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1. How many solutions exist for a quadratic equation? How do we determine whether the solutions are real or complex?
2. Translate the following into a quadratic equation, and solve it, showing your work: The length of a rectangular garden is three tiems its width; if the area of the garden is 75 square meters, what are its dimensions?
The heights of adults in one town have a mean of 66.3 inches and a standard deviation of 3.3 inches. What can you conclude from Chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches..
Explain the relationship between sample size and the likelihood of a statistically significant difference between the measured values of two groups.
A survey found that 85% of women in a given city enjoy shopping online. Suppose you randomly selected 6 women from the city and ask them whether or not they enjoy shopping online. Find the probability that exactly 4 say they enjoy shopping online.
Sun Microsystems has approximately 50% of the high-end Unix machines market with its closest competitor being IBM. Suppose that 15 firms were in the market to purchase a high-end Unix machine. Assume that these firms listened to sales pitches by a..
Determine the largest plausible average balance for the accounts of those using her managed fund in which you could have 90% confidence.
Find the z score corresponding to a score of X = 60 for each of the following distributions:
Between 180 and 230 (inclusive) of the drivers in the sample regularly wear a seatbelt? Hint: Use the BINOMDIST function in Excel.
A manager hopes to improve the sales figures for 10 employees by sending them to a motivational seminar. To test the effectiveness of this seminar
What can you conclude regarding the information? Who tends to order the most or least number of condiments?
Estimate with 90% confidence the difference in the level of satisfaction with service between the two branches.
if i have been approved for a $70,000 loan toward the purchase of a new home at 12% interest. The mortgage is for 30 years. How much are the approximately annual payments of the loan? Hint: Assume you pay yearly.
Develop a trend line for the demand for fertilizer using computer software. Data collected on the yearly demand for 50 pound bags of fertilizer at Wallace Garden Supply are shown in the following table:
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