find (a) P(X ≤ 2,Y = 1); (b) P(X > 2,Y ≤ 1); (c) P(X > Y);
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- Normal Probability Assume the length of songs on the radio are normally distributed with a mean of 212 seconds and a standard deviation of 19 seconds. a) What percentage of songs on the radio are 200 seconds or shorter? b) What percentage of songs are at least 230 seconds long? c) If a song on the radio is selected randomly what is the probability thay it last between 188 and 208 seconds? d)A radio station wants to identify all songs thay are on the lowest 5% by length. how long would a song need to last to fall in this group? (round your answer to nearest whole number)Binomial Random Variable atof According to the CDC, in 2015 20% of high school students rode with a driver (in the last 30 days) who had been drinking alcohol. A random sample 16 high school students was chosen. Assume the distribution is normal. Use the Binomial Distribution Table (PDF, 739 KB) (opens in new window) to find the probabilities. Please note, this question is specifically assessing your ability to use the table to find the probability. You may get a slightly different answer due to rounding if you use a calculator or other technology. 1. At least 15 have ridden with a drunk driver. P(r2 15)~ 0 2. Less than 4 have ridden with a drunk driver P(r < 4) 0.5981 3. No more than 2 have ridden with a drunk driver. P(r < 2)=010 4. Exactly 11 have ridden with a drunk driver. P(r 2)= = • 11)= 5. At least 1 have ridden with a drunk driver. P(r 1) 6. Between 2 and 4 (exclusive) have ridden with a drunk driver. P(2 < + 4) Please answer all parts of the question. Previous page Next page…P Do Homework - Unit 3 Homework b Success 22SP_MATH_ 1016_ONF01 E Homework: Unit 3 Homework Complete parts (a) and (b) below. The number of dogs per household in a small town 1. 0.212 4. 0.014 5. 0.007 Dogs Probability 0.086 0.021 099 0 (a) Find the mean, variance, and standard deviation of the probability distribution. Find the mean of the probability distribution. (Round to one decimal place as needed.) Help me solve this View an example Get more help-
- Binomial Probability Distribution. Gasoline combust and the heat it produces is used as energy source for a car to run. Supposed that only 80.32% of the gasoline combusts among the cars, (a) determine the probability of 3 out of 8 cars selected at random will combust more than 80.32%. (b) calculate the mean. (c) calculate the standard deviation.Random variable X has the binomial distribution with n=100 and p=0.25. By using binomial probability table, find a)p(x<20) b)p(x<=15) c)p(20<x<30)Differentiate between hypergeometric and binomial probability distribution with assumptions.
