maths

posted by Khyati

In 2010 a sample of 50 cars was taken, yielding 8 small cars, 27 medium cars and 15 large cars. A sample of 50 cars taken in 2015 revealed 10 small cars, 25 medium cars and 15 large cars. Calculate the chi-squared test statistic here.

  1. PsyDAG

    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

Your Answer

Similar Questions

  1. Math

    The bar graph below shows the numbers of various colors of cars owned by the employees of a certain business. Write five ratios (expressed as fractions in lowest terms) that compare the least popular color to each of the other colors. …
  2. history

    Improved technology in the production of small cars often results in lower production costs. Which of the following will most likely result from these reduced production costs?
  3. math

    Assume that you are to pick 3 cars from the motor pool, which contains 6 subcompact cars, 6 compact cars, and 5 midsize cars. How many ways can you pick the cars so not all are the same size?
  4. math

    For this problem, assume that you are to pick 3 cars from the motor pool, which contains 6 subcompact cars, 6 compact cars, and 5 midsize cars. How many ways can you pick the cars so not all are the same size?
  5. Math-Algebra

    The table shows the amount earned for washing cars. How much is earned for washing 25 cars?
  6. Math

    Yesterday, a parking lot had 60 cars parked in it. Of the cars parked in the parking lot, 40% were silver, 14 were red, and the rest were blue. How many of the cars were blue ( I Picked 6 cars) Answers To Choose:24 cars 38 cars 22 …
  7. langauge arts

    What is the best way to rewrite the following topic to form a focused thesis statement?
  8. social studies

    improved technology in the production of small cars often results in lower production costs?
  9. set maths

    In a survey of cars,it was found DAT 75% were old,65% were small nd 50% had been involved in an accident.8% were accident free large old cars,20% were accident free small new cars, 7% were accident free small old cars,6% were new small …
  10. math

    Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell five cars; nineteen generally sell six cars; twelve generally sell seven …

More Similar Questions