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The College Board reported that 60% of all students who took the 2006 AP Statistics exam earned scores of 3 or higher. One teacher wondered if the performance of her school was different.
She believed that year's students to be typical of those who will take AP Stats at that school and was pleased when 65% of her 54 students achieved scores of 3 or better. Can she claim that her school is different? Explain.
1. according to investment digest diversification and the riskreward relationship spring 2011 1-3 the mean of the
In a certain distribution of numbers the mean is 60 with a standard deviation of 8. Use Chebyshevs theorum to tell the probability that a number lies in each interval.
One group was enquired, questions what they saw. One group was enquired, "About how fast were cars going when they smashed into each other?"
find the value of the linear correlation coefficient r. x 22.6 36.6 15.6 35.0 47.5 y 7 6 6 2 6 a 0 b -0.478 c
a. Formulate the null and alternative hypotheses. b. Which statistical test would you use? Why?
a study found that the average time it took a person to find a new job was 3.5 months. if a sample of 30 job seekers
Do the data indicate that the mass of the spill tends to diminish as time increases? If so, how much will the mass diminish each minute?
Find the values of the correlation coefficients and the coefficients of determination, and explain their meaning - explain the meaning of the y-intercept (b0) term and the estimate of slope coefficients
us airways conducted a number of studies that indicateda substantial savings could be obtained by encouraging
What is the formula for measuring earthquakes? Why is a 7.0 earthquake ten times stronger than a 6.0 earthquake?
the sugar content of the syrup in canned peaches is normally distributed. a random sample of n 10 cans yields a sample
Can you please explain a general strategy for factoring in a very organized way. Give an example if possible.
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