Patrick took his sample and his average was 2257 now what

Reference no: EM13641310

Mallory has discovered that the amount of time it takes for a dollar bill to turnaround is distributed N(19,81) in weeks. Sadly she absolutely refuses to tell Patrick, and so Patrick is forced to sample random dollar bills to try to figure our the mean for himself.

Assume Mallory is correct, and that Patrick plans on sampling 9 dollars.

A) What is the probability that Patrick's sample average will be more than 20?

B) Patrick took his sample and his average was 22.57. Now what is the probability that his sample average is more than 20?

C) What is the probability that the true average turnaround time is greater than 20?

Reference no: EM13641310

Questions Cloud

Develop a schedule for gasoline consumption and maximum : the amount of fuel introduced into a spark ignition engine is used in part to control the power produced by the engine.

A cast a die a number of independent times until a multiple : a cast a die a number of independent times until a multiple of 3 appears on the top side of the die. find the

What are the magnitude and direction of the force acting on : three equal charges q are placed at each of three corners of a square of side d. a fourth charge of -3q is placed at

One mole of s2 gas is held at a pressure of 020 atm and a : one mole of s2 gas is held at a pressure of 0.20 atm and a temperature of 800k. two moles of oxygen gas are held at a

Patrick took his sample and his average was 2257 now what : mallory has discovered that the amount of time it takes for a dollar bill to turnaround is distributed n1981 in weeks.

The atomic mass of neon is 202u and that of krypton is 838u : a sound wave travels twice as far in neon ne as it does in krypton kr in the same time interval. both neon and krypton

Propane c3 h8 reacts with oxygen o2 to produce a carbon : propane c3 h8 reacts with oxygen o2 to produce a carbon dioxide and water. the reaction is exothermic with deltah -2220

Two ping-pong balls each have a mass of 27 g and carry a : two ping-pong balls each have a mass of 2.7 g and carry a net charge of 0.430 microc. one ball is held fixed. at what

A particle moves on 3 points situated on a circle at each : markov chain-random walk on a circlea a particle moves on 3 points situated on a circle. at each step it is equally

User Account

All Pages