Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Probability using normal distribution.

An accounting firm is planning for the next tax preparation season. From last year's returns, the firm collects a systematic random sample of 100 filings. The 100 filings showed the average preparation time of 90 minutes with a standard deviation of 140 minutes.

1. The intelligence Quotient test scores normally distributed with a mean of 100 and a standard deviation of 15. What is the possibility that a person would score 130 or more on the test?

2. What is the probability that a person would score between 85 and 115?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M919867

Have any Question? 


Related Questions in Statistics and Probability

Consumer reports provided extensive testing and ratings for

Consumer Reports provided extensive testing and ratings for more than 100 HDTVs. An overall score, based primarily on picture quality, was developed for each model. In general, a higher overall score indicates better per ...

Do men and women select different breakfasts the breakfasts

Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place is shown inTable 11.55. Conduct a test for homogeneity at a 5% level of significance. F ...

1 an investigator wants to determine if a new program aimed

1. An investigator wants to determine if a new program aimed at reducing the overall number of pregnancies in a highly populated area is effective (reducing average births below 6 per household). In order to carry out th ...

1 what is the relationship between confounding and internal

1. What is the relationship between confounding and internal validity? 2. What are experimenter expectancy effects, and how do researchers minimize them? 3. Should demand characteristics be eliminated or strengthened in ...

Microcomputer components a staff analyst for a manufacturer

Microcomputer components. A staff analyst for a manufacturer of microcomputer components has compiled monthly data for the past 16 months on the value of industry production of processing units that use these components ...

1 if the independent variable has absolutely no effect on

1. If the independent variable has absolutely no effect on the dependent variable, will the means of the experimental conditions be the same? Why or why not? 2. An ANOVA for a one-way design partitions the total variance ...

Imagine that you conduct a study to test the average level

Imagine that you conduct a study to test the average level of guilt experienced by Christians, Jews, Buddhists, Muslims, and Hindus. Could you use an ANOVA to analyze your data? Why or why not?

1 what value of cronbachamp39s alpha coefficient indicates

1. What value of Cronbach's alpha coefficient indicates acceptable interitem reliability? 2. Why are researchers sometimes not able to test the reliability of their measures? 3. What steps can be taken to increase th ...

Assume that womens heights are normally distributed with a

Assume that women's heights are normally distributed with a mean given by mu equals 63.3 in, and a standard deviation given by sigma equals 3.1 in. Complete parts a and b. a. If 1 woman is randomly selected, find the pro ...

A researcher conducted an experiment to examine the effects

A researcher conducted an experiment to examine the effects of distracting noise on people's ability to solve anagrams (scrambled letters that can be unscrambled to make words). Participants worked on anagrams for 10 ...

  • 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