User Account

All Pages

Caffeine content is in fact different

Assignment Help Basic Statistics
Reference no: EM132188585

A coffee shop claims that its fresh-brewed drinks have a mean caffeine content of 80 milligrams per five ounces. You work for a city health agency and are asked to test this claim. You find that a random sample of 42 five-ounce servings has a mean caffeine content of 83 milligrams and a standard deviation of 7.5 milligrams. At = 0.05, do the evidence suggest that the mean caffeine content is in fact different than 80 milligrams per five ounces?

Explain in r code

i) null and alternative hypotheses

ii) statement of assumptions

iii) calculation of the test statistic

iv) calculation of the P-value

v) decision in terms of the null hypothesis

Reference no: EM132188585

Questions Cloud

What is the direction of the test : Before starting his campaign for mayor, Mr. Emory Board decided to do study to see if there was a difference in the proportion of registered men and women
What is Project Delta IRR : Both projects have 4-year lives, and they have risk characteristics similar to the firm's average project. What is Project Delta's IRR
What is the direction of the test : What is the direction of the test? (TWO-TAILED or UPPER-TAILED or LOWER-TAILED)
What is the direction of the test : the investigator conclude from these data at a level of significance of .05? What is the direction of the test? (TWO-TAILED or UPPER-TAILED or LOWER-TAILED)
Caffeine content is in fact different : At = 0.05, do the evidence suggest that the mean caffeine content is in fact different than 80 milligrams per five ounces?
What is your after tax return for each of these bonds : Your marginal tax rate is 30% and you offered a corporate bond paying 6% or a municipal bond paying 4.3%, what is your after tax return for each of these bonds
Compare and contrast human services organizations : Identify two provisional factors (for example, performance outcome measures) that have direct implications on direct service - Discuss their effects, positive
Product because of pollution concerns : To do so, you randomly select 980 Canadian consumers and find that 314 have stopped buying this product because of pollution concerns.
What is the test statistic : A communications professor at a university believes this percentage is higher among community college students. She selects 362 community college students

Reviews

Write a Review

Basic Statistics Questions & Answers

  Identify the correct term for the type of bias being defined

Identify the correct term for the type of bias being defined. Possible answers are selection bias, nonparticipation bias, and response bias.

  Simulation to analyze the operation of his shop

Richard Collins, manager and owner of Richard's Tire Service, wishes to use simulation to analyze the operation of his shop. One of the activities to be included in the simulation is the installation of automobile tires (including balancing the ti..

  Mean sales calls using analysis of variance

Using Analysis of Variance (ANOVA) test at 5% level if there are important differences in mean sales calls made across the three branches.

  Scope of forecasting performance

What is the purpose of regression modeling in the scope of forecasting performance?

  Determine that none of the employees are absent

Determine the probability of randomly selecting 10 production employees on hot summer day and determining that none of them are absent?

  Con?dence interval for the variance

Find a 98% con?dence interval for the variance σ2 of rates of return. Use this to ?nd the con?dence interval for the population standard deviation, σ.

  Find expected value and standard error for difference

A coin is tossed 100 times. The difference "number of heads - number of tails" is like the sum of 100 draws from one of the following boxes. which one, and why?

  Compute posterior probability that the athlete is drug user

In the drug testing, assume there are three possible test results: positive, negative, and inconclusive.

  What is the probability of selecting a male non-drinker

You are recruiting patients from a hospital for a case-control study. There are 2000 patients (1020 male and 980 female).

  Find the proportion of working days

Find the proportion of working days in which anywhere from 750 to 850 tons is mined. Find the probability that on a given day, the yield will be below 665 tons.

  Randomly selected day from distribution of tickets

The university policy department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with mean of 6.0 tickets per day. Find the p..

  What scale is used to measure delivery performance

What scale is used to measure delivery performance? What kind of variable is delivery performance? Construct a frequency table for delivery performance for last month.

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