Find the variance(2 decimal).

Q: A grocery store manager wants to know if displaying cranberries near the entrance to the store…

A: P1 : Proportion of shoppers who buy Cranberries when they are near the store entrance. P2 :…

Q: A population consists of all the weights of all defensive tackles on a university's football team.…

A: Given data is  Johnson 204 pounds Patrick 215 pounds Junior 207 pounds kendron 212 pounds…

Q: Describe about MEAN SQUARES (M S) AND F RATIOS.

A: Solution : Mean Squares - Mean squares is simply an estimate of population variance that accounts…

Q: What is the formula to find weighted mean.

A: Weighted Mean: A mean in which some values are more important than others.

Q: Calculate the variance using the definitional formula. (Set up a table) X= 6  (M=6) Scores: 3 4 5 6…

A: The variance formula is, Variance=∑iX-M2n-1 The value of ∑iX-M2 is, Scores X-M X-M2 3 -3 9 4…

Q: first principal component captures the highest variance of the data.

A: First Principal Component: Is The line that best accounts for the shape of the point swarm. the…

Q: Find the means, variance, and standard deviation.  Data: 10, 60, 50, 30, 40, 20,25

A: We have given that,  X :- 10, 60, 50, 30, 40, 20, 25 Then,  We will find the Mean, Variance and…

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: Find the mean of weight of cranes in kg. The weight of 6 cranes are 25, 10, 40, 45, 9, 21 in kg.

A: The weights of the cranes are given as 25 kg, 10 kg, 40 kg, 45 kg, 9 kg, 21 kg. These are the data…

Q: A cardiologist wants to determine whether there is a change in blood pressure when her patients are…

A: Given : n=45 , x(sample mean of the differences ) = -2 mmHg ,  s(sample standard deviation) = 0.4…

Q: A food bank investigates if the number of times their donors walk by a homeless person each week…

A: The following information has been provided: Donor ZX ZY 1 -1.3 0.36 2 0.64…

Q: Fill in the following blank with either the word within or between: The arrows are pointing to which…

A: The arrows are pointing to which type of variance in the data:

Q: The sum of squares for treatments (SSB) is 1. 285,285.94 2. 9,064.68 3. 82,485.38 4. 5,948,285.98

A: Given that observation: Observation A B C D 1 245 225 219 202 2 340 311 305 284 3 298…

Q: Typed please and asap

A: The objective of this question is to find the probability density function (pdf), cumulative…

Q: The error term of squares (SSW) is?

A: Procedure to obtain two-factor ANOVA table using Excel: Enter the data in an Excel sheet. Go to…

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: What's the Z score and how is it calculated?

A: We know z-score is used in many fields. But we should know what is the meaning of z-score and how to…

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: A sample of n = 4 scores has a sum of squares = 60. What is the variance of these scores?…

A:

Q: The heights, in inches, of the four members of a barbershop quartet of singers are listed below.…

A: The value of mean is obtained below:

Q: A food bank investigates if the number of times their donors walk by a homeless person each week…

A: Given that: # of homeless people seen each week Donation to food bank Donor ZX ZY…

Q: Q3: Calculates Mean, Median, Mode, Variance and Coefficient of variation. Also show that: Q1 = P25,…

A: Please find the solution below. Here we should find Mean, Median and Mode.

Q: how did you find the Z score?

A: The critical value  of z for 97% confidence  interval  is 2.17.

Q: A population of grades for a statistics class of six students is given below:   71,63,68,80,85,82…

A: