User Account

All Pages

Hours and a standard deviation

Assignment Help Basic Statistics
Reference no: EM131332619

A buyer suspects that the factory's claimed life of mean is 3000 hours for these light balls are too high. To check the claim, the factory tests 50 of these light balls and gets a mean lifetime of sample mean = 2988 hours and a standard deviation of s = 155 hours. What can the factory conclude at the 0.01 level of significance if they test the null hypothesis mean = 3000 hours again an appropriate alternative?

Reference no: EM131332619

Questions Cloud

Mean test scores for a college enter exam : Suppose the mean test scores for a college enter exam is normally distributed with mean = 78 and standard deviation = 12. a). If an individual student is selected at random, what is the probability that this student's score is over 80?
Discuss the form of program evaluation for an organization : Many international non-governmental organizations do not use any form of program evaluation. This is alarming because program evaluations are an important process for non-governmental organizations and are an effective management practice.
Mean test scores for a college : 1) Suppose the mean test scores for a college enter exam is normally distributed with mean = 78 and standard deviation = 12. a). If an individual student is selected at random, what is the probability that this student's score is over 80?
How each state differs from the other : Using two states of the world describe the following situation, specifying how each state differs from the other: "Roger ascribes probability 0.4 to the Philadelphia Phillies winning the World Series."
Hours and a standard deviation : A buyer suspects that the factory's claimed life of mean is 3000 hours for these light balls are too high. To check the claim, the factory tests 50 of these light balls and gets a mean lifetime of sample mean = 2988 hours and a standard deviation ..
Give a mean mileage of greater : A car salesmen claims that a particular make of a car would give a mean mileage of greater than 20mpg. If I ran 10 cars on one gallon of gas each and came up with 10 different results, what statistical formula would I use to support the salesmen c..
Professor han method : a). Is this evidence at 1% level that Professor Han's method produces less than 25% grades less than a C? b). What is the p-value for your test?
What is the book value of the equipment at end of january : The Sample Café nearly broke even in the first month of business. Below is a summary of revenue and expenses for January. What is the book value of the equipment at the end of January?
Describe the current state of your field : Some items to look for and include in your final research report are listed below. Select some or all of the sites below to begin your search and to find information about your field--information related to your present or future occupation. This ..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Standard normal distribution table

Standard Normal Distribution Table

  In exponential smoothing models the value of the smoothing

in exponential smoothing models the value of the smoothing constant may be any number between .a -1 and 1b -5 and 5c 0

  Addition thermo on probability

Addition Thermo on Probability - If a man is randomly selected for an interview, what is the chance he will Play football or basketball?

  Information in a graphical format

Graph the information using a histogram and a scatter plot in Excel as well. How does seeing the information in a graphical format provide more information?

  Student chosen randomly from students

A math course has 2 sections. Section one has 55 students of which 10 received an A. Section two has 45 students of which 11 received an A. If a student was chosen randomly from 100 students

  In an application to estimate the mean number of miles that

in an application to estimate the mean number of miles that employees commute to work roundtrip each day the following

  Performung a one or two-tail test

Compose a 350 to 700-word summary report of your findings to the researcher and owner of the restaurant in which you Identify evidence, if any, of the researcher's claim. Perform a one- or two-tail test on the data provided,

  Two cards are drawn without replacement from a standard

two cards are drawn without replacement from a standard deck of fifty-two cards. find the probability of these

  Which one of the following statements is correct regarding

which one of the following statements is correct regarding the width of a confidence interval?select onea. if the

  Decision regarding observed and expected frequencies

What is our decision regarding differences between observed and expected frequencies if critical value of chi-square is 9.488 and computed value is 6.079.

  Tennis tournament-chart the decay rate

Each year the local country club sponsors a tennis tournament. Play starts with 128 participants. During each round, half of the players are eliminated.

  A confidential and voluntary survey conducted in sta 3024

a confidential and voluntary survey conducted in sta 3024 in the spring of 1999 asked the students questions about

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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