The interquartile range is preferable than the variance since there are negative data values The variance can still be used to measure dispersion even though some values are negative. None of the suggested answers are correct The interquartile range is negative since there are negative data values The variance should not be used as a measure of dispersion since it is supposed to be positive but there are more negative data values than positive.

Q: One way analysis of variance is used to test for

A: One way analysis of variance also known as ANOVA.

Q: Given this already solved problem, how could you determine whether homogeneity of variance is…

A: The hypothesis for the homogenity of variances is H0 : σ12=σ22       againstH1 : σ12≠σ22 Adding the…

Q: A distribution of sample means with scores of 35 were taken from a skewed population. The…

A: According to central limit theorem, for large sample (>30) or if the population follows normal…

Q: age Valid 134 Missing Std. Deviation 5.173 Variance 26.764 Range 35 Percentiles 25 20.00 50 22.00 75…

A: Given : variance = 26.764

Q: Aside from looking at how high or how low the class standings are, Prof. Juan is also inte knowing…

A: Null Hypothesis: H0: The true variance is not less than 100. Alternative Hypothesis: H1: The true…

Q: The normal variance for filling a liter Coke bottle is 0.5 ounces. In a recent measurement, the…

A: The variance tell us about the spread of data about the mean, larger the variance means the data is…

Q: Most engaged couples expect or at least hope that they will have high levels of marital…

A: Given: n1=39x¯1=51.1s1=9n2=31x¯2=45.2s2=12α= 0.05 The test hypothesis are, H0: μcouples living above…

Q: If you are told that a data set has a mean of 25 and a variance of 0, you can conclude. there is…

A: We want to tell that a data set has a mean of 25 and a variance of 0, you can conclude.

Q: A population of marine gastropods has shell lengths that are normally distributed with a mean of 7…

A: We have to find given probability.

Q: The analysis of variance methodology will show that there really is a difference between the means…

A: When the between-group variance is significantly larger than the within-group variance, then there…

Q: If the Mean of a data set is 700 and the Variance is 49; Calculate the intervals used for the…

A: Given information, Mean of a data set = 700 Variance = 49 We have to calculate intervals using…

Q: The adjusted r2 of the systolic blood pressure (SBP) in relation to whole blood cadmium (Cd) and…

A: Adjusted R square: It explains the fitness of data in a line or curve and it adjust the term in the…

Q: The coefficient determination indicates: the scores of each case in a sample simultaneously on two…

A: We have to find corrcet answer.

Q: Distinguish Conditional Variance from Conditional Mean

A: Conditional Expectation: The conditional expectation or conditional mean of  random variable is the…

Q: For all of the variability calculations we have done (including range, sum of squares, variance, and…

A: Solution-: For all of the variability calculations we have done (including range, sum of squares,…

Q: The weight distribution of 100 NSU students is normally distribution with mean 70 kg and variance 2…

A: Given that mean is 70 kg and variance is 2 kg. That is,  μ=70σ2=2 i) Consider,…

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: one: Inconsistent, the standard deviation equals than the mean. . Consistent , Inconsistent, the…

A: Inconsistent, the standard deviation equal than the mean.

Q: The total cost for a production process is equal to $1,000 plus two times the number of units…

A: Given Information: The total cost for a production process is equal to $1,000 plus two times the…

Q: To improve driver safety, Federal government is always encouraging states to lower the variance of…

A: Given: n = 16            S1 = 32  & S2 = 16     To test whether the variance of stopping…

Q: Aside from looking at how high or how low the class standings are, Prof. Juan is also interested in…

A: Given: Using the chi-squared test for variance with a p-value equal to 2.095e-12.

Q: A sample of 46 observations gave sample mean 20 and coefficient of variation 0.6 Then the sample…

A: Given  n=46, Xbar=20, CV=0.6

Q: MicroSwift has designed a new operating system that will revolutionize the computing industry. The…

A:

Q: The variance caused by random, unsystematic differences is called _____.

