ased on a​ poll, 60​% of Internet users are more careful about personal information when using a public​ Wi-Fi hotspot. What is the probability that among three randomly selected Internet​ users, at least one is more careful about personal information when using a public​ Wi-Fi hotspot? How is the result affected by the additional information that the survey subjects volunteered to​ respond?   The probability that at least one of them is careful about personal information is _______________________________ ​(Round to three decimal places as​ needed.)       How is the result affected by the additional information that the survey subjects volunteered to​ respond?   A. The result should not be impacted by this because volunteers are likely to have the most relevant responses.   B. It is very possible that the result is not valid because not everyone uses public​ Wi-Fi.   C. It is very possible that the result is not valid because the sample may not be representative of the people who use public​ Wi-Fi.   D. The result should not be impacted by this because there is no reason to lie when responding.

A study showed that in​ 1990, 47​% of all those involved in a fatal car crash wore seat belts. Of those in a fatal crash who wore seat​ belts, 46​% were injured and 26​% were killed. For those not wearing seat​ belts, the comparable figures were 43​% and 51​%, respectively. Find the probability that a randomly selected person who was unharmed in a fatal crash was not wearing a seat belt.

Use the data in the following table that shows results from a polygraph (lie detector) conducted by researchers Charles R. Honts and Gordon H. Barland. In each case, it was known if the subjects lied or did not lie, so the table indicates when the polygraph was correct.    If two different subjects are randomly selected without replacement, find the probability that they both lied.

In a survey of consumers aged 12 and​ older, respondents were asked how many cell phones were in use by the household.​ (No two respondents were from the same​ household.) Among the​ respondents, 211answered​ "none,"289 said​ "one," 373 said​ "two," 143 said​ "three," and 138 responded with four or more. A survey respondent is selected at random. Find the probability that​ his/her household has four or more cell phones in use. Is it unlikely for a household to have four or more cell phones in​ use? Consider an event to be unlikely if its probability is less than or equal to 0.05.

Do cat owners sleep better than those without cats? To help answer this question, a cat enthusiast obtained a random sample of 500 Canadians, each of whom answered two questions: 1. do you have a cat? (yes or no), 2. How well do you sleep? (good, neutral, bad). The dataset “CatSleep.xlsx” contains her findings.   Find the probability that a randomly selected Canadian is a bad sleeper and a cat owner. Find the probability that a randomly selected Canadian is a neutral sleeper or a cat owner. Find the probability that a randomly selected non-cat owner is a bad sleeper. That is, find the probability that a randomly selected Canadian is a bad sleeper, given they are not a cat owner Can you handwrite the solution?

Based on data from AMSC Online Instruction project, 77% of adult learners use social network sites. If two adult learners are randomly selected, what is the probability that  they use social network

Nine percent of men and .25% of women cannot distinguish between the colors red and green. If six men are randomly selected for a study of traffic signal perceptions, find the probability that exactly two of them cannot distinguish between and red and green

Aleem tossed a coin 50 times and recorded the results in a frequency distribution table. Outcome Frequency Heads 22 Tails 28 What is the experimental probability of tossing a head?

A random sample of 2072 adults was taken, and they were asked if they prefer watching sports, movies, or news on tv. They were also asked if they preferred dogs or cats. Sports Movies News Total Dog 411 328 514 1253 Cat 180 319 320 819 Total 591 647 834 2072 What is the probability that a person selected at random likes dogs and movies? What is the probability that a person selected at random likes cats and news? What is the probability that a person selected at random likes dogs or movies? What is the probability that a person selected at random likes sports or cats?

Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 102 people in the 18-21 age bracket and finds that 87 of them respond and 15 refuse to respond. When 249 people in the 22-29 age bracket are contacted, 220 respond and 29 refuse to respond. Assume that 1 of the 351 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who responds. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. P(22-29 or responds) = %3D (Hint: It might be helpful to organize the data into a table first.) Submit Question 17,194 7. NOV tv 17 MacBook Air