Suppose Z follows the standard normal distribution.calculator. Round your responses to at least three d(a) P(Z ≤ -1.80) = ☐(b) P(Z > 1.41) = 0(c) P(-0.63

Answered: Suppose Z follows the standard normal…

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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You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. A sample of 21 night students and 22 day students and their GPA's are recorded below. Test the claim using a 10% level of significance. Assume the population variances are unequal and that GPAs are normally distributed. Give answers to 4 decimal places. GPA-Night GPA-Day 3.32 3.1 3.22 3.26 3.55 3.25 3.03 3.51 3.22 3.21 3.12 3.05 2.86 3.38 3.32 3.08 3.16 2.88 3.13 3.43 3.15 3.17 3.13 3.26 2.97 2.46 3.3 3.28 3.5 3.19 3.37 3.46 3.88 2.86 3.61 2.89 3.51 2.91 3.11 2.32 3.06 3.16 2.03 What are the correct hypotheses? Note this may view better in full screen mode. Select the correct symbols in the order they appear in the problem.H0: H1: Based on the hypotheses, find the following:Test Statistic=p-value=The correct decision is to .The correct summary would be:…
1. For a normal distribution, find the percent of scores that lie between the scores having z values of z = -4 and z = 6
The test scores for the analytical writing section of a particular standardized test can be approximated by a normal distribution, as shown in the figure. H3.7 (a) What is the maximum score that can be in the bottom 5% of scores? (b) Between what two values does the middle 90% of scores lie? o=0.77 3.7 Score 1.4 (a) The maximum score that can be in the bottom 5% is (Round to two decimal places as needed) (b) The middle 90% of scores lies between (Round to two decimal places as needed.) on the low end and on the high end.
The following is a graph of two normal distributions plotted on the same x-axis. + 14 Based on the graph above, which statement best describes the graph?
2 Use the table below to find the percentage of data items in a normal distribution that lie a. below and b. above a z-score of −0.85. z-score -1.00 -0.95 -0.90 -0.85 -0.80 -0.75 -0.70 Percentile 15.87 17.11 18.41 19.77 21.19 22.66 24.20 z-score -0.65 -0.60 -0.55 -0.50 -0.45 -0.40 -0.35 Percentile 25.78 27.43 29.12 30.85 32.64 34.46 36.32 z-score -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 Percentile 38.21 40.13 42.07 44.04 46.02 48.01 50.00 a. The percentage of data items that lie below the z-score is ______%. b. b. above a z-score of −0.85: ________.
100 103 106 109 112 115 118 Based on the graph of this normal distribution, c. 68% of the data values are between and d. 95% of the data values are between and and e. 99.7% of the data values are between 00 is
accidents in two weeks? Q6- Assume the probability that a maple tree at age 5 grows less than 150 cm is equal to 0.3. If the height of maple trees at age 5 are estimated to be normally distributed with mean u cm and variance 64 cm. find u.
Find the 68th percentile
Q2 6)
Normal Distribution
For each problem below assume the date comes from a normal distribution, Sketch a graph, then find the indicated probability. a. Less than z=0.82 b. Between z=0.4 and z=1.3
(a) The graph shows a Standard Normal Distribution. You are given 1 or 2 z-score(s) and need to shade the area (=probability) corresponding to: P(z > 1.2). Click on the "Shade" menu to select the shading option corresponding to the question [to the left, to the right, or between 2 values]. Then slide the arrow to the appropriate z-score. Shade: Left of a value Click and drag the arrows to adjust the values. -4 -3 -2 -1 2 4 -1.5 (b) Part 2: you are given an area (=probability), and you need to compute c, which is the z-score that corresponds to the statement: P( - c < z < c) (This is an inverse standard normal distribution problem. Use technology to compute c) The arrow can only be dragged to tick marks that are multiples of 0.1 So, round c to 1 decimal place, and then move the arrow to that rounded value. Click on the "Shade" menu to select the shading option corresponding to the question [to the left, to the right, or between 2 values]. (If the question is less c, choose Left of a…

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Suppose Z follows the standard normal distribution. calculator. Round your responses to at least three d (a) P(Z < -1.80) = (b) P(Z > 1.41) = 0 (c) P(-0.63