Mathematics, 29.01.2022 17:10 rokinray
The speeds of cars passing a point on a highway are analysed by the police force.
It is found that the speeds follow a normal distribution with mean 115.7 km/h and standard deviation 10 km/h.
a.) Find the probability that a car chosen at random will be travelling between 110 km/h and 120 km/h.
b.) A sample of eight cars is taken. Find the expected number of the sample that are
travelling between 110 km/h and 120 km/h.
c.) Find the probability that in the sample of eight, more than five cars are travelling
between 110 km/h and 120 km h. State the assumptions you must make.
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 19:30, leannamat2106
Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.
Answers: 1
Mathematics, 21.06.2019 21:10, elnkun98owvaa6
The equation |pl = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn? o o -2 2 oor 2 -2 or 2 o
Answers: 1
You know the right answer?
The speeds of cars passing a point on a highway are analysed by the police force.
It is found that...
Questions in other subjects:
