…
A:
Q: The researcher wants to know if exercising before watching a play causes people to show more…
A: The researcher picks participants from the exercise group or the control condition. Explanation:…
Q: What does it mean to say that two variables are positively associated? Negatively associated?
A: Association: The association of how two varaibles are connected with each other. It decides how one…
Q: You are the Provost of a University and you want to see if students would like to participate in…
A: Sex is best categorized as a nominal variable Weight is best categorized as a continuous variable,…
Q: Why do you think it is important for a researcher to do a background research to the chosen…
A: It generally supports the question, what did we know about this topic before I did this study?…
Q: How will statistics play a part in a health provider's career?
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Q: What is Multiple Comparisons?
A: In statistics and probability theory, Multiple Comparisons (also known as multiplicity or multiple…
Q: r2 = .672 can be interpreted as 67.2% of the variance. Group of answer choices True False
A: Coefficient of determination: The coefficient of determination tells about the percent of variance…
Q: the variance of a data set is 144 and mean is 72 then coefficient of variance is
A: Given,variance(σ2)=144mean(x¯)=72
Q: Find the variance of X X: 73,51,73,182,45,90,111
A:
Q: The variable personal desire for aggressive treatment is?
A: Aggression is a typical mental illness. This can be caused because of emotional instability due to…
Q: What is the difference between an individual and a variable?
A: Step 1: In a study, an individual is a subject that is included in the study. On the other hand, a…
Q: How to interpret scatterplots Positive, Negative, or little or No Relationship?
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Q: Give an example of a. univariate data. b. bivariate data.
A: There are two types of data: Univariate data Bivariate data
Q: What is the mean of the data set comprising the numbers 7, 8, 4, 5 and 11
A: Data set: 7, 8, 4, 5 and 11 Number of observations = 5
Q: Describe the four cases of the Leading Coefficient Test.
A: Let given polynomial function is fx=anxn+an-1xn-1+an-2xn-2+......+a2x+a1x+a0 The graph of given…
Q: You are doing a one way analysis of variance on the fuel consumption of different makes of cars. You…
A: Solution: From the given information, total number of cars is 43 and the number of treatments is 6.…
Q: Find the z-score that corresponds to the 63rd percentile
A: we have to find the Z-score that corresponds tothe 63rd percentile.
Q: The rows of data set represent observations true of false
A: We know that, if there is a dataset then A row represents the observation whereas The column…
Q: How do i calculate finding the percentage between two z scores?
A: To find the probability between two z-scores: z-score represents the number of standard deviations…
Q: what is the z score of 128,101,116,119,131 when the mean is 119 and variance is 36
A: It is given that Mean, μ = 119 Variance, σ2 = 36 Standard deviation, σ = 6 Z-Score, Z = ( X - μ )/σ
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: Describe when you would use an analysis of variance versus an independent samples t-test.
A: Analysis of variance (ANOVA) is used when we have more than two independent samples whereas…
Q: The variables are the columns of a dataset.
A: Here we want to know given statement is true or false.
Q: How can two variables be displayed in a scattergram?
A: A scatterplot is a type of display of data that shows the relationship between two numerical…
Q: The variance is sometimes a negative number.
A:
Q: How do you explain the variables of a histogram?
A: Histogram is a visual representation by showing the frequency of data that fall within a specified…
Q: Draw a scatter diagram for the data. Plot the least-squares line on your scatter diagram.
A: Given: Let x be the age of a bighorn sheep (in years), and let y be the mortality rate (percent that…
Q: the value of so that 92.3% of the data lies to the right of
A:
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- A drug company claims that an allergy medication causes headaches in 5% of those who take it.A medical researcher believes that more than 5% of those who take the drug actually get headaches. Identify the population(s): All individuals who take the medication. The proportion of those who take the drug who get a headache. What is the variable being examined for individuals in the population(s)? Whether or not an individual who does not take the drug gets a headache. Whether or not an individual takes the correct dosage of the drug. Whether or not an individual who takes the drug gets a headache. Is it categorical or quantitative? [Proportions are Categorical. Mean values are Quantitative.] Categorical Quantitative Identify the parameter(s): The proportion of those who take the drug who get a headache. The mean amount of medication taken. The number individuals who take the medication. What kind of hypotheisis test is this? 1 population mean 2 population means 2…Destiny wants to know whether gender predicts depressive symptoms in patients with heart disease. She assesses the number of depressive symptoms experienced by a large sample of patients and finds that the data on depressive symptoms are positively skewed. Which assumption of a single-sample z test has Destiny most likely violated?why do you think the data presented this way?
- In 2016 the Better Business Bureau settled 84% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.84, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(p) (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion (to 4 decimals)? probability : = c. Suppose you select a sample of 460 complaints involving new car dealers. Show the sampling distribution of p. E(F) (to 2…Your Statistics instructor wants to determine whether students who have previously taken an online course earn higher grades than students who have NOT taken an online course prior to taking the Statistics course. In this example, what is the response variable?Why does the use of multiple t tests increases?