Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

To find the probability values increase of raw data, binomial, normal.

A biology teacher had noted that the scores on a standard examination attained by students from her past classes had a mean of 74 and a standard deviation of 14. The teacher decided to use a new book. She supposed this would increase the mean, other than that the standard deviation would remain at 14. Using new book, a class of 50 students scored a mean of 76 on the standardized examination.
  (i) Find the probability that a class of 50 students using the new book will have a (sample) mean as large as or larger than 76 if the new book were equivalent to the old book (i.e., if U= 74 and O = 14 for all students using the new book).
  (ii) Do you think that there is evidence to support the teacher's claim that the new book is superior? {Hint: use part (a).}

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922997

Have any Question? 


Related Questions in Statistics and Probability

1 in stepwise regression why might a predictor variable

1. In stepwise regression, why might a predictor variable that correlates highly with the criterion variable not enter into the regression equation? 2. Explain how you would use regression analysis to see whether variabl ...

Scenario dr olson is interested in the effects of three

Scenario: Dr. Olson is interested in the effects of three different methods for losing weight in long-distance truck-drivers. He tested a sample of 60 truck drivers. Participants were randomly assigned to one of three gr ...

Develop a research question that addresses one of the

Develop a research question that addresses one of the unknowns in the question: Positive interactions between the CEO and board members lead to enhanced and better performance of the Corporation . Address the following 1 ...

Data mining review questions - xlminer labs - cluster

Data Mining Review Questions - XLMiner Labs - Cluster Analysis1. Marketing to Frequent Flyers. The file EastWestAirlinesCluster.xls contains information on 4000 passengers who belong to the airline's frequent flier progr ...

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 ...

1 a researcher has developed the hypothesis that teenagers

1. A researcher has developed the hypothesis that teenagers are better able to learn about and remember technological information than are older adults, whereas older adults are better able to remember information about ...

What is voter suppression in america write one page

What is voter suppression in America. Write one page explaining voter's suppression.

1 why can it be argued that the formula for calculating r

1. Why can it be argued that the formula for calculating r should be named the Edgeworth, rather than the Pearson, correlation coefficient? 2. Why may we not interpret or discuss a correlation coefficient that is not sta ...

Paper should be between 800 and 1000 words in length it is

Paper should be between 800 and 1,000 words in length. It is due according to the due date on the course calendar. 1. Drawing on the readings and lectures, name at least three developments or factors that encouraged the ...

Listed below is a list of how long it takes for bands on

Listed below is a list of how long it takes for bands on stage to complete their first song (in seconds). 538 312 327 309 344 313 318 315 325 331 312 314 What is the mean time it takes for bands on stage to complete thei ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen