Set up a hypothesis test

Assignment Help Basic Statistics
Reference no: EM131475907

Question: A high-school department made a change in its curriculum. One of the instructors in the department suspected that the change would result in a lowering of math skills. Students in the old program showed a mean of 70 points on a mathematics proficiency exam. Forty-two students from the new program had the scores in the dataset MATHEMATICS TEST SCORES (attached). The standard deviation of the all students over the years has been 10.34. Use a 2% level of significance.

a. Set up a hypothesis test

i. State the null and alternative hypothesis

ii. Confidence intervals of scores and the z or t intervals.

b. What are the results of the test (do the data indicate that the new program results in a lowering of math skills).

c. Do a P test. Are the two tests consistent?

d. Should the department us the new curriculum and why?

Reference no: EM131475907

Questions Cloud

Associated with the sunshine ethical framework : Which of the following is a question associated with the "sunshine" ethical framework?
State the null and alternative hypothesis : Set up a hypothesis test - State the null and alternative hypothesis and Confidence intervals of scores and the z or t intervals. Do a P test. Are the two tests consistent
Strategy for reducing claims and premium costs : what would you recommend as a strategy for reducing claims and premium costs?
What word and bit number are represented by given plc : Define the term byte. In a PLC-5, data file 5 is what type of file?
Set up a hypothesis test : A high-school department made a change in its curriculum. One of the instructors in the department suspected that the change would result in a lowering of math skills. Set up a hypothesis test
How much will your investment grow in five years : Your father gave you a gift of $20,000 for good behavior and you wanted to invest in the stock market. How much will your investment grow in five years?
Analyze chicosfas inc 2010 annual report : Analyze Chico'sFAS Inc 2010 Annual Report. In a 2-3 page document, write an overview of the company's functional strategies using the Three Functional Concerns
Write c language programs to input the switch via the master : Assume that two PIC18F4321s are interfaced in the SPI mode. A switch is connected to bit 0 of PORTD of the master PIC18F4321 and an LED is connected to bit 5.
Prepare the best proposal possible : Capital Budget Proposals Discussion- Discuss the various ways that you as manager of your department can ensure that you prepare the best proposal possible.

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Positive linear correlation between number of commercials

Is there reason to believe there is a positive linear correlation between the number of t.v. commercials and the sale of this product?

  Build a 95 confidence interval for the difference in

in independent random sample of male athletes and male nonathletes at a large university we find the following samplae

  Conditions to perform inference in regression

Conditions to perform inference in regression

  Explain observation-parameter and population

Identify the following as either (a) observation, (b) parameter, (c) population, (d) sample, or (e) statistic: All employees at that place of employment.

  Estimate the percent that did not have any dental expense

Shaver Manufacturing, Inc., offers dental insurance to its employees. A recent study by the human resource director shows the annual cost per employee per year followed the normal probability distribution, with a mean of $1,280 and a standard deviati..

  Assume you are in charge of a production line which allows

assume you are in charge of a production line which allows for no more than 1 defectives in order to be in compliance.

  Determine required probability for binomial distribution

A random sample of 20 single men was asked if they would welcome a woman taking the initiative in asking for a date. What is the probability that

  What is the largest value you can use for a random start

What is the largest value you can use for a random start? Using the following list of the first 15 items in your population, a random start of $25,000, and a rounded sample interval of $100,000.

  Convert the given scale data to ordinal or ranked data

Convert the given scale data to ordinal or ranked data, starting with a rank of 1 for the smallest data point.

  Formulate an lp model for problem

A company has $1,00,000 to invest in new R&D projects.  The company wants to determine what set of projects should be selected. The following table summarizes the initial cost and revenue potential for each of the projects.

  Final temperature of the air in the chamber

The walls of a vacuum chamber are punctured so that air (γ = 1.4) can flow in. What is the final temperature of the air in the chamber? Assume the temperature of the atmosphere is 300 K?

  Newspaper or periodical site

Using the Internet, the text, or another reliable source such as a newspaper or periodical site, (not a scholastic or school site like Khan Academy and not Wikipedia), research some important data that has been presented in graph or table format.

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd