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(1) Can you describe a data set for which one would one would prefer to use the median rather than the mean?
(2) Can you think of a situation for which the mean would be preferred to the median and the mode?
(3) Why do we not always use the median?
(4) Why is the mode not a very good measure for quantitative data?
Construct a 96% confidence interval for the population proportion when 285 people out of 750 were in favour of boycotting the World Cup matches if prices were to rise above $100 for 64 televised matches.
The probability of error in the transmission of a binary digit over a communication [2] channel is 1=103. Write an expression for the exact probability of more than 3 errors when transmitting a block of 103 bits. What is its approximate value? Ass..
Twelve cases of leukemia are reported in people living in a particular census tract over a 5-year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer-incidence rates?
Define, describe and provide an example of the Komologrov-Smirnov distribution. Use MS-Excel (if possible) to solve this problem, also Show all your work in obtaining the answer.
Fred received the following scores for his gymnastics routine: 8.5, 7.8, 8.0, 6.8, 7.1, 7.6. To figure out his score, the judges drop the highest and lowest score and then average the rest of his scores.
Create the 95% confidence interval for proportion of adults from Country A who say human activity contributes to global warming.
Total housing costs as a percent of monthly income, five years ago and now. The information is reported below. Is it reasonable to conclude the percent is less now than five years ago?
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $11.35.
Explain the logic of the ordinary least Square (OLS) method? How are the least squares formulas for the slope and intercept derived?
If the p value for a test for difference of educational level of two groups is p=0.0184, is the difference statistically significant at the 0.01 level?
At least 14 units of B and no more than 20 units of A must be used. Each unit of A weighs 5 kg and each unit of B weighs 10 kg. How many units of each type of raw material requires?
Let X = duration of Old Faithful geyser (in seconds), and let Y = time (in minutes) until next eruption Is there a relationship between X and Y ? What is P (a
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