Suppose that on a certain section of SRP with a posted speed limit of 65 kph, the speeds of all vehicles have a bell-shaped distribution with a mean of 72 kph and a standard deviation of 3 kph. a) Using the empirical rule, find the percentage of vehicles with the following speeds on this section of SRP. i. 63 to 81 kph ii. 69 to 75 kph b) Using the empirical rule, find the interval that contains the speeds of 95% of vehicles travelling on this section of SRP.
Suppose that on a certain section of SRP with a posted speed limit of 65 kph, the speeds of all vehicles have a bell-shaped distribution with a mean of 72 kph and a standard deviation of 3 kph.
a) Using the empirical rule, find the percentage of vehicles with the following speeds on this section of SRP.
i. 63 to 81 kph
ii. 69 to 75 kph
b) Using the empirical rule, find the interval that contains the speeds of 95% of vehicles travelling on this section of SRP.
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The 2019 gross sales of all car companies in the country have a mean of 2.3 billion pesos and a standard deviation of 0.6 billion pesos. Using Chebyshev's theorem, find at least what percentage of companies in the country had 2019 gross sales of
a.) 1.1 to 3.5 billion
b.) 0.8 to 3.8 billion
C.) 0.5 to 4.1 billion
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