what kind of statistical data might a barglar alarm company employ in trying to convince urdban homeowers to purchase its products

Q: _________are computed to show cause and effect relationships and to test hypotheses and scientific…

A: Causation indicates the relationship between two events where one event causes another event to…

Q: If an observed correlation value is -.45 and the table value for Pearson Correlation is 450 for a…

A: Here, the observed correlation value is -0.45. The table value for Pearson correlation is 0.45.…

Q: What is meant by an influential observation?

A: The definition of an influential observation is give bas follows:

Q: Spencer would like to study how gender and PTSD in veterans impacts risk for dementia. In order to…

A: Here the variables which are being manipulated are Gender and PTSD , while the variable which is…

Q: Is the scatterplot informative?

A: A scatter plot is a diagram that is used to display values for two variables for a set of data. This…

Q: 4. Explain the logic behind the equations for the mean and standard deviation for grouped data,…

A: A low standard deviation indicates that the data point tend to be very close to the mean ;a high…

Q: What  statistical test( from the data)  should be used to check whether people choose each type of…

A: Chi-square goodness of fit test: The Chi-square goodness of fit test is used to test whether or not…

Q: A cereal company claims that the mean weight of cereal in its boxes is more than 14 ounces. Which is…

A:

Q: If a data set is platykurtic, this means that it

A:

Q: What condition on a data set is required to apply the empirical rule?

A: The condition that required to apply the empirical rule is that the shape of the data should be…

Q: Provide an illustration on how Bayesian analysis is used.

A: With the help of mathematical probability, the Bayesian analysis gives an explanation about the…

Q: n the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect call…

A: Given: α=0.05   z% CI or confidence interval means, if we take the measure repeatedly from the…

Q: What does The level of significance spotlights?

A: Level of significance is used in hypothesis testing. It is defined as the Type I error. The symbol…

Q: It is desired to investigate whether there is a relationship between gender and occupational groups.…

A: To examine the strength of association (or) relationship between two variables the following are the…

Q: A professor from the University of Álabama is interested in determining whether or not people from…

A: A t test is used to determine to check whether there is significant difference between means of two…

Q: n Statistics, what kind of graphs are required to present this data? And what other kind of test of…

A: A boxplot is a great option to compare between two or more groups of data based on a five-point…

Q: What test statistics will be used for this problem?

A: Test is that whether there is a color preference in shirts.

Q: What is the explanatory variable ?

A: What is the explanatory variable ?

Q: what is a statistical model

A: A statistical model is process of applying statistical analysis to the given data set and it…

Q: Discuss the measures of central tendencies and the situations in which one is a better…

A: The 3 most common measures of central tendency are the mean, median and mode. 1) Mean: Or we can…

Q: If the errors produced by a forecasting method for 3 observations are +3, +3, and −3, then what is…

A:

Q: You are asked to give a recommendation based on overall cost as to which machine, A or B, along with…

A:

Q: If the difference in means of two data sets is not zero, does that imply that on average the two…

A: In this we need to find whether the difference in means of two data sets is not zero, the does it…

Q: 1. What is the measure of central tendency suitable for summarising the data on ice cream flavours?

A: Given data: What is the measure of central tendency suitable for summarising the data on ice cream…

Q: Suppose you want to study the effectiveness of calculators in College math classrooms by giving…

A: In experimental studies we assign some observation to one group and rest in the other group. After…

Q: Under what research situation would a researcher use a one-tailed test rather than a two-tailed…

A: A two-tailed test is known to be a test carried out to show if the mean of the sample is…

Q: what is the difference between grouped and ungrouped data?

A: Data can be classified as grouped data and ungrouped data.

Q: If the sample size is 30 and the mean score for group one is 5.6, mean score for group two is 7.8,…

A: According to the question,

Q: 11) If “correlation does not imply causation,” What does it imply?

A: Correlation does not imply causation, because causation means one variable causes the other…

Q: Suppose we have the following data collected from three randomly-selected counties 1.How many…

A: Given: Sample size n = 3 Formula Used: Degree of freedom = n-2 Correlation coefficient r =…

Q: What statistical methods are typically used in an inferential study?

A: There are two major parts in Inferential statistics, i. Estimation ii. Hypothesis Testing So, these…

Q: When we comparing the hospitals in our area for seeking a better care, what statistics or data we…

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

Q: Suppose that you want to do statistical significance tests for four correlations and you want your…

A: It is given that the number of correlation is 4 and EWa is 0.05.

Q: If you are conducting a study on the academic performance of students who are registered members of…

A: A quantitative study would be more appropriate for this. This is because both the variables can be…

Q: Suppose that you want to do statistical significance tests for four correlations and you want your…

A: According to the provided information, the number of correlation is 4 and the significance level is…

Q: What is the “third factor” problem concerning correlational studies as it relates to inferring…

A: The correlation between any two variables is the linear relationship between those variables, but it…

Q: What variables do Teczar find have the most significant controlled associations with women in…

A: The correlation is a statistical technique that is used for analyzing the behavior and association…

Q: Differentiate the three measures of central tendency: ungrouped data.

A: The three measures of central tendency are : 1) Mean 2) Median 3) Mode MEAN →The arithmetic mean is…

Q: _________ are used to display actual data points for individual-level data. Would this answer be…

A: Univariate Statistics:Univariate data is that the data information is depends on only one random…

Q: The Tampa Bay (Florida) Area Chamber of Commerce wanted to know whether the mean weekly salary of…

A: There are two independent samples which follows normal distribution. We have to test whether the…

Q: A researcher looks at the mean salaries of male and female electricians and decides based on the…

A: Null hypothesis H0: there is no difference between two groups. Alternative hypothesis H1: there is…

Q: Define the term Penal data?

A: Panel data is useful in mainly econometrics and statistics. It is also called as longitudinal data.…

Q: child and their family were interviewed to assess whether there might be an association between…

A: In case-control studies, the subjects of the study are generally divided into two groups, the “cases…

Q: istributed with mean 50 seconds, and variance 100 nusual diet for three weeks before they were…

A: μ= 50 seconds (population mean) σ2 = 100 sec2 (population variance) n= 75 (sample size) x¯ =46…