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Assume that the class has 60 students and 60 minutes to complete the exams. How many students do you expect not to be able to complete the exam in the alotted time?
What is the difference between the Wilcoxon signed-ranks test and the Wilcoxon rank-sum test? no minimum word count.
The population standard deviation is σ2 = 7. Test that the population means differ using a 1% significance level.
Construct a 95% confidence interval for the proportion of people disagreeing with the statement.
Determine whether the given value is a statistic or a parameter. A researcher determines that 42.7% of all downtown office buildings have ventilation problems. Is this a statistic or a parameter; explain your answer.
The IQ scores of 30 children from under-privileged households, were measured before and a year after, a program of nutritional supplementation was instigated at a primary school.
Determine the point estimate of difference between mean fuel efficiency rating for midsize cars and large cars? Calculate p-value for the hypothesis test.
One person's file is chosen at random. Find out probability that selected person will fall into following categories. Book keeping.
A population has mean 325 and variance 144. Suppose the distribution of sample means is generated by random samples of size 36.
Nitrogen and Seagrass. The seagrass Thalassia testudinum is an integral part of the Texas coastal ecosystem. Essential to the growth of T. testudinum is ammonium.
Since they will be multiplying this average by the total number of customers to get an overall forecast, they would like to accurately estimate this average with a margin of error of less than $4000.
What is the numerical value of the sample proportion p^ ? The P-value is the probability of what event?
What do you find out when you perform the nonparametric statistics?
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