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Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
Let X = length, in seconds, of an eight-week old baby's smile.
Find the 90th percentile for an eight week old baby's smiling time.
It is better to use the median rather than the mean for a distribution when:
Let X be the number of correct guesses by your friend in the 100 trials and Use the Normal approximation with the continuity correction - Which of the following might be reasonably modeled by the binomial distribution
Using the 0.01 significance level, can we conclude that there is a positive correlation between the variables?
Explain why random samples are preferred to nonrandom samples.
Is there evidence of difference in median performance between two methods? (Use α = 0.05.)
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
The world record time (in minutes) in the marathon is plotted versus the year in which the record was set for men and women separately. The plotting symbol o is used for men and x for women. The data include only records set between 1908 and 1988.
For the data giben below, prepare a R-chart. Note that the sample size is three.
Real estate agents always say "location, location, location" is the most important thing in buying a house. We want to know if the sales prices of homes in two neighborhoods are similar. A random sample is taken from each neighborhood. The prices ..
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
Find the probability that in a given month:
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
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