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1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π?
2. what trig function never crosses the x-axis and has a value of 2 at π/6?
are these correct?
3. what trig function has a period of π and is undefined for -π/2, π/2, 3π/2...
4. what trig function has a period of 2π, is continuous, and is increasing for 0 < x < π/2?
You are conducting a study for which it is critical that the findings be representative of the population of interest. Which of the following research methods runs the greatest risk.
How large a sample is needed to find the population mean within $250 at 99 percent confidence?
suppose that a financial analyst wants to evaluate the variability of the prices of a new stock in the market. the
Given that 800 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading greater than 140 and less than or equal to 150?
A loaf of bread is normally distributed with a mean of 22 oz and a standard deviation of 0.5 oz. What is the probability that a loaf is more than 22.25 oz?
a machine makes a product with 5 of units having faults. in a sample of 20 units what is the probability that at least
the equation for a regression line predicting the number of hours of tv watched by children y from the number of hours
How would the results of this survey be used in the workplace? Briefly describe correlational research. Name a variable from this study and one from the workplace that might prove to provide a correlational relationship.
What is the null hypothesis? Use α =0.05. Compute critical value. Use α =0.05.
Compute an F-statistic for each linear construct and determine its significance.
find the probability distribution that in a random sample of size n4 from continous uniform population with alpha0 and
find the range and the standard deviation correct to two decimal places. 83 96 99 99
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