statistics

posted by .

Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals).
P(z -1.0)


P(z -1.0)


P(z -1.5)


P(z -2.5)


P(-3 < z 0)

  • statistics -

    P(z <-1.0) = 0.1587


    P(z <-1.5) = 0.0668


    P(z <-2.5) = 0.0062


    P(-3 < z < 0) = 0.500-0.0013

  • statistics -

    Jim Tree sells Christmas trees. The mean length of the trees purchased was 68 inches with a standard deviation of 10 inches. Jim wants to know what per cent of his sales were more than 84 inches tall. He can use the standard normal distribution to help him.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. random variables

    For the standard normal random variable Z, compute the following probabilities. For the following problems, use four decimal places. 16. P (0 ¡Ü Z ¡Ü .9) 17. P (-1.3 ¡Ü Z ¡Ü 0) 18. P(Z > 2.5) 19. P(Z ¡Ý -.75) 20. P(Z < …
  2. random variables

    For the standard normal random variable Z, compute the following probabilities. For the following problems, use four decimal places. 16. P (0 less than or equal to Z less than or equal .9) 17. P (-1.3 less than or equal to Z less than …
  3. Math

    Random variable X is normally distributed with mean 10 and standard deviation 2. Compute the following probabilities. a. Pr(X<10) b. Pr(X<11.04) I don't know where to start.
  4. statistics

    All deal with a random variable X that follows a normal probability distribution with mean equal to 37 and a standard deviation of 5. Compute P(X < 39) Compute P(X < 29 or X > 41) Compute P(X > 30) Find the 42nd percentile …
  5. statistics

    All deal with a random variable X that follows a normal probability distribution with mean equal to 37 and a standard deviation of 5. Compute P(X < 39) Compute P(X < 29 or X > 41) Compute P(X > 30) Find the 42nd percentile …
  6. statistics

    Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). P(z -1.0) P(z -1.0) P(z -1.5) P(z -2.5) P(-3 < z 0)
  7. statistics

    Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). P(z -1.0) P(z -1.0) P(z -1.5) P(z -2.5) P(-3 < z 0)
  8. statistics; emergency please help me

    Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). c. P(z -1.5) d. P(z -2.5)
  9. statistics; emergency please help me

    Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). a. P(z -1.5) b. P(z -2.5)
  10. statistic

    Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). 1. P(-1.92 ≤ z ≤ 0.43) 2.P(0.57 ≤ z ≤ 1.24) 3.P(-1.75 ≤ z ≤ -1.02)

More Similar Questions