Suppose that the speed at which cars go on the freeway is normally distributed with mean 69 mph and standard deviation 8 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. b. If one car is randomly chosen, find the probability that it is traveling more than 66 mph. c. If one of the cars is randomly chosen, find the probability that it is traveling between 72 and 76 mph. d. 76% of all cars travel at least how fast on the freeway? mph. i came up with 74.6504. I really just need help understanding these questions. Like how so i enter these in excel to get the answers and why is there a 1 - P what is that all about
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Suppose that the speed at which cars go on the freeway is
b. If one car is randomly chosen, find the probability that it is traveling more than 66 mph.
c. If one of the cars is randomly chosen, find the probability that it is traveling between 72 and 76 mph.
d. 76% of all cars travel at least how fast on the freeway? mph. i came up with 74.6504.
I really just need help understanding these questions. Like how so i enter these in excel to get the answers and why is there a 1 - P what is that all about
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