Thursday
April 24, 2014

Homework Help: Statistics

Posted by Joy on Sunday, January 22, 2012 at 4:14pm.

Shown below are the data giving the length of life of lights in an underground tunnel.

9.0 months 7.0 months
8.2 months 8.3 months
7.8 months 8.1 months
7.5 months 7.6 months
9.1 months 7.4 months

I calculated the standard deviation to be about 0.679.
Estimate the probability that a random chosen light will last as long as 7 months after installation. Assume the data to be described by a normal distribution.

Can anyone help me with the process I would use to calculate the answer? Thanks!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

science - Shown below are the data giving the length of life of lights in an ...
geometry - Jim has put a fence along the side AC of the triangular patch of land...
STATISTICS - The Sarasota Police department collected data on the number of car ...
Physics - An insulating sphere of mass m and positive charge q is attached to a ...
statistics - The response of a sample of 1620 people who were asked if the air ...
Statistics - Mr. Crandall has assigned a term paper due at the end of the ...
Physics - VERTICAL SPRING A spring of negligible mass, spring constant k = 89 N/...
environmental science - Please check this: Scientists use statistics to a. graph...
physics - Using the data below, suggest a proportionality statement. Length (cm...
statistics - The data below are the final exam scores of 10 randomly selected ...

Search
Members