4.72 Analysis of bottled water. Is the bottled water you'redrinking really purified water? A study of various brandsof bottled water conducted by the Natural ResourcesDefense Council found that 25% of bottled water is justtap water packaged in a bottle (www.nrdc.org). Considera sample of five bottled-water brands, and let x equal thenumber of these brands that use tap water.NW a. Explain why x is (approximately) a binomial randomvariable.b. Give the probability distribution for x as a formula.c. Find P(x = 2).d. Find P(x ≤ 1).

Answered: Image /qna-images/answer/82d03ac8-3571-4af4-bef2-8f998b6e1096.jpg

Answered: 4.72 Analysis of bottled water. Is the…

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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1.18 Cats on YouTube. Suppose you want to estimate the percentage of videos on YouTube that are cat videos. It is impossible for you to watch all videos on YouTube so you use a random video picker to select 1000 videos for you. You find that 2% of these videos are cat videos. Determine which of the following is an observation, a variable, a sample statistic (value calculated based on the observed sample), or a population parameter
State the estimated coefficient for time and its interpretation. Also, state what the coefficient of determination is and its interpretation.
3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
About 4% of the population has a particular genetic mutation. 600 people are randomly selected. Find the mean for the number of people with the genetic mutation in such groups of 600. Submit Question acer
7. Wondering if there is a connection between a person's height and the number of tattoos they have, Mac asks 50 people how tall they are and how many tattoos they have. What type of study was used? a. Experimental b. Observational
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