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How many more sheep should be included in the sample if we want to say with 98% confidence that the population mean weight of the Jacob sheep is within 2.0 lb of the sample mean?
A sample of 46 bars is taken and their mean length is determined to be 51 centimeters with a standard deviation of 3.6 centimeters. Using a .01 significance level, test the retailers claim that the population mean is less than 50 centimeters.
Use PHStat to make a box-whisker plot. If PHSTAT has yet to be installed, calculate Xmin, Xmax, Q 1 , Q 3 and median using equation in Class Notes-Quartiles, Percentile & Dectiles.
The owner of Britten's Egg Farm wants to estimate the mean number of eggs laid per chicken. A sample of 20 chickens shows they laid an average of 22 eggs per month with a standard deviation of 2.03 eggs per month.
In forestry there appears to be a correlation between the diameter of a tree at breast height and the totol height of the tree. For the following sample of ten white spruces first construct a scatter plot then find the correlation (r) between heig..
Based on these data, explain whether or not course attendance had any effect on determining of a restaurants violation of health code.
The following payoff matrix has been developed for the decision problem. What is the opportunity loss when "A" is Investment alternative and "Decline" is state of nature?
Assume the probability that a telephone in any given telephone booth is defective is 0.2. Determine the probability that if 8 phone booths are examined, the number of defective phones is exactly 3.
Describe a business-related situation in which you would expect there to be a strong relationship (correlation) between an independent and dependent variable.
3 cards are randomly selected without replacement from an ordinary deck of 52 playing cards. Compute the conditional probability that the first card selected is a spade, given that the second and third cards are spades.
What is the relationship between a confidence interval and a single sample, two-tailed hypothesis test? How are they the same? How are they different?
Suppose that SAT score is normally distributed with a mean 988 and a standard deviation of 211 in 2004.A local college plans to set up a scholarship budget for 2005 where $5000 will be awarded to each incoming freshman whose SAT score is higher th..
In a random sample of 16 mountain climbers who are going to attempt Mt. McKinley, what is the probability of each of the following?
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