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Suppose for a particular set of data r = 0.889, ybar = 5.5, n = 15 and the equation for the regression line is yhat = 3.5 + 2.5x. Find the best-predicted value of y given that x = 2.0.
Statistics and Probability, Statistics
A survey reported that 80% of college students had access to a tablet. In a sample of 200 college students, find the probability that more than 170 had access to a tablet.
According to an? airline, flights on a certain route are on time 80% of the time. Suppose 13 flights are randomly selected and the number of? flights is recorded. ?a) Explain why this is a binomial experiment. ?b) Determ ...
A banks loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is bet ...
Recent test scores on the Law School Admission Test (LSAT) are normally distributed with a mean of 162.4 and a standard deviation of 15.9. What is the probability that the mean of 12 randomly selected scores is less than ...
A manufacture makes makes two models of an item. Model 1 which accounts for 89% of unit sales, and model 2, which accounts for 11% of unit sales. Because of defects the manufacture has to replace (or exchange) 11% of its ...
Total cholesterol in children 10 to 15 years of age is assumed to follow a normal distribution of 191 and a standard deviation 22.4. What proportion of children 10 to 15 years of age has total cholesterol between 180 and ...
Buses run every 15 minutes along a certain route during rush hour. The time that a person would have to wait at a bus stop is uniformly distributed between 0 and 18 minutes. a. What is the probability that this person ha ...
If you know the percentile rank is 50. The mean is 50 and the standard deviation is 5. What is the raw score, z score, and t score?
Given that X is binomially distributed with n = 36, and p = 0.33, use the normal approximation to the binomial (with correction for continuity) to estimate the probability that X is less than 14? Round your answer to 2 p ...
What is the sample size for studies with MOE of +/-3.5% and +/-2.8%?, with a confidence level of 95%, sample statistics of .50? Please show work.
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
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