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Continue with the data set in Table , representing the lengths of broccoli trees after cutting.
a. Find the center line for the R chart.
b. Find the control limits for the R chart.
c. Draw the R chart.
d. Comment on what you see in the R chart. In particular, is the variability of this process in control? How do you know?
401077-Introduction to Biostatistics identify the type of variable; and identify the most appropriate graph to display the distribution of this variable
Barrows Textile Mills produces two types of cotton cloth-denim and corduroy. Corduroy is a heavier grade of cotton cloth and, as such, requires 7.5 pounds of raw cotton per yard, whereas denim requires 5 pounds of raw cotton per yard. A yard of..
Hypothesis test in the research hypothesis is specific about the difference but with no direction specified for the difference is a (n)?
Write a R -script to test it using a corresponding test : anova , simple regression, t -test , chi square and explain the outcome - Every row represents a unique observation,but the ordering per se is immaterial biologically
What are the t value and p value for age? What do these results mean? What are the assumptions for conducting the independent samples t -test?
A certain lottery has 35 numbers. In how many different ways can 4 of the numbers be selected - order of selection not important
a) A ticket is randomly selected from Box 1. Let the random variable, X, represent the number selected from the box. Give the probability distribution of X. b) Suppose two tickets are drawn from Box 1 with replacement (after a ticket is drawn it is p..
Develop two graphical presentations based on whatever variables you would like to display. These may be univariate or multivariate presentations.
For a set of 15 data points, a computer statistical package has found the multiple regression equation to be y ^ = -23 + 20x_1+ 5x_2 + 25x_3 and has listed the t-ratio for testing the significance of each partial regression coefficient. Using the 0.0..
The table below displays a week's worth of data on daily sales at the Crank It Louder Music Store. Over that time period, what was the mean daily level of sales?
Consider Mary's study of whether the learning of 6th graders on a math lesson is affected by background noise level. Describe the pros and cons of Mary using a repeated measures design for this study. What would you probably choose to do? Suppo..
Lakeshia sells 3,600 high end folding therapy
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