Reference no: EM131843585
A statistics instructor wants to measure the effectiveness of his teaching skills in a class of 102 students (N = 102). He selects students by waiting at the door to the classroom prior to his lecture and pulling aside every third student to give him or her a questionnaire.
Is this sample design an example of random sampling? Explain.
Assuming that all students attend his class that day, how many students will the instructor select to complete his questionnaire?
Suppose you were going to conduct a survey of visitors to your campus. You want the survey to be as representative as possible.
a. How would you select the people to survey?
b. Why would that be your best method?
In a school band, 9 kids play string instruments, 10 kids play woodwind instruments, 7 kids play brass instruments, and 4 kids play percussion instruments.
a. What is the probability that you randomly select a kid who plays a string or percussion instrument?
b. What is the probability that you randomly select a kid who does not play a brass instrument?
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Find the value-added ratio under the traditional methods
: Determine the value-added, non-value-added, and total lead times, and the value-added ratio under the traditional and lean manufacturing methods.
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How would you determine the confidence interval
: How would you determine the Confidence Interval using the the mean, standard deviation, and sample size? Please describe.
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Create a crc card model for the blackjack game
: Create a CRC card model for the Blackjack Game. Create a card for each class you identify in the Blackjack Game. Identify any collaborating classes.
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Comment on the skewness for the data on starting salaries
: Comment on the skewness for the data on starting salaries:Plot a histogram and determine the skewness. (I know you can go into insert chart
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Is this sample design an example of random sampling
: He selects students by waiting at the door to the classroom prior to his lecture and pulling aside every third student to give him or her a questionnaire.
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How do the sample mean and the population mean differ
: 1. How do the sample mean and the population mean differ? What is the symbol for each type of mean?
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Why would the judge not find a criminal violation
: It has been called the MySpace suicide case. On May 14, 2008, a federal grand jury indicted Lori Drew, 49, of Missouri, the so-called cyber bully.
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What does the given string of bits represent
: In the 4-bit computer we can find several occurrences of the 4-bit string, 0011. What does this string of bits represent?
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Largest possible standard deviation
: Match your choices of numbers below in rising order. Pay attention that the number 0 is the 11th choice. 1. 1 2. 2 3. 3 4. 4 5. 5 6. 6 7. 7 8. 8 9. 9 10. 10 11.
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