SOLUTION: Q: The time spent by customers in a supermarket follows a normal distribution with mean 23 minutes and standard deviation 6 minutes.
If six customers go to the supermarket what
Algebra.Com
Question 434560: Q: The time spent by customers in a supermarket follows a normal distribution with mean 23 minutes and standard deviation 6 minutes.
If six customers go to the supermarket what is the probability that the total time spent in the supermarket by all six customers is at least two hours and fifteen minutes?
How would i solve this question in MICROSOFT EXCEL 2010??
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The time spent by customers in a supermarket follows a normal distribution with mean 23 minutes and standard deviation 6 minutes.
If six customers go to the supermarket what is the probability that the total time spent in the supermarket by all six customers is at least two hours and fifteen minutes?
How would i solve this question in MICROSOFT EXCEL 2010??
--------------------
Can't help you with the software; can with the problem.
-----
x-bar = (2*60+15)/6 = 22.5 minutes
-----
t(22.5) = (22.5-23)/[6/sqrt(6)] = -0.0340
---
P(x-bar >= 22.5) = P(t >= -0.0340 with df = 5) = 0.5129
======================
Cheers,
Stan H.
==============
RELATED QUESTIONS
1. A supermarket manager has determined that the amount of time customers spend in the... (answered by tommyt3rd)
9) The time spent by students on a particular E270 homework assignment follows a normal... (answered by stanbon)
Amy and Molly go to three parties the night before graduation. For where they live, the... (answered by Boreal)
Regal Cinemas commissioned a national study to determine the amount of money spent on... (answered by Boreal)
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50... (answered by robertb)
The number of cell phone minutes used by high school seniors follows a normal... (answered by ewatrrr)
Executives of a supermarket chain are interested in the amount of time that customers... (answered by edjones,richard1234)
The weight of a certain type of chicken, when ready for the market, follows a normal... (answered by Boreal)
The waiting time for customers at MacBurger Restaurants follows a normal distribution... (answered by stanbon)