Four vehicles are traveling on a 4-kilometer circular track. The four vehicles are traveling at constant speeds of 70 km/h, 63 km/hr, 75 km/hr, and 84 km/hr, respectively. Assume you are an observer standing at a point on the track for a period of 30 minutes and are recording the instantaneous speed of each vehicle as it crosses your point.

Which option below represents most accurately the time-mean speed for these vehicles during this observation period?

A single channel queue forms at the entrance to an off-street parking area. Arrivals are random, at an average rate of 12 vehicles per minute, and the time required for the service process of removing the time-card from the control box and driving past the boom gate is also random and averages 4 seconds per vehicle. To avoid spillback of the road, the entrance to the off-street parking area was designed to cater for a maximum of 10 vehicles (i.e. including both waiting and being served ). Which option below best represents the chance of spillback occurring?

Цифровий сигнал –

Select the correct option in the following statements:

Vehicles at a stop sign require a 4-second headway to cross the main street. The traffic flow on the main street is 480 vehicles per hour. Assuming the headway follows a shifted negative exponential distribution with the minimum headway of 3 seconds. 

Which option below best describes the probability for those vehicles at the stop sign to cross the main street safely?

Скільки принципів тестування існує?

Укажи, яке явище сучасності України відображено на карикатурі

Укажи, про що йдеться в газетній статті, зображеній на фотографії

Where is NYC located?

"The American Century" refers to…: