d. z = -0.77%3Dons. Ofe for40%,6. Find each of the following probabilities for a normaldistribution.alla. p(z > 1.25)b. p(z > -0.60)c. p(z < 0.70)d. p(z <-1.30)urchase11 get noyldiatrihution is located

Required probability is P(Z>1.25)

Answered: . Find each of the following…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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3. Given the following discrete probability distribution, x P (x) |42 0.375 65 0.15 70 0.225 75 0.05 90 0.2 a. Calculate the expected (average) value of x. b. Calculate the variance of x c. Calculate the standard deviation of x.
Consider the following back-to-back stemplot: 0 348 1 01256 2 29 843 65210 3 2557 92 4 7552 6 1458 7 09 8541 8. 90 9 Which of the following are true statements? I. The distributions have the same mean. II. The distributions have the same range. III. The distributions have the same standard deviation.
Suppose the income of workers at your job follows a normal distribution. If you standardize their income, what is P(Z≤0)? a.0.5 b.0 c.more information is needed to answer this question. d.1
The randon variable X has a uniform distribution on the interval 0 < X < 5. A. Graph the probability distribution. B. Calculate the mean u. C. Calculate the standard deviation o. (unable to create the sign)
BA variable of a population has a mean of = 100 and a standard deviation of o = 49. a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean and standard deviation b. For part (a) to be true, what assumption did you make about the distribution of the variable under consideration? A. Normal distribution. B. Uniform distribution. C. No assumption was made. c. Is the statement in part (a) still true if the sample size is 16 instead of 49? Why or why not? A. No, the sampling distribution of the sample mean is never normal for sample size less than 30. B. No. Because the distribution of the variable under consideration is not specified, a sample size of at least 30 is needed for part (a) to be true. C. Yes, the sampling distribution of the sample mean is always normal.
c. mean is 1 and the standard deviation is 0. O d. mean and the standard deviation can have any value. QUESTION 2 Which of the following is a characteristic of the standard normal probability distribution? a. The mean, median, and the mode are not equal b. The distribution is not symmetrical c. The standard deviation must be 0 d. The standard deviation must be 1 Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Could you please answer d and e.
The following data are the number of hours spend by a student who plays online games for a week. Solve for the mean C ), variance ) and standard deviation (! of the probability distribution table. Show its histogram 1 3 4 P(X) 0.05 0.2 0.3 0.2 0.1 0.05 0.1
As shown below are two normal curves. Let and o be the mean and the standard deviation of curve A (the more peaked curve) and Hg and og be the mean and the standard deviation of curve B (the broader curve). What do you observe about these two normal curves? P(x) 0.4 A 0.3 0.2 0.1 0.0 2 4 6 10 2 14 Select one: a. All statements are true. b. The mean of both curves is 8. Symbolically, HA = HB = 8. c. Both curves are symmetric with respect to their means. O d. Curve A has a lower standard deviation than Curve B. Symbolically, oA 8.
Please answer. Thank you!
2.Assume T is a random variable representing time, with an exponential distribution and a mean of 21. Find the probability P(T <= 21).
1. For a normal distribution, find the percent of scores that lie between the scores having z values of z = -4 and z = 6

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. Find each of the following probabilities for a normal distribution. a. p(z > 1.25) b. p(z > -0.60) c. p(z <0.70) d. p(z < -130) ted