bquisha JacksonStats RM Bell Ringer2nd peñiod01/07/22111. What is the total area under the curve for a standard normal distribution?2. In a standard normal distribution, what percentage of the area falls below themean?3. In a standard normal distribution, what percentage of the area under the curve fallswithin 1 standard deviation of the mean? What percentage of the area falls within2 standard deviations of the mean?34D.34134. Assuming a standard normal distribution, what is the area under the curve betweenthe mean and the z-value of 2.24?5. Assuming a standard normal distribution, what is the area under the curve abovethe z-value of 1.34?6. Assuming a siandard normal distribution, what is the area under the curve that isbetween -1.36and + 1.42 z-values away from the mean?7. Assuming a standard normal distribution, what is the area under the curve that isabove 1.28 /z-values away from the mean?39971.28

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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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in a normal distribution with the mean of 15 and standard deviation of 3 what does a z score of -2 indicate? a. it indicates that the score is below the mean b. it indicates that the score is equal to 9 c. it indicates that the difference between the score and the mean is 6 d. all of the above
Why is it correct to say "a" normal distribution and "the" standard normal distribution? Describe the cases in which the different terms are used. Choose the correct answer below. O A. "The" standard normal distribution is used to describe one specific normal distribution (u =0.g=1). "A" normal distribution is used to describe a normal distribution with any mean and standard deviation. O B. "The" standard normal distribution is used to describe the normal distribution with any mean and standard deviation. "A" normal distribution is used to describe one specific normal distribution (p = 0, 0 = 1). O C. "The" standard normal distribution is used in cases where all of the data values are known (population), "A" normal distribution is used in cases where only a portion of the data is known (sample). O D. There is no difference between "A" and "The" normal distribution. The terms can be used interchangeably. Next Textbook Calculator 6:45 PM 耳 74°F Clear AO x 10/3/2021 Type here to search…
Consider the normal curve in the figure to the right which ustrates the relative frequencies in a distribution of systolc biood pressures for a sample of female students The destribution has a standard devation of 15 60 75 00 105 120 135 150 Blood pressure a. What is the mean of the destribution? Choose the correct answer below OA 105 OB 90 OC 95 OD 115 b. Estimate the percentage of students whose blood pressure is less than 90 Choose the correct answer below A 84% OB 100% O c. 47% OD. 16% CEstmate the percentage of students whose blood pressure is between 100 and 120, Choose the correct answer below OA 100% OR 84% OC 47% OD. 16% d. Estimate the percentage of students whose blood pressure is greater than 120. Choose the correct answer below. OA 16% OB 47% OC 100% OP 84%
A normal distribution has a mean of 19 and a standard deviation of 5. Use the 68-95-99.7 rule to find the percentage of values in the distribution below 9. F What is the percentage of values in the distribution below 9? % (Type an integer or a decimal.)
Example 1 : Find the probability of drawing 2 red balls in succession from a bag containing 4 red and 5 black balls when the ball that is drawn first is (i) not replaced (ii) replaced.
7. What percentage of z-scores in the standard normal distribution are less than z = 2.36?
Systolic blood pressure readings are normally distributed with a mean of 121 and standard deviation of 15. If a person from the population was selected at random, find the probability that their blood pressure is in the acceptable range (between 114 and 140) for an athletic activity. A. Label and shade the normal distribution curve to model this problem.
11. Find the percentage from the standard normal tables for the following: [4 pt each] a) below z = 2.05 ____A______ (A) 97.98 (B) 99.38 (C) 2.02 (D) 47.48 b) between z = 0 and z = 3.00 _____D_____ (A) 99.87 (B) 50 (C) 149.87 (D) 49.87 c) above z = –1.00 _____B_____ (A) 34.52 (B) 84.13 (C)15.87 (D) none
The average score for games played in the NFL is 22.4 and the standard deviation is 9.1 points. 43 games are randomly selected. Round all answers to 4 decimal places where passible and assume a normal distribution. a. What is the distribution of 2- N b. What ks the distribution of - N C. P(E > 22.3185) = d. Find the 60th percentile for the mean score for this sample size. e. P(21.0185 < I< 23.6939) - f. Q1 for the I distribution g. P S 951.0955)- h. For part c) and e), is the aSsumption of normal necessary? ONOO Yes
Consider the normal curve in the figure to the right, which illustrates the relative frequencies in a distribution of systolic blood pressures for a sample of female students. The distribution has a standard deviation of 13.
A normal distribution has mean 55.955.9 and standard deviation 2.582.58. Find the data value corresponding to z equals negative 3.91z=−3.91. The data value is enter your response here. (Round to the nearest tenth as needed.)
Given the diagram of the shaded region under the Standard Normal Distribution curve below, find the z-score that would be the cutoff for the shaded region. [ In case the image does not load, the image shows an area of 0.2245 to the LEFT of the missing z-score ] Find the missing z-score. Show how you calculated your result here (type in what you typed on your calculator or computer, the function used on the calculator/computer with value input, etc) Calculation: __________ Now type in your final rounded answer, round your answer to two decimal places. z = ___________

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