Question: please solve this Problem 3: 20 points = [5 + 5 + 5 + 5] Instructors assume that test scores follow (approximately) normal distribution, N

please solve this

Problem 3: 20 points = [5 + 5 + 5 + 5] Instructors assume that test scores follow (approximately) normal distribution, N [68, 10]. Thus if X is a score of a randomly selected student, then X~N[,u=68, 0:10] Answer questions below using XtoZ and Z-toX conversion rules. 1. Find preportion of students with scores within the interval 50 g X S 75 2. What X -values corre3pond to z-scores equal to :|:1.96 3. Determine the chance that a randomly selected student has score above 60. 4. What preportion of students' scores would be in the interval (68 S X S 82)? Solution

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Colin took an Economics test whose mean was 80 and standard deviation was 5. Colin's score was 2 standard deviations below the mean. What was Colin's score, rounded to the nearest whole number, if...

Can someone please help with these statistic problems, i would really appreciate it if you can help me with all. If you have any questions please let me know thank you . 1. which z-score is more...

Can someone please help me with some statistics questions i am very confused. please help answer all questions i would truly appreciate it. let me know if you have any questions. thank you ............

hi, i need a summary for this article in two three pages please . Event Studies Methodology Frank de Jong Tilburg University January 2007 Lecture notes written for the course Empirical Finance and...

Hi i need some help with some extra practice problems. please let me know if you have any questions. This is for my own personal learning this is not a homework assignment, or exams so please stop...

Question 3: Case study: Excel Logistics Services Use the workbook ExcelLogistics.xlsx to answer this question. Supporting material for the case: p -Charts in Statistical Process Control (SPC) Used...

i need this answers please! Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Group 8 Group 9 Group 10 Students required and cut 50 spacer for their project. The required length was 1.000" +/-...

Please answer this question Problem 1: 20 points = [5 + 5 + 5 + 5] A group of n = 36 engineers was selected for the study of their IQ scores. Researchers assume that individual records are normally...

8 questions, some with parts 1. IQ Score Invest in market No. Investment Totals 1 893 4,682 5,575 2 1,327 8,959 10,286 3 2,110 9,519 11,629 4 5,387 19,584 24,971 5 8,108 24,602 32,710 6 10,121 20,108...

Let us consider the linear probability model y = #1a1 + X202 +e, where y is a binary variable. The matrix X = [ai : X2) is full column rank and E(e|X) = 0. We obtain a random sample {(yi, Til, 2), i...

You have been asked to come in and train a group of employees in an actual classroom environment with a training focus on one of the following broad topics: safety on the factory floor customer...

upaya-upaya yang harus dilakukan oleh aPT Sehat Sentosa, perusahaan yang bergerak di bidang penjualan peralatan kesehatan, menyajikan laporan keuangan tahun 2025 yang mencantumkan beberapa jenis...

Required information Problem 6-2B Calculate ending inventory, cost of goods sold, sales revenue, and gross profit for four inventory methods (LO6-3, 6-4, 6-5) [The following information applies to...