Hours a night spent sleeping

Assignment Help Applied Statistics

Reference no: EM13658087

A student surveyed 200 students about hours a night spent sleeping, the data showed a normal distribution with a mean of 6.8 hours and a standard deviation of 0.75 hours. what percentage of the students spent less than 4.55 hours sleeping per night

Reference no: EM13658087

Questions Cloud

What is the velocity of the crate at the bottom of the ramp : A 10.0-kg box starts at rest and slides 3.5 m down a ramp inclined at an angle of 30o by the horizontal. If there is friction among the ramp surface and crate with μk = 0.2, using energy concept what is the velocity of the crate at the bottom of the ..

Directed perpendicular to the plane of the coil : A flat circular coil with 106 turns, a radius of 2.43 x10 -2 m, and a resistance of 0.328 Ω is exposed to an exterior magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at..

What is the smallest insect the bat can detect : A bat can detect very small objects, such as an insect whose length is about equal to one wavelength of the sound the bat makes. If a bat emits chirps at a frequency of 61.0 kHz, and if the speed of sound in air is339 m/s, what is the smallest insect..

Supplied to the rope so as to generate sinusoidal waves : A taut rope has a mass of 0.195 kg and a length of 3.65m. What power should be supplied to the rope so as to generate sinusoidal waves having amplitude of 0.110 m and a wavelength of 0.480 m and traveling with a speed of 29.0 m/s?

Hours a night spent sleeping : A student surveyed 200 students about hours a night spent sleeping, the data showed a normal distribution with a mean of 6.8 hours and a standard deviation of 0.75 hours. what percentage of the students spent less than 4.55 hours sleeping per..

What is the probability that sales will be less : a. What is the probability that sales will be less than 80,000 packages?

Man hong is running the balloon darts game : Man hong is running the balloon darts game at the school fair. He has blown up hundreds of balloons. 12 percent say you win 5 tickets 20 percent say you win 3 and the rest say sorry. After each play, he replaces the popped balloon with another..

Rotating with angular acceleration : The figure shows tow disks, A and B, commented together, that are rotating with angular acceleration, α. The radius of the small disk B is 2/3 the radius of the larger disk. Compute the h ratio of the tangential velocity of a point on the rim of disk..

Calculate the total number of possibilities : Calculate the total number of possibilities for a pass code that uses 6 characters the first 2 must be numbers then the last for must be unique letters

User Account

All Pages