A: This is the concept of ANOVA

Q: The average cost of food delivered by Talabat is 20 Oman Rials per delivery. The variance of the…

A: Given: Cost of food = X average of X = 20 Oman Rials Variance of X = 16 Oman Rials Standard…

Q: Students often incorrectly use the term "bias" to describe anything that is wrong with a research…

A: Sampling Bias and the presence of a Confounding Variable are two different problems for research,…

Q: In swimming, clearly you would like to swim fast, but swimming consistent times is also important. A…

A: Formula : Test statistic :

Q: _________ is the best measure of central tendency you can use for continuous data that is skewed

A: Given that, The distribution is skewed.

Q: The length of 100 movies was recorded and the standard deviation was computed. This would be a:…

A: We have given that The length of 100 movies was recorded and the standard deviation was computed

Q: Battery life is an important issue for many smartphone owners. Public health studies have examined…

A: From the given information,

Q: The nation of Olecarl, located in the South Pacific, has asked you to analyze international trade…

A: Balance of trade  is the difference between the total revenue from exports and total costs of…

Q: what test is used to determine whether two population means are different when the variance are…

A: The test that is used to determine if the two population means are different when the population…

Q: If the sum of differences between values and its mean equal the variance of these values is equal to…

A: Variance is the mean of the squares of the deviations of the values of the data set from their mean.…

Q: For an analysis of variance, "two-way" refers to the direction that traffic should follow on the…

A: In this case, we need to identify the correct option for the given statement.

Q: The average number of newspapers for sale in an airport newsstand is 12, and the variance is 25. The…

A: We have given that  Average and variance for newspapers.  Average = 12 Variance = 25 Standard…

Q: If no data values are given but the mean and standard deviation is given how do I find the variance…

A: The formula for the variance and standard deviations are,

Q: A clinical trial for a psychological therapy for trauma takes 37 women and gives them one treatment…

A: Since this is the case of Paired Data

Q: A large public school system was evaluating its elementary school reading program. In particular,…

A: Given Information: Sample size n=25 Sample mean x¯=70.571 Sample standard deviation s=9.537. This…

Q: The dependent is variance inflation factor, make a decision whether it need to drop any variables.

A: Given information: The output of multiple linear regression model is given.

Q: suppose the number of off springs a female eagle raises during its lifetime has a disturibution mean…

A: Let X be the number of off springs a female eagle raises during its lifetime, that has µ=14 and…

Q: It is widely claimed that a histogram is skewed to the left when the median is greater than the mean…

A: Relationship between mean and median: The value of mean is equal to the median when the…

Q: Suppose that a journal article reports that the mean age at marriage of Filipino women is 22.6 years…

A: Given Data : For Sample 1 x̄1 = 22.6 σ1 = √7.2 = 2.6833 n1 = 150 For…

Q: We are running a hypothesis test to see if blood pressure of African zebras differs significantly…

A: It is an important part of statistics. It is widely used.

Q: On a recent math test, the boys in Mr. Wadsworth's class seemed to have outscored the girls. The…

A:

Q: students who take a certain mathematics test are normally distributed with mean 75 and variance 36.…

A: From provided information, The claim that students in current year are not typical. The hypotheses…

Q: If the mean of grades in statistics = 65 and the variance : 400 , then the Z score of grade 50 =

A:

Q: The mean and variance of marks of BSCS Section A are 62 and 16 respectively and that of BSSE Section…

A: Given, Section A mean,X1¯=16variance= 62standard devaition = variance=4sample size,n1=30 Section B…

Q: Mean and variance of marks of BSCS Section A are 62 and 16 respectively and that of BSSE Section B…

A: Given, BSCS section A: mean=62 variance=16 n=30 BSSE section B: mean=69 variance=25 n=40

Q: Suppose it is believed that the probability a patient will recover from a disease following…

A:

Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.