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WJEC A2 Unit 4 Applied Mathematics B overview quiz quiz

14questions. Pick an answer and you'll see why right away.

  1. What is the formula for the conditional probability of A given B?

  2. Events A and B are independent. Which statement is therefore true?

  3. To standardise a value x from N(mu, sigma squared), which formula is used?

  4. For the standard Normal, P(X greater than a) is found from the cumulative function Phi as:

  5. Approximately what percentage of a Normal distribution lies within two standard deviations of the mean?

  6. In a correlation hypothesis test, what is the null hypothesis?

  7. The mean of a sample of size n from N(mu, sigma squared) has which standard deviation?

  8. When testing a correlation coefficient, the sample r is compared with what?

  9. What is the first step in solving a separable differential equation?

  10. A quantity decays at a rate proportional to its amount. Which differential equation models this?

  11. For motion with variable acceleration, how is velocity obtained from displacement?

  12. For a projectile, which statement about the horizontal motion is true?

  13. For a body on a plane inclined at angle theta, the normal reaction equals what?

  14. The moment of a force about a point is calculated as: