HW 11 Question 14: A college admissions officer takes a simple random sample of 100 entering freshman and computes their mean mathematics SAT score to be 458. Assume the population standard deviation is 116. Use this information to answer question. Compare the 95% confidence interval to the 99% confidence interval. Explain the difference between the two […]
Assume that the weights of salmon in the Columbia River are normally distributed. You randomly catch and weigh 20 salmon. The mean weight from your sample is x ? = 25.2 pounds with a standard deviation of s = 4.5 pounds. Test the claim that the mean weight of Columbia River salmon is greater than […]
An overnight rainstorm has caused a major roadblock. Three massive rocks of mass m1 = 584 kg, m2 = 815 kg and m3 = 355 kg have blocked a busy road. The rocks are side by side blocking the road and lined up from left to right in order as m1, m2 and m3. The […]
Palm Products Company has collected data on its average variable costs of production for the past 12 months. The costs have been adjusted for inflation by deflating with an appropriate price index. The AVC and associated output data are presented below: obs Q AVC obs Q AVC1 22 $208 7 45 $1722 31 202 8 […]
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