User Account

All Pages

Sample of customer order totals with an average

Assignment Help Applied Statistics
Reference no: EM13540070

1) A random sample of customer order totals with an average of $78.25 and a population standard deviation of $22.50. Calculate a 90% confidence interval fro the mean, given a sample size of 75 orders

2) A random sample of 35 teenagers averaged 7.3 hours of sleep per night. Assume the population standard deviation is 1.8 hours. Calculate a 98% confidence interval for the mean.

3)A company claims the average time a customer waits for help is 4.78 min. Assume the population standard deviation for wait time is 1.8 min. Test the company claim at the α = 0.05 significance level by comparing the calculated z-score to the critical z-score.

Reference no: EM13540070

Questions Cloud

Who are at least 75 years of age in samples of 150 : Assume that your county's population is similar to the American population in age distribution. What are the mean and standard deviation of the proportion P^ who are at least 75 years of age in samples of 150 respondents?
State the null and alternative hypotheses : State the null and alternative hypotheses
Relationship between schizophrenia and the season of birth : The data indicate a significant relationship between schizophrenia and the season of birth?
Female college basketball players produce a distribution : The heights of all female college basketball players produce a distribution
Sample of customer order totals with an average : 1) A random sample of customer order totals with an average of $78.25 and a population standard deviation of $22.50. Calculate a 90% confidence interval fro the mean, given a sample size of 75 orders
The growth hormone increases the milk production : Is there evidence that the growth hormone increases the milk production?
A family history of allergic disease. : (a) Give a 95% confidence interval for the proportion p of children with asthma, in the general population of children who were exposed to parac-etamol in early life and have a family history of allergic disease.
Determine rossis total assets as of december : Determine Rossi's total assets as of December 31 and determine the company's total liabilities as of December 31.
Use a test of hypotheses of level alpha = 0.05 : Using this data, is there enough evidence that the average depth of the ice sheet is below 3140 m? Assume that the depth of the ice sheet is normally dstributed. Use a test of hypotheses of level alpha = 0.05.

Reviews

Write a Review

Applied Statistics Questions & Answers

  Task 1hrh king of zamunda gathered gruesome data on deaths

task 1hrh king of zamunda gathered gruesome data on deaths of his people from fire accidents in the last n2000 years

  The length of the snake vipera bertis

The length of the snake Vipera bertis (X), measured in centimeters, is assumed to be normally distrubuited with mean 63 and variance 22. The weight (Y) is measured on grams, can be calculated by using Y= -300 + 7x.

  1 listed below are the numbers of people executed in the

1. listed below are the numbers of people executed in the united states from 1976 nbsp to 1994. in 1976 the u.s.

  Single sample hypothesis testing - z-tests

Compute the single-sample z-test to see if caffeine reduces dreamtime. Test the null hypothesis at the .05 level of significance.

  A study was conducted to determine the impact of social

a study was conducted to determine the impact of social media use on student learning. a total of 103 students taking a

  How gender moderates the effects of treatment

What is the conclusion you can draw regarding research question that was posed in this research - would you now move on to interpret the results of the Tests of Between-Subjects Tests?

  In a regression analysis a nurse researcher found a

in a regression analysis a nurse researcher found a correlation of .82 between pain relief scores and satisfaction with

  Part-1- first reset the lower limit to zero and the upper

part-1- first reset the lower limit to zero and the upper limit to 1000 and then click update.- now put 6 points

  Conceptual questionswhat is the difference between

conceptual questionswhat is the difference between descriptive and inferential statistics?what are the five

  What order quantity do you recommend that mac order

What order quantity do you recommend that Mac order from the scanner manufacturer and how much more expensive is the next lowest cost option

  What does the significance value reveal about the data

Are they weak or strong correlations - what is the significance value and what does the significance value reveal about the data we have used?

  The standard deviation of activity

What is the latest possible time that Activity E can be started without delaying the completion of the project and what is the latest time that activity B can start without delaying the project

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