statistics

Please analyze the following data using the T-test for Unpaired data:

A school district wants to determine if the girls are equal to boys in test scores. They took a random sample of 22 8th grade girls and 24 8th grade boys. The district looked at recent CAT scores and found the mean score for girls to be xbar1 = 25 and the mean score for boys to be xbar2 = 26. The standard deviation for the girls is s1 = 2.2 and for the boys the standard deviation is s2 = 3.4. Is the school district correct in assuming the girls are equal in performance to boys. They are 95% sure their assumption is correct.

  1. 👍 0
  2. 👎 0
  3. 👁 170

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    1.What are the mean,median,mode and range of the data set given the altitude of lakes in feet:-9,-36,-23,-8,-17,-52,-27,and-36? 2.Given the data 21,13,13,37,13,23,25,15 a.What is the outlier in the data? b.what is the mean with

    asked by stupid lame fat on April 9, 2017
  2. Data Gathering and Inference

    When the production manager finds the average life of her bulb-lifetime data, it is an example of what phase of inferential statistics? A. Data organization. B. Data gathering. C. Data analysis. D. Probability-based inference.

    asked by Tifini on May 8, 2013
  3. IT

    A project has been defined to contain the following list of activities along with their required times for completion. Activity No. Activity Time (Weeks) Immediate Predecessors 1 Colect requirements 2 - 2 Analyze processes 3 1 3

    asked by GaPeach2909 on May 26, 2012
  4. math

    The given box plots show the number of text messages Paul and Sally received each day on their cell phones. Select the true statement. A. The interquartile range of Paul's data is less than the interquartile range of Sally's data.

    asked by charles on May 21, 2019
  5. Math

    Mr. Wong is a history teacher. In order to study how his 1st period class did on a 100-point test, he made the stem-and-leaf plot shown. Twenty-five students took the test. What conclusion can be drawn about the distribution of

    asked by Connexus questioner on April 10, 2020
  1. science

    What is the correct order of the steps used in the scientific method? (1) conduct background research (2) formulate a hypothesis (3) pose a question (4) test the hypothesis (5) analyze the data and draw a conclusion (6)

    asked by anon on December 16, 2019
  2. statistics

    4. A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week. The student gathers information from a random sample of male and female students

    asked by Ashley on October 1, 2012
  3. Math homework Help Please

    Hii so, I'm on my 5th mental breakdown Today and Its only 9:00 today, and as I know most of you don't care what so ever about what I'm going through and you all have your own problems but I'm honestly horrible at math and this is

    asked by Mad on April 16, 2018
  4. Chemistry

    How can you find out how many unpaired electrons are present in gaseous Co3+ ion in its ground state? According to the NBS Circular 467 "Atomic Energy Leves", Co(3+) has 24 electrons with structure 1s(2), 2s(2), 2p(6),3s(2),

    asked by Vic on August 3, 2007
  5. statistics

    A leading company chemically treats its product before packaging. The company monitors the weight of product per hour that each machine treats. An SRS of 90 hours of production data for a particular machine is collected. The

    asked by appy on November 2, 2012
  6. Math

    Find the mean of the data set. If necessary, round to the nearest tenth. 15.8, 14.9, 17.6, 13.4. A) 15.7 ***** B) 16.2 C) 16.7 D) 19.6 Erin wrote the following set of numbers. 37, 22, 37, 19, 34, 22, 37, 22, 32, 26, 30, 22 What is

    asked by Jeremiah on October 16, 2018

You can view more similar questions or ask a new question.