Assignment
Complete the assignment on this or a separate sheet of paper.
⦁ Order the four variables from least variation to most variation (which ones would have the smallest range/standard deviation to largest range/standard deviation).
⦁ Scores on a test in which all the students got a perfect score.
⦁ Scores on a test in which half the students got a C and half failed.
⦁ Scores on a test in which half the students got an A and half got a B.
⦁ Scores on a test in which half the students got an A and half failed.
⦁ Order the four variables from least variation to most variation (which ones would have the smallest range/standard deviation to largest range/standard deviation).
⦁ 100-meter times for male Olympic sprinters
⦁ 100-meter times for college seniors
⦁ 100-meter times for adults
⦁ You have graduated college and are picked between two jobs. The first job has a yearly salary while the second job is based entirely on commission from each sale. Which job has more variability in pay? Explain your answer.
⦁ Before the 2016 election, a poll was conducted to estimate the percent of people voting for amendment 71. The poll estimated that 54% would vote yes, with a margin of error of 2%.
⦁ Based on this poll, the percent voting yes is between what two values?
⦁ Based on this poll, can we conclude that a majority of people will vote yes?
⦁ The mean weight of newborn infants is 7 pounds with a standard deviation of 0.8 pounds. Draw the normal distribution to answer the following questions.
⦁ 68% of all newborn infants are between what two weights?
⦁ Give the percentage of infants that have a weight between 4.6 and 9.4 pounds.
⦁ Give the percentage of infants that have a weight between 5.4 and 8.6 pounds.
⦁ Give the percentage of infants that have a weight above 9.4 pounds.
⦁ Give the percentage of infants that have a weight below 5.4 pounds.
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