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1. Graph this equation put at last five points for the equation.
x +4y= 5
2. Graph each inequality. use the test point method.
4x + 3y>24
Identify the formal hypothesis testing process. Perform a hypothesis test of one proportion.
Nine percent of undergraduate students carry credit card balances greater than $7,000. Suppose 10 undergraduate students are selected randomly to be interviewed about credit card usage.
A TV executive is interested in the popularity of a particular cable TV show. She has been told that a whopping 68% of American households would be interested in tuning in to a new network version of the show.
The wheat harvesting season is short. Farmers deliver their truck loads of wheat to a giant central storage bin within a two-week span. Because of this, wheat-filled trucks waiting to unload and return to the fields have been known to back up for ..
The mean math score for fifth grade students at Smart Elementary is 90 with a standard deviation of 8. The fifth grade students are tested each year to determine if the mean score remains the same.
Researchers are studying the absorption of two drugs into the bloodstream. Each drug is to be injected at three dosages. There are 24 people in the study, and they are randomly divided into six groups.
Precisely (that is, using specific numbers) what does the central limit theorem tell us about the sampling distribution of sample means for samples of this size from this population?
Faced with rising Fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below.
A t-distribution to create 90% confidence interval for population mean. If convenient, use technology to create the confidence interval.
Construct a probability for the number of students in the sample who watch soap operas.
Determine the p-value; and at 95% confidence, test the above hypotheses.
If a time series is stationary without a linear trend or the seasonal component, which of the following forecasting methods may be suitable.
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