Explain differences in three categories using significance

Assignment Help Basic Statistics
Reference no: EM13113378

A manufacture of electronics components was concerned about the reliability of one of its products. The company wished to see if the input current that the component would draw from a power source such as a battery changed over time. Twenty components were pretested at the time of manufacture, 9 days later, and 58 days later. The data (in milliamps) are shown below. Using the .05 level of significance, are there any differences in the three categories.

Reference no: EM13113378

Questions Cloud

Values of test statistics : The following sample data were obtained from three populations where the variances were not equal, and you wish to compare the populations.
Locate the value of t under the conditions : Use Appendix F below to locate the value of t under the following conditions. The sample size is 15 and the level of confidence is 95 percent.
Compute percentage of car models that get more mpg : What proportion of 330 cci cars fall between 26 to 30 miles per gallon range? Compute the percentage of each of the car models that get 30 or more mpg.
Null hypothesis-alternate hypothesis and critical value : A sample of 100 orders revealed that 82 were delivered within the promised time. At the 0.10 significance level, can we conclude that less than 90% of the orders are delivered in less than 10 minutes?
Explain differences in three categories using significance : The data (in milliamps) are shown below. Using the .05 level of significance, are there any differences in the three categories.
Hypothesis testing-chicken delight : Chicken Delight claims that 90% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 100 orders revealed that 82 were delivered within the promised time.
Z tests and levels of significance : Tourism is one consideration for CoffeeTime's future. A survey of 1,233 visitors to Mumbai last year revealed that 110 visited a small cafe during their visit. Laura claims that 10% of tourists will include a visit to a cafe.
Research design and validity : The Dean is hanging his head in shame. He realizes his failings in designing an adequate research design to assess the effects of the move on majors and has revised the proposal.
Yules coefficient and interpretation : There is a program for STD/HIV/pregnancy education/prevention called Postponing Sexual Involvement (PSI) run in Atlanta. Evaluation data collected at the end of ninth grade as a follow-up to the program compared two group of adolescents

Reviews

Write a Review

Basic Statistics Questions & Answers

  Testing of hypothesis of restaurant claims

A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute.

  Carrying out anova and post-hoc comparisons

Carry out the ANOVA and, if essential, post-hoc comparisons. Make a graph to represent group differences, and interpret ANOVA in a paragraph written in APA style.

  Types of statistics-can ever be accurate

Do you think that these types of statistics can ever be accurate? How could this statistic be biased? In what ways could scientists misinterpret the results of their studies and come up with an incorrect statistic? What are your thoughts?

  Test vlaue in the noncritical region

Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..

  Prediction interval for a new patient

The 95% prediction interval for a new patient with a 2-day cholesterol level of 220 is

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  Advantages and limitations of simple linear regression model

Why is estimating a multiple regression model just as easy as bivariate regression?

  Discrete random variable and continuous random variable

Which of the given is the example of a discrete random variable? Which of the given is an example of continuous random variable?

  Determine cumulants-ratio-standard deviation-average energy

Determine the first two cumulants also the ratio between the standard deviation and average energy. Explain why distribution becomes extremely narrow.

  Evaluate the average earnings

If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.

  Find indicated probability using the geometric distribution

Find the indicated probability using the geometric or Poisson distribution. A newspaper finds that the mean number of typographical errors per page is nine.

  Testing of hypothesis of sara bellum pizza

You are the member of the marketing team at Sara Bellum's Pizza - the pizza for people who think too much!! Your mission is to evaluate two locations and determine if there is any difference in their suitability as locations for the next Sara Bell..

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