Standard deviation of the mean

Assignment Help Basic Statistics
Reference no: EM1395187

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?

Reference no: EM1395187

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Probability of a player weighing

The probability of a player weighing more than 241.25 pounds on a team with the mean weight of 200 pounds and a standard deviation of 25 pounds is ??

  Sample size when increasing the confidence level

Comparing the results from (a) and (e), what happens to the required sample size when we increase the confidence level?

  Difference between paramaeter and statistics

Critically the difference between Paramaeter and Statistics and Critically discuss the concept of operationalize? What are focus groups

  Coefficient of variation and standard deviation

Country A and Country C spends about the same amount on average per person per year. Which has the greater spread?

  Understand the height of a california redwood tree

Any person who is familiar with these trees understand the height of a California redwood tree which is related to another characteristics of the tree.

  Test whether the mean weight is less

Compute the value of t. What is your decision regarding the null hypothesis?

  The rules of probability

Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is

  Estimating the value of probability by binomial distribution

What's the probability that among three randomly selected high school students

  Test whether the average cycle of sleeping and waking

Test whether the average cycle of sleeping and waking differs significantly from 24 hours.

  Determining mutually exclusive information from abstract

Following is based on information from Statistical abstract of the United States, Dec, 1992. Are A and B mutually exclusive?

  Find probability with the cards

An experiment consists of selecting a card at random from a 52-card deck. Refer to this experiment and find the probability of the event.

  Average annual salary for a worker in united states

Suppose that the average annual salary for a worker in the United States is $30,000 and that annual salaries for Americans are normally distributed with a standard deviation equal to $7,000. Determine the following:

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd