# Twenty

Twenty swallows sit on a 10 m long telephone cable. Assume that swallows are completely randomly distributed along the line.

(a) What is the probability that more than three swallows sit on a randomly selected section of cable 1 m long?

(b) What is the probability that the spacing between two swallows will be greater than 1 m and, at the same time, less than 2 m?

(a) What is the probability that more than three swallows sit on a randomly selected section of cable 1 m long?

(b) What is the probability that the spacing between two swallows will be greater than 1 m and, at the same time, less than 2 m?

## Correct answer:

Tips for related online calculators

Looking for a statistical calculator?

Do you want to convert length units?

Tip: Our Density units converter will help you convert density units.

Would you like to compute the count of combinations?

Do you want to convert length units?

Tip: Our Density units converter will help you convert density units.

Would you like to compute the count of combinations?

### You need to know the following knowledge to solve this word math problem:

### Units of physical quantities:

### Grade of the word problem:

## Related math problems and questions:

- The average 7

The average lifespan for cricket is 90 days, with a standard deviation of 13 days. If we assume that the lifespan of cricket is normally distributed, a. What is the probability a randomly selected cricket has a lifespan of fewer than 75 days? b. What is t - At noon 4

At noon, the temperature was 9ºC. Between noon and 11:00 p.m., it rose by 8ºC, fell by 4ºC, rose by 3ºC, and then fell by 8ºC. What was the temperature at 11:00 p.m.? - Laboratory

Mang Elio went to his laboratory at 7:00 a.m. and recorded the temperature as 11.07°C. At lunchtime, the temperature rose by 27.9°C but dropped by 8.05°C at 5:00 p.m. What was the temperature at 5:00 p.m.? - Bulb life

Tests show that the lives of light bulbs are normally distributed with a mean of 750 hours and a standard deviation of 75 hours. Find the probability that a randomly selected light bulb will last between 675 and 900 hours.

- Q10 - investigate

A nutritionist who investigates fruits reported that the average weight of a raspberry is 4.4 g with a standard deviation of 1.28 g. What is the probability that a randomly selected raspberry would weigh less than 3.1 grams? Let X represent the weight of - Distribution 82042

Assume that the IQ in the population follows a normal distribution with a mean of 100 points and a standard deviation of 10 points. With what probability among 15 randomly selected people: a. Is there anyone with an IQ above 130 points? b. Are there at le - Lifespan

The lifetime of a light bulb is a random variable with a normal distribution of x = 300 hours, σ = 35 hours. a) What is the probability that a randomly selected light bulb will have a lifespan of more than 320 hours? b) To what value of L hours can the la