One light bulb is selected at random from a lot of 140 light bulbs, of which 5% are defective. What is the probability that the light bulb selected is defective?
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One light bulb is selected at random from a lot of 140 light bulbs, of which 5% are defective. What is the probability that the light bulb selected is defective?
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- A university study involves a simple random sample of 26 students taken from a population of 12,550. Undergraduate students make up 73% of the university's students. Determine the probability of selecting only undergraduate students?Of the cartons produced by a company, 7% have a puncture, 10% have a smashed corner, and 1.1% have both a puncture and a smashed corner. Find the probability that a randomly selected carton has a puncture or a smashed corner.Migraine medication was administered to patients in that 12% experienced weight gain as a side effect. If a random sample of 15 patients were chosen what is the probability that exactly 4 experienced weight gain as a side effect?
- in a certain county in Michigan, the rate of vaccinated school-aged children is 86%. If 30 children are to be randomly chosen from this county then what is the probability that 25 of them will be vaccinated?If a seed is planted, it has an 80% chance of growing into a healthy plant. If 12 seeds are planted, what is the probability that exactly 1 doesn’t grow?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…
- According to a study, 20% of corporate officers are women. Suppose that you select a random sample of 250 corporate officers. What is the probability that in the sample, between 13% and 17% of the corporate officers will be women?A survey showed that 76% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 14 adults are randomly selected, find the probability that at least 13 of them need correction for their eyesight. Is 13 a significantly high number of adults requiring eyesight correction?If a seed is planted, it has a 65% chance of growing into a healthy plant. If 10 seeds are planted, what is the probability that exactly 1 doesn't grow?
- In a recent poll of voters, 20% were displeased with both candidates. If 3 people were picked at random. find the probability that at least one liked one of the candidates.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?A random sample of 450 adults is taken from a population of 15000. It is believed that 82% of the population owns a cell phone.What is the probability that from the sample, less than 80.5% of them own a cell phone? What is the probability that from the sample, between 81% and 82.5% of them own a cell phone?
