Determine rate of each train if began from same place
Two trains began from same place at same time and traveled in opposite directions at rates which differed by 20 miles per hour. In five hours, they were 650 miles apart. Determine rate of each train.
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Two cars begin at the interstate interchange and travel in same direction at average speeds of 40 mph and 55 mph. How much time should elapse before two cars are 5 miles apart?
Find out the critical value of F at 95% confidence. Calculate the p-value and use it to test the above hypotheses.
Let X be the number of heads obtained in five tosses of fair coin. Let -(negative infinity) < t < positive infinity and define g(X)=e^tx.
Let the r.v. X have density function for k>0 constant. f(x)={k(x-x^3) for 0<x<1} and {0 otherwise} Find the inter-quartile range
To protect account access, we allot to every user of the system private 4-digit number (PIN). Find the probability that at least two of users have identical PINs?
Complete trip of 295 miles takes five hours. How long it takes to reach Pennsylvania-Ohio border? How long it takes to get from border to grandparent's house?
The GPA of a sample of students in UCCB has sample mean 3.9106 and sample standard deviation 0.256, with 95% confidence interval (3.488,4.333). Which of the following is correct?
Out of 243, the number of female Students which watch more than five Student football games this season is recorded. Out of 286 male Students, the same statistic was recorded. Which confidence interval would let us to say there is sufficient evide
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