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Q1) Waiting time, in hours, between successive speeders spotted by radar unit is continuous random variable with cumulative distribution function
F(x) = 0, x < 0,
= 1 - e^(-8x) x ≥ 0.
Determine probability of waiting less than 12 minutes between successive speeders
i) By using cumulative distribution function of X.
ii) By using probability density function of X.
Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..
At.05 significance level is it reasonable to conclude that it takes longer to determination software issues? Determine the p-value?
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To avoid the problem of not having access to Tables of F distribution with values given for the lower tail, the numerator of the test statistic should be the one with:
Using quadratic regression model find the estimated number of planes.
What is the 95% confidence interval for the difference between the mean prices of the two models?
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What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 5 of µ? Use the value 20 for the population standard deviation of scores on this subsection.
P-value to test hypotheses,
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