1.Write out and draw the marginal probability distribution of X. Show your work. 2. Find the mean and variance of X? Show your work. 3.Write out and draw the conditional probability distribution of X, given that Y = 2. Show your work.
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1.Write out and draw the marginal
2. Find the
3.Write out and draw the conditional probability distribution of X, given that Y = 2.
Show your work.
| Y=1 | Y=2 | Total | |
| X=1 | 0.20 | 0.10 | 0.30 |
| X=2 | 0.40 | 0.30 | 0.70 |
| Total | 0.60 | 0.40 | 1 |
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- The probability distribution below is for the random variable X = the number of credits taken during the fall semester by a randomly selected student at a large university. Calculate the mean of X. Round to the hundredths place. Credits 14 15 16 17 Probabiblity 0.05 0.65 0.20 0.10Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities. A survey of adults found that 6% say their favorite sport is auto racing. You randomly select 600 adults and ask them to name their favorite sport. Complete parts (a) through (d).Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities. A survey of adults found that 6% say their favorite sport is auto racing. You randomly select 600 adults and ask them to name their favorite sport. Complete parts (a) through (d). ..... Determine whether a normal distribution can be used to approximate the binomial distribution. Choose the correct answer below. O A. No, because nq <5. B. No, because np <5. OC. Yes, because both np 25 and nq 2 5. Click to select your answer and then click Check Answer. Clear All Final Check Get More Help - HIST Sor
- Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities. A survey of adults found that 7% say their favorite sport is auto racing. You randomly select 400 adults and ask them to name their favorite sport. Complete parts (a) through (d).Two (not necessarily fair) four-sided dice are thrown, and the results added. The chart gives the probability of each outcome. X 2 3 4 5 6 7 8 P(X) .0625 .125 .1875 .25 .1875 .125 .0625 Find the mean and standard deviation for the probability distribution.Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities. A survey of adults found that 8% say their favorite sport is auto racing. You randomly select 600 adults and ask them to name their favorite sport. Complete parts (a) through (d). Determine whether a normal distribution can be used to approximate the binomial distribution. Choose the correct answer below. O A. No, because ng < 5. O B. Yes, because both np25 and ng 25. O C. No, because np <5. (a) Find the probability that the number of people who say auto racing is their favorite sport is at most 56. |(Round to four decimal places as needed.)
- Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities. A survey of adults found that 7% say their favorite sport is auto racing. You randomly select 400 adults and ask them to name their favorite sport. Complete parts(a) through (d).5. (Solve using pen and paper) Cans of salmon are supposed to have a net weight of 6 oz. The canner says that the net weight is a random variable with mean m=6.05 oz. and stand. dev. s=.18 oz. Suppose you take a random sample of 36 cans and calculate the sample mean weight to be 5.97 oz. a. Find the probability that the mean weight of the sample is less than or equal to 5.97 oz.Pavn
- Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities. A survey of adults found that 8% say their favorite sport is auto racing. You randomly select 400 adults and ask them to name their favorite sport. Complete parts (a) through (d). .... . Determine whether a normal distribution can be used to approximate the binomial distribution. Choose the correct answer below. A. No, because np < 5. B. No, because nq < 5. C. Yes, because both np 25 and nq 2 5. (a) Find the probability that the number of people who say auto racing is their favorite sport is at most 39. (Round to four decimal places as needed.)show complete solution, thank you.A bag contains 10 cards, of which 2 are marked two, 1 is marked three, 4 are marked four and 3 are marked five. Construct a probability distribution table, showing X, the number on the card. The tables has been constructed. It is attached. Can you help with part ii. Use your table to find the variance of this probability distribution. ?
