Example 4. In a survey of 2000 mobile it was found that 1700 users likedNokia and 1500 users liked Motorola. What is the least number that must haveliked both the products?

In question, Given that in a survey of 2000 mobile it wa found that 1700 users liked Nokia and 1500…

Answered: Example 4. In a survey of 2000 mobile…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A fundraiser is offering a small gift to people making a donation. The donor can choose one of four gifts: a mug, a t-shirt, a plush toy, or a water bottle. The fundraiser would like to know if any of the gifts were more or less popular or were they equal in preference. The data for n = 40 donors are below:
I need help with 2, 3 and 6.
Example 6. In a survey of 500 students in a college 180 were listed as drinking Tea, 275 as drinking coffee and 95 were listed as both drinking Tea as well as Coffee. Find how many students were drinking neither Tea nor Coffee.
A consumer agency wants to determine which of two laundry detergents, A or B, cleans clothes better. Fifty pieces of fabric are subjected to the same kinds of stains (grass, mud, coffee). Then 25 pieces are randomly assigned to be cleaned with detergent A and the remaining 25 pieces are cleaned with detergent B. After being laundered, the pieces of fabric are rated on a scale from 1–10, with 1 being the least clean to 10 being the most clean. The difference in mean ratings (A – B) was determined to be 1.5. Assuming there is no difference in the two detergents, 200 simulated differences in sample mean ratings are displayed in the dotplot. Using the dotplot and the difference in mean ratings from the samples, is there convincing evidence that the one detergent is better than the other? Yes, because a difference in mean rating of 1.5 or more occurred only 23 out of 200 times, meaning the difference is statistically significant and there is convincing evidence that A is more effective…
A professor wanted to study the number of hours statistics students spend studyingstatistics each week. Out of 19 statistics sections at Santa Ana College, the professorsurveyed each student from 3 randomly selected sections. What is the largest group ofstudents the results of this study can represent?a. All Santa Ana College studentsb. All Santa Ana College students taking a math classc. All Santa Ana College students taking a statistics classd. Students in the three sections the professor surveyed
A survey was conducted at UP Manila where 80 students were randomly asked whether they liked hamburgers or spaghetti for their snacks. 52 of the students say they like hamburgers, 40 like spaghetti and 10 do not like either of the hamburger or spaghetti. How many students like only hamburger or only spaghetti? Answer is
In which year did Tesco have the least number of stores?
Answer the questions below. (a) From the 13 albums released by a musician, the recording company wishes to release 9 in a boxed set. How many different boxed sets are possible? (b) A company has 36 salespeople. A board member at the company asks for a list of the top 3 salespeople, ranked in order of effectiveness. How many such rankings are possible?
a list of the over 2300 Henry Clay high School is compiled. from that list 250 names are randomly chosen and given a survey to complete. of those surveyed 72% said they intended to attend college after completing high school what would the 250 students surveyed would be an example of?
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A 10-yr-old competes in gymnastics. For several competitions she received the following "All-Around" scores: 36.9, 35.4, 38.6, and 35.2. Her coach recommends that gymnasts whose "All-Around" scores average at least 38.1 move up to next level. What "All-Around" scores in the next competition would result in the child being eligible to move up? The child needs a score of (Choose one) V to move up to next level of competition.

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Example 4. In a survey of 2000 mobile it was found that 1700 users liked Nokia and 1500 users liked Motorola. What is the least number that must have liked both the products?