If 25 percent of students at a particular school use mechanical pencils, what is the probability of randomly selecting 200 students from said schook, and finding at most 19% of them use mechanical pencils?

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, 203 answered "none," 294 said "one," 364 said "two," 143 said "three," and 139 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. P(four or more cell phones) = %3D (Round to three decimal places as needed.) Is it unlikely for a household to have four or more cell phones in use? A. Yes, because the probability of a respondent with four or more cell phones in use is less than or equal to 0.05. B. Yes, because the probability of a respondent with four or more cell phones in use is greater than 0.05. C. No, because the probability of a respondent…

In a 5/39 lottery, what's the probability of winning second place?

Suppose the percentage of those completing a master’s degree is 42%. In a randomsample of 9 master’s degree students, what is the probability that exactly 5 willcomplete their degrees?

In a secondary school, 58% of students who is studying in an art course have purchased a drawing board. If 12 students are randomly selected, what is the probability that exactly 7 of them have purchased a drawing board?

. If tossing a loaded coin gives heads 60% of times, what is the likelihood (probability) of observing heads 50 times or fewer out of 100 tosses? 12 The probability of observing heads 50 times or fewer out of 100 would be 0.03 or 3 percent. use excel.

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

The probability that an individual is left-handed is 12%. In a randomly selectedclass of 30 students, what is the probability of finding exactly 4 left-handedstudents?

State the predicted probability of being a 53 year old menopausal woman whose hemoglobin level is 15?

A sample of 4 different calculators is randomly selected from a group containing 20 that are defective and 10 that have no defects. What is the probability that all four of the calculators selected are defective? Give your answer as a percent rounded to the nearest tenth of a percent.