For a particular diamond mine, 82% of the diamonds fail to qualify as gemstone grade. A random sample of 102 diamonds is analyzed. Find the probability that less than 88% of the sample diamonds fail to qualify as gemstone grade.

A study indicates that 70% of teenagers have have a tattoo. You randomly sample 9 teenagers. Find the probability that between 6 and 8 (including endpoints) have a tattoo. Enter your answer rounded to 4 decimal places.

Consider the case where the predetermined average number of bus arrivals at the Cubao Station is 6 per 15-minute period. Find the probability of at least 4 buses arriving in a 15-minute period.

The CDC found that 20 % of high school student vape . If 12 high school students are randomly selected what is the probability that two or more vape . Round anwser to the nearest thousandth

96 percent of adults own a smart phone around the world. In a random sample of 250 adults, what is the probability that 94% or more will own a smart phone?

If you select a random sample of 144 smartphone​ owners, what is the probability that the sample mean is between 22.5 and 23.5​?

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?

The quality of computer disks is measured by the number of missing pulses. For a certain brand of disks, 80% are generally found to contain no missing pulses. If 100 such disks are inspected, find the probability that 15 or fewer contain missing pulses. Paragraph BI

Out of a sample of 10,000 men, the probability that a man picked at random weighs over 190 pounds is    0.25. The probability that a man weighs less than 135 pounds is 0.15. What is the probability that a man picked at random weighs either 190 pounds or under 135 pounds?

The probability of passing the bar exam in a certain state is 2/3. If 10 people passed the test at a college in that state, then find the most likely value for the number of people who failed the test at that college.