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An access code consists of a letter followed by four digits. Any letter can be used, the first digit cannot be zero, and the last digit must be even.
A) Find the sample space for the number of outcomes (you don't need to list the possible outcomes, just how many possible outcomes there are).
B) What is the probability of correctly guess the right code on the first try?
C) What is the probability of not correctly guessing the right code o the first try?
A pollster calls 500 randomly selected people and all 500 respond to her first question. Because the subjects agreed to respond, is the sample a voluntary response sample?
To evaluate average annual expenses of students on books and class materials sample size 36 is taken.
Supposing that the entire $10,000 can be spent on tires (ignoring other costs), and that the true fraction that will fail is approximately .05, can NHTSA attain its goal while staying within the budget? Describe.
The following survey questions have been established for a medical errors and patient safety business research paper:
Do the data indicate a significant difference? Test with ∝ = .05.
Plot stem-and-leaf plot and boxplot for Mtotal. Illustrate hand calculation of median location and upper hinge location of boxplot, and determine their corresponding data values.
A state meat inspector in lowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled " 3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
The probability that an individual is left-handed is 0.1. In a class of 30 students, what is the probability of finding at least five left-handers?
Agricultural researchers are studying three different ways of planting peanuts to determine whether significantly different levels of production yield will result.
The researchers claimed that of those who completed the program, 85% improved. What possible confounds can you identify in this study?
Below you are given a partial computer output based on a sample of 21 observations, relating an independent variable (x) and a dependent variable (y).
This model is fit to the data using the method of least squares using statistical software, and the following ANOVA table is obtained
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