suppose we select an SRS of 1010 adults. If it is believed that 60% of all adults are very satisfied with their lives, what is the probability that at least 610 adults in our sample are very satisfied with their lives?Let X be the number (out of 1010) of adults who are very satisfied with their lives. What distribution should X have? Why?

13 percent of the patients in a study reported previous episodes of a stroke. Use 13 percent as the estimate of the prevalence of stroke within the population. If 70 subjects are chosen at random from the population, what is the probability that 10 percent of less would report an incidence of stroke?

In a bag of marbles, the following represents the distributions: 11 Red, 13 Green, 10 Blue, and 11 Yellow. What is the probability of randomly selecting 3 consecutive marbles and they are all Red? After removing each marble, you replace them.

1. Two out of five adult smokers acquired the habit by age 14. If 400 smokers are randomly selected, find the probability that 170 or more acquired the habit by age 14.   2. The IQ of 300 students in a certain school in Quezon Province is approximately normally distributed with ? = 100 and ? = 15. How many students have an IQ from 85 to 120?

It has been determined that there is a 75% chance of a person using their seatbelt when sitting in the back seat of a car. If 8 people leave a party and take cabs home, which of the following would be used to find the probability that 6 of them use their seatbelt when sitting in the back seat?

We believe that 95% of the population of all Elementary Statistics students consider Statistics an exciting subject.  Suppose we randomly and independently selected 20 students from the population.  If the true percentage is really 95% find the probability of observing 19 or more of the students who consider statistics to be an exciting subject in our sample of 20.

The probability that an individual has 20-20 vision is 0.14. In a class of 77 students, what is the probability of finding exactly 5 people with 20-20 vision? assuming finding an individual with a 20-20 vision is independent of finding another individual with 20-20 vision.

Suppose that during this time of virus, 56% of people outside are wearing face masks. If you walk up to three random people, what is the probability that none of the three people will be wearing masks? Group of answer choices 32.5% 8.5% 41.4% 17.6%

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

Suppose that 40% of Tulane undergraduates intend to continue on to graduate school after completing their undergraduate degrees. Suppose we randomly select 20 Tulane undergraduates. Find the probability that at least 11 of the students in the sample intend to continue on to graduate school.