n a survey of 2541 adults aged 18 years and older, 55% of respondents claimed that it was easier to make friends in person, whereas 45% thought that it was easier to do so through social-networking sites. Assuming that these results apply to the entire adult population, what is the probability that at most 3 out of 6 adults chosen at random hold the opinion that it is easier to make friends through social-networking sites? (Round your answer to four decimal places.)

n a survey of 2541 adults aged 18 years and older, 55% of respondents claimed that it was easier to make friends in person, whereas 45% thought that it was easier to do so through social-networking sites. Assuming that these results apply to the entire adult population, what is the probability that at most 3 out of 6 adults chosen at random hold the opinion that it is easier to make friends through social-networking sites? (Round your answer to four decimal places.)

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...

See similar textbooks

Similar questions

According to a study on teenage shopping behavior, it was found that 75% of female teens regularly shop in stores rather than shopping online. If a group of 6 female teenagers are selected at random, what is the probability that at least 3 of them regularly do their shopping in stores? (Round your answer to four decimal places.)
A group of 11 students' cholesterol levels are tested. Suppose the probability of a student having a healthy cholesterol level is 0.25. What is the probability that exactly seven out of 11 students have healthy cholesterol levels? (Round your answer to three decimal places.)
A sample of 400 adults found that 82 have high blood pressure. However, 98 of those studied reported being unwilling to change their diet. Based on this sample, if an adult is chosen at random, what is the probability that he or she is open to trying to eat more healthfully? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
A survey showed that 83% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 18 adults are randomly selected, find the probability that at least 17 of them need correction for their eyesight. Is 17 a significantly high number of adults requiring eyesight correction? ... The probability that at least 17 of the 18 adults require eyesight correction is (Round to three decimal places as needed.)
In a random sample of 23 cars brought in for repairs, the mean cost of repairs was $349.00, with a standard deviation of $38. Construct a 95% confidence interval for the population mean. Assume that auto repair costs are normally distributed. $333.47 to $364.53 $333.47 to $364.53 $326.99 to $371.01 $326.99 to $371.01 $326.00 to $372.00 $326.00 to $372.00 $332.57 to $365.43
According to Harper's Index, 45% of all federal inmates are serving time for drug dealing. A random sample of 15 federal inmates is selected.(b) What is the probability that 2 or fewer are serving time for drug dealing? (Round your answer to three decimal places.)
1000 us adults were asked about their online vs. in store clothes shopping. One finding was that 32% of respondents never clothes-shop online. How do I find the probability that the pecentage of respondents who never shop online is below 33.3%
A survey showed that 79% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 15 adults are randomly selected, find the probability that at least 14 of them need correction for their eyesight. Is 14 a significantly high number of adults requiring eyesight correction? The probability that at least 14 of the 15 adults require eyesight correction is nothing. (Round to three decimal places as needed.)