Saturday

January 31, 2015

January 31, 2015

Posted by **David** on Tuesday, December 5, 2006 at 1:14am.

=

.50 for coin toss

.17 for die

Poll confidence level. Common for public opinion polls to have confidence level of 95%.If 5 different organizations conduct polls, what's the probability all five are accurate with margin of error.

In the 105th Congress, senate consists of 55 Republicans and 45 Democrates. If committee formed, randomlly selected 4 different senators, what's the probability of selecting all Republicans?

Southwest Airlines best rate with 80% arriving on time. A test was conducted selecting 15 Southwest flight and observing if arrive on time.

a. Find probability that exactly 10 flights arrive on time.

b. Find probabiltity that at least 10 flights arrive on time.

c. Find probability that at least 10 flights arrive late.

d. Would it be unusual for Southwest to have 5 flights late. Why or why not?

see my post to Mary above.

01

**Answer this Question**

**Related Questions**

math - A coin is tossed and then a die is rolled. Find the probability of ...

math - a fair coin is tossed in the air 4 times. if the coin lands heads up the ...

math (statistics) - an experiment consistbnof tossing a die and then flipping a ...

Statistics and Probability - One six-sided fair die is rolled, and one two-sided...

algebra I - If you toss a coin, the probability of gettig heads is 1/2. If you ...

math - In a game, a player tosses a coin 4 times. If the player gets 3 or 4 ...

Stat. - A trick coin has been weighted so that heads occurs with a probability ...

prob and stats - A coin is weighted so that the probability of obtaining a head ...

algebra - A coin is tossed 3 times. Find the probability of obtaining the ...

Finite Math - A coin is loaded, so that the probability of a head occuring on a ...