+NGLSync Portal Ho... Edgenuity for Stude... SIS Login | Edgenui.... 1OSI Model ApWhat percent of students passed the midterm?O 10%O 50%O 70%Ⓒ 62%Done3112-02-12-01_studentdoc.pdfA-Edgenuity.com Xcom/player/tal? Course Home MindTap - Cengage...Using Normal Distribution to Calculate PercentsThe grades on a midterm were Normally distributed witha mean of 120 and a standard deviation of 17. Thepassing score was 111 or higher.Use the z-table to answer the question.IntroDOWW2 of 10

GivenMean(μ)=120standard deviation(σ)=17

Answered: The grades on a midterm were Normally…

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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During a meteor shower, Hannah counts how many meteors she sees each minute. During the first 5 minutes she sees 6, 4, 10, 3, and 7 meteors. If she sees 10 meteors in the next minute, how does this affect the mean and the standard deviation of the data? Both the mean and standard deviation would increase. The mean would decrease while the standard devaition increases. O The mean would increase while the standard deviation decreases. Both the mean and standard deviation would decrease.
Many college admissions want to know your class percentage in addition to your grades. The grades are normally distributed. A certain university insists that a student place in at the 90th percentile. if the mean is 79.45 and the standard deviation is 5.37, what is the 90th percentile? a.88.07 b.85.01 c.86.33 d.90
Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The standard deviation of students lab measurements is o= 8 milligrams. Juan repeats the measurement 2 times and records the mean x of his 2 measurements. What is the standard deviation of Juan's mean result?
The local ranger station tracked and tagged 2,844 adult female black bears in a national park. A random sample of 9 adult female black bears from those tagged had an average body weight of 203 pounds with standard deviation 25 pounds. Which of the following is a point estimate for the population mean weight of all female black bears that are tagged? A 9. C 25 D 203 2,844
Find the mean, variation, and standard deviation
One hundred teachers attended a seminar on mathematical problem solving. The attitudes of representative sample of 12 of the teachers were measured before and after the seminar. A positive number for change in attitude indicates that a teacher's attitude toward math became more positive. The twelve change scores are as follows. 4; 7; −1; 1; 0; 5; −2; 2; −1; 6; 5; −3 Part (a) What is the mean change score? (Round your answer to two decimal places.)
Your cat weighs 13 lbs. If the mean for weight of cats is 10 pounds and the standard deviation is two pounds, what percentage of cats weigh more than your cat? Round to the nearest hundredth of a percent. Example: 0.0125 would be written as 1.25% Answer = Blank 1% of cats weigh more than your cat
In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores fall between 71 and 83. What are the mean and standard deviation for this data?
A student earned grades of 74, 75, 79, and 91 on her four regular tests. She earned a grade of 75 on the final exam and 84 on her class projects. Her combined homework grade was 86. The four regular tests count for 40% of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%. What is her weighted mean grade? 80.0 80.6 80.5 81.1
In a psychology class, 40 students have a mean score of 89.5 on a test. Then 24 more students take the test and their mean score is 78.3.What is the mean score of all of these students together? Round to one decimal place.
Biology A biologist found the wingspans of a group of monary butterflies to be normally distributed with a mean of 52.2 mm and a standard deviation of 2.3 mm. What percent of the butterflies had a wingspan between 50 and 55 mm?
In a certain population, the mean score on a test is 420. The standard deviation is 105. If the distribution or scores is normal, which of these scores should occur most often. a. 385 b314 c. 540 d. 526

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The grades on a midterm were Normally distributed with a mean of 120 and a standard deviation of 17. The passing score was 111 or higher. Use the z-table to answer the question. What percent of students passed the midterm? O 10% O 50% O 70% O 62%