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(a) What are different methods of graphical representation of data? Explain them.
(b) Distinguish Histogram and Histogram clearly with illustrations.
(c) What is histogram? How could you represent a grouped frequency distribution by means of a histogram when the class widths are (i) equal, and (ii) not equal.
In a population of 5000 students, a simple random sample of 50 students is selected in order to estimate the weighted average mark for the population.
One-way analysis of variance is a method for comparing several population means, when the data are from independent samples. It a test that examines the relationship between a quantitative response variable and a categorical explanatory variable, ..
1. find the probability distribution for x the sum of a fair four sided die and and fair sixsided die. b for x from
A random sample of 400 observations produced a sample proportion of 0.32. What is the standard error to construct a 99.5% confidence interval.
Brake Pads- A brake pad manufacturer claims its brake pads will last for 38,000 miles. You work for a consumer protection agency and you are testing this manufacturer's brake pads.
A manufacturer of car batteries claims that his batteries will last, on average, 3 years with a variance of 1 year. If 5 of these batteries have lifetimes of 1.9, 2.4, 3.0, 3.5, and 4.2 years
a and b flip coins. a starts and continues flipping until a tail occurs at which point b starts flipping and continues
a bright idea. a company produces lightbulbs whose life follows the n1500 300 distribution i.e. the lifetimes of
FBI Report Do greater universities tend to have more property crime, would you speek that the correlation is low, moderate or high
Confidence Intervals and Chi Square
one sample has n 8 and ss 21 and a second sample has n 8 and ss 35. what is the pooled variance for the two
Consider the two-bidder two-object uniform-price auction. Suppose the distribution is uniform on [0, 1] and that c'(x) > 0 for every x. Show that (x, c(x)) is a symmetric equilibrium when α2 = 2.
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