posted by .

A number of grade school students were asked about their perceived math ability and the results are in the table below.

Below Average = BA
Average = A
Above Average = AV
Girls 61 54 21
Boys 43 61 42

Test at the 0.01 level if there is a difference between girls and boys with respect to their perceived math ability.

  • Statistics -

    Use the Chi-square (X^2) method.

    X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency.

    ∑ = sum of all the cells.

    E = (column total * row total)/grand total

    df = n - 1, where n = number of cells

    Look up value in X^2 table in the back of your textbook.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    In his NPR radio program "A Prairie Home Companion," Garrison Keillor describes the mythical town of Lake Wobegon as a place where "all the women are strong, all the men are good-looking, and all the children are above average." The …
  2. working with data

    josephs final averages in science class are shown in the table below. homework % toward final grade-20% average-93 quizzes % toward final grade-20% average-92 tests % toward final grade-40% average-85 final exam % toward final grade-20% …
  3. Math - average grade

    Does anyone know how to calculate average point grade?
  4. statistics

    Employees are evaluated as below average, average, or above average. What level of measurement is this?
  5. Probability and statistics

    The probability that the life time of randomly chosen device is below average, average,above average are respectively 0.2,0.5,0.3. The probability that of the 3 randomly chosen devices lifetimes of 2 are above average and 1 below average …
  6. Probability and statistics

    5. The probabilities that the lifetime of a randomly chosen device is below average, average, above average are respectively 0.2, 0.5, and 0.3. The probability that the 3 randomly chosen devices lifetimes of 2 are above average and …
  7. Computer Programming

    Professor Merlin has asked you to help him. He has 100 total students in his four classes but he is not sure that all of them took his last exam. He wants to average the grades for his last exam in four sections of his medieval literature …
  8. Maths

    In a class of 75 students,15 are above average,45 are average and the rest below average achievers.The probability that an above average achieving student fails is 0.005,then an average achieving student fails is 0.05 and the probability …
  9. math

    Suppose the daily high temperature in a town is 3 degrees above average one day, then 5 degrees below average the next day, then 2 degrees above average, then 1 degree below average, then 6 degrees above average, then equal to the …
  10. Math

    Mrs. Bryant has a 1-year-old son who is 62.5 cm tall. Mrs.bryant want to see if her son's height is above or below average. She has a table of average heights for children the table shows the average height for a boy of that age is …

More Similar Questions