If a seed is planted, it has a 80% chance of growing into a healthy plant. If 8 seeds are planted, what is the probability that exactly 4 seeds don't grow into healthy plants? Round your answer to 3 decimal places.

The probability that a salmon swims successfully through a dam is 0.85. Find the probability that two salmon swim successfully through the dam. Round to four decimal places.

In a large school, it was found that 71% of students are taking a math class, 72% of student are taking an English class, and 93% of students are taking both. Find the probability that a randomly selected student is taking a math class or an English class. Write your answer as a decimal, and round to 2 decimal places if necessary. Find the probability that a randomly selected student is taking neither a math class nor an English class. Write your answer as a decimal, and round to 2 decimal places if necessary.

Orson performs 7 exercises over the span of a week. 5 of his exercises involve skipping rope. If he randomly chose 4 exercises to do on Monday, what is the probability that all of them involve skipping rope? Write your answer as a decimal rounded to four decimal places.

The probability of drawing a peppermint candy out of a jar of 25 candies is 1/5.How many more peppermint candies should be added to the jar in order to increase the probability of drawing a peppermint candy to 1/3?

A math test has 10 multiple choice questions each with 3 answers what's the probability to get a grade of a 70 or higher

My brothers trick coin lands on tails 37% of the time. If I flip it 55 times what is the probability that I will get exactly 13 tails. Round to 4 decimal places.

A recent survey showed that 17% of community college students experienced at least some homelessness during their first year at a community college. Surveys also show that 80% of community college students need to take English their first year at a CC. Based on these surveys what is the probability of first year CC students experiencing at least some homeless during their first year and taking an English class? Show the formula, the math plug-ins, and answer.

35% of all college students major in STEM (Science, Technology, Engineering, and Math). If 32 college students are randomly selected, find the probability that exactly 11 of them major in STEM. Round to 4 decimal places.

A basketball player hits three-point shots 45% of the time.  If she takes 4 shots during the game, what is the probability that she misses the first shot and hits the last three shots?