Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

In Dallas, some fire trucks were painted yellow (instead of the red) to heighten their visibility. Throughout a test period, the fleet of red fire trucks made 153,348 runs and had 20 accidents, while the fleet of yellow fire trucks made 135,035 runs and had four accidents. At α = .01, did the yellow fire trucks have significantly lower accident rate?

a) Describe the hypotheses.

b) Describe the decision rule and sketch it.

c) Find out the sample proportions and z test statistic.

d) Make decision.

e) Find out the p-value and interpret it.

f) If statistically significant, do you think the difference is large enough to be significant? If so, to whom, and why?

g) Is the normality assumption fulfilled? describe.

Accident Rate for Dallas Fire Trucks 
Statistic Red Fire Trucks Yellow Fire Trucks 
Number of accidents x1 = 20 accidents x2 = 4 accidents 
Number of fire runs n1 = 153,348 runs n2 = 135,035 runs

 

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M916875

Have any Question? 


Related Questions in Statistics and Probability

The umuc minimart sells five different types of coffee mugs

The UMUC MiniMart sells five different types of coffee mugs. The manager reports that the five types are equally popular. Suppose that a sample of 500 purchases yields observed counts 110, 100, 110, 100, and 80 for types ...

1 all successful empires share certain characteristics what

1. All successful empires share certain characteristics. What are these characteristics and how do they relate to the rise of the Muslim empires? Put Islam in its historical context and explain how the Umayyad and Abbasi ...

Repeat given exercise using the following solution concept

Repeat given Exercise, using the following solution concept: divide the estate in a continuous manner equally between the creditors, until one (or more) of the creditors has received his or her entire claim. Continue to ...

Please explain every step to make the sum understandableit

Please explain every step to make the sum understandable. It has been hypothesized that the distribution of seasonal colds in Canada is as follows: Season          Percentage Fall                    35% Winter            ...

Consider the following system of preferences recall that

Consider the following system of preferences (recall that the preferences of the women appear in the lower right side of each cell (read vertically) and the preferences of the men appear on the upper left side (read hori ...

It is noted that research falls into four basic categories

It is noted that research falls into four basic categories, depending on whether the goal is to describe patterns of behavior, thought, or emotion (descriptive research); to examine the relationship among naturally occur ...

The probability that a light bulb of a given brand is

The probability that a light bulb of a given brand is faulty is .1. You want to find the probability that fewer than 5% of a shipment of 1000 light bulbs is faulty. Use the Binomial Distribution to determine this.

According to a study conducted by dell computers 65 of men

According to a study conducted by Dell Computers, 65% of men and 70% of women say that weight is a very important factor in purchasing a laptop computer. Suppose this survey was conducted using 374 men and 481 women. Do ...

Ron and veronica need to choose a name for their newborn

Ron and Veronica need to choose a name for their newborn daughter. After giving the matter much thought, they have narrowed the list of possible names to four: Abigail, Iris, Irene, and Olga. They now must choose one nam ...

The percentage of people with advanced degrees is 165 on

The percentage of people with advanced degrees is 16.5% on average if 1000 people are randomly selected what is the probability that the percentage of these poeple with advanced degrees is between 17% and 18.5%?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro