Part A: (Use Excel and a calculator as needed for part A.)
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Section 1.2 (page 39), exercise 27.
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Section 1.5 (page 82), exercise 18.
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The split-adjusted value a share of Microsoft stock in June for selected years is given below. Answer questions a. and b. to the right of the table.
|
Year |
MSFT share price in June |
|
1994 |
$ 6.83 |
|
1996 |
$ 15.73 |
|
1998 |
$ 54.28 |
|
2000 |
$ 119.94 |
a. Give a quadratic model for the price.
b. Use the model to predict the June 2006 price of Microsoft stock.
4. Section 1.4 (page 67), exercise 15.
Part B: (Do not use Excel or a calculator for part B.)
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Section 1.2 (page 38), exercise 19, parts a, b, and c.
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Section 1.3 (page 53), exercise 11.
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Section 1.4 (page 66), exercise 9.
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Four different scenarios are given below. Answer the same question four times, once for each of the scenarios: Question: Identify a type of model (from the choices linear, exponential, and logistic) that is a particularly poor choice for modeling the scenario, and give a reason why it would be a poor choice.
a. The average GPA (as a number between 0.0 and 4.0) of Drew graduates by year, since 1950.
b. Drew’s tuition (in dollars), since 1950.
c. The percentage of first-year Drew students with cell phones, since 1990.
d. Data whose scatterplot appears to be concave up for small x-values and concave down for large x-values.
5. The following scatterplot shows the number of transistors that could be put on one integrated circuit in the years 1961 through 1966.
a. Between 1962 and 1963, the number of transistors per integrated circuit increased by how many?
b. Between 1963 and 1964, the number of transistors per integrated circuit increased by how many?
c. Between 1962 and 1963, the number of transistors per integrated circuit increased by what percentage?
d. Between 1963 and 1964?
e. What kind of model is suggested by the answers to parts a) and b)?
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