Two companies produce widgets of varying quality. An important measure of quality is the number of days the widgets can go before they need to be replaced. Do the following data provide evidence that the quality of widgets from the two companies differ? Round the p-value to three decimal places. Do not assume equal variances.   Widget Life in Days from Company 1 Widget Life in Days from Company 2 12.0 52.2 14.0 45.8 48.4 44.6 47.0 57.5 50.4 44.2 57.4 50.8 30.8   43.0   30.0

Q: Remove outliers, missing values and rescale the data.

A: Given information: The data represents the values of the variables X1 and X2.

Q: Lieutenant Dan, a personal trainer, was interested in whether or not there was a linear relationship…

A: The relationship between the independent and dependent variable is known as cause and effect…

Q: PROBLEM SOLVING. Use Excel to answer the following questions. The following data set shows the…

A: The following data has been provided: Advertising Cost (x) Sales(Y) 40 385 20 400 25 395…

Q: The question is which box plot has the greatest variability and which box plot has the least…

A: Basics of a boxplot:A boxplot is based on the 5-number summary: (Minimum, Q1, Median, Q3, Maximum);…

Q: Remove outliers, missing values and rescale the data.

A: Given information: The data represents the values of the variables X1 and X2.

Q: The top schools HCC students transfer to are below from highest to lowest.  This type of data is…

A: We have given the following statement

Q: The term correlation refers to a statistical technique that is used to ____.​   a. ​measure the…

A: The given term is correlation.

Q: 3. Classify the following examples of data as either true or false: b. Number of blue whales sighted…

A: A data, can be expressed in terms of numerical value.

Q: Use a calculator to make a box plot for the following data set. In the first box type: v=…

A: The boxplot is:

Q: 3) (20) For the dataset below, do a complete box-and-line plot analysis. 3 15 18 19 23 23 26 27 28…

A: Given data: n=11   Q1=14×(n+1)th term=14×12=3rd term=18 Quartile 1 is 18   Q2=12×(n+1)th…

Q: The ages​ (in years) and heights​ (in inches) of all pitchers for a baseball team are listed. Find…

A: Given : The ages​ (in years) and heights​ (in inches) of all pitchers for a baseball team are listed…

Q: mode can be more than one in a data set but medium cannot.explain in two lines.

A: Mode: Mode is the most frequent observation in the data set. So, it is possible to have more than…

Q: The scatter plot shows the time spent watching TV and the time spent doing homework by each of 24…

A: The drop down options in the question are not visible, so we will write the most appropriate…

Q: Consider the table below describing a data set of folks who have registered to volunteer at a public…

A: The variable is name.

Q: The side-by-side dotplot below displays the arm spans, in centimeters, for two classes. Which…

A: Stem and leaf is the graphical representation of the data. Here we divide the data into two parts…

Q: The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the…

A:

Q: In a study of looking at the amount of white blood cells and if they jag increased for HIV patients,…

A: In order to establish or study any relation between x and y variables whether they are related or…

Q: The owner of Showtime Movie Theaters, Inc., would like to predict weekly gross revenue as a function…

A: Weekly Gross RevenueTelevision AdvertisingNewspaper…

Q: a) Find the population mean and the range for the number of smallmouth bass caught per day by each…

A:

Q: Actuaries use various parameters when evaluating the for the evaluation. Each year, the actuaries at…

A: Given that  Sample size n1=20 , n2=20 Sample variance s12=42.3 s22=47.6

Q: Which is the best description of the data in the scatter diagram? Negative association; the…

A: The scatter diagram graph pairs of numerical data, with one variable on each axis to find a…

Q: Derek Jeter's career batting average of 0.310. Is this an example of a statistic or parameter

A: Given: Derek Jeter's career batting average of 0.310. is this an example of a statistic or…

Q: Find the variance for the set of data: 27, 33, 20, 25, 25. The variance is ***

A: Solution: x x2 27 729 33 1089 20 400 25 625 25 625 --- --- ∑x =130 ∑x2 =34685

Q: 4. Drawa scatterplot for the following data: Variable X 24 Variable Y 44 13 8 81 63 36 5 52 42 5 1…

A: Let X and Y denotes the random variable  We have to plot scatter plot using data X and Y :

Q: Mark wants to know whether the average amount of television viewing differs based on students’ grade…

A: dependent variable and independent variables

Q: A     marketing     manager     conducted     a     study     to     determine     the…

A:

Q: What are the units of the correlation coefficient for these data?

A: Here given ,  Tail-feather length in birds is sometimes a sexually dimorphic trait. That is, the…

Q: Based on the data below, answer the following question: Draw a scatter diagram that highlights the…

A: Correlation coefficient quantifies the strength and direction of relationship between variable. The…

Q: Accu-Copiers, Inc., sells and services the Accu-500 copying machine. As part of its standard service…

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

Q: Which measure of central location is meaningful when the data are nominal? A. The mode B. The…

A: We want to tell you which one is the correct choice.

Q: gives applicants represent simple random samples of men and women who apply for these jobs. Complete…

A: A confidence interval is a statistical concept used to estimate an interval within which a…

Q: .Which one of the following best describes the strength of the relationship between two variables?…

A: Solution-: Which one of the following best describes the strength of the relationship between two…