Percentage of light bulbs having life

Reference no: EM1396962

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?

Reference no: EM1396962

Questions Cloud

Standard deviation of the mean on either side : The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?

Create problem solving skills in current local issues : How many times have we heard someone complaining about something occurring in our communities-but offering no solutions for problem? Create the problem-solving skills.

What might be responsible : Gram staining results of Deinococcus and Heliobacterium are opposite of their classification. Please explain. What might be responsible?

Distinguish between the term codon and anticodon : How many different kind of bases found on Dna? How many amino acids are attached to a single transfer RNA?

Percentage of light bulbs having life : If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?

What is the expected sex ratio at birth : a)twice as many males as females b) twice as many females as males c) equal numbers of male and females d)four times as many males as females e)four times as many females as males

Structure of filament type relates to their classifications : Microtubules and actin filaments are classified as being polarized, intermediate filaments are nonpolarized, and myosin thick filaments are bi-polar.

What strategies can be used to increase data security : What issues need to be considered when planning an information systems project to increase data security?

Average response times of fire departments to fire calls : The Federal Government is stepping up efforts to reduce average response times of fire departments to fire calls. The distribution of mean response times to fire calls follows a normal distribution with a mean of 12.8 minutes and a standard deviat..

User Account

All Pages