To the right are the probabilities and values associated with five outcomes of an experiment. Calculate the expected value for the experiment. The expected value for this experiment is (Round to the nearest tenth as needed.)
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- A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 311 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated 66 31 97 Not Vaccinated 69 145 214 Total 135 176 311 Copy Data Step 3 of 8: Find the expected value for the number of subjects who are vaccinated and are not diseased. Round your answer to one decimal place. E Tables E Keypad Answer How to enter your answer Keyboard Shortcuts Previous Step Answers Evaccinated and not diseasedThe probability of success is 0.725. You take a sample of 760. for a sample of size 760, what is the typical deviation from the expected number of successes?Assume that you have a binomial experiment with p=0.4 and a sample size of 300. Find the expected value of this distribution. 48 60 120 300
- Pele took all samples of size n=40 from a population of test scores. He found that on average, the sample means he obtained were 6.2 points away from the mean of the sample mean which was 80. What are the standard error and the expected value of Pele’s dataset?Solve this for me.Consider a game of rolling a single die, with the outcome as the random variable X. A player gains $10 if the outcome is {1, 2, 3} and a player loses $5 if the outcome is {4, 5, or 6}. It does not cost anything to play the game. 1. Calculate the mean of X. 2. In your words, what does the expected value tell us about this game?
- For the experiment described below, let x determine a random variable, and use knowledge of probability to prepare a probability distribution. Two names are drawn from a hat, signifying who should go pick up pizza. five of the names are on the swim team and six are not. The number of swimmers selected is counted.A random sample of n = 100 observations is selected from a population with u = 31 and o = 21. Approximate the probabilities shown below. a. P(x2 28) c. P(xs 28.2) b. P(22.1sxs26.8) d. P(x2 27.0) Click the icon to view the table of normal curve areas.Suppose that you randomly draw one card from a standard deck of 52 cards. After writing down which card was drawn, you replace the card, and draw another card. You repeat this process until you have drawn 16 cards in all. What is the probability of drawing at least 7 clubs? For the experiment above, let X denote the number of clubs that are drawn. For this random variable, find its expected value and standard deviation. E(X) = σ =
- In manufacturing integrated circuits, the yield of the manufacturing process is the percentage of good chips produced by the process. The probability that an integrated circuit manufactured by the Ace Electronics Company will be defective is p = 0.04. if a random sample of 18 circuits is selected for testing, answer the following questions. Step 2 of 2: What is the expected number of defective regrated circuits in the sample? Round your answer to two decimal places, if necessary. Answer Tables Keyboard ShortcutsSuppose a life insurance company sells a $160,000 1-year term life insurance policy to a 20-year-old female for $330. According to the National Vital Statistics Report, 58(21), the probability that th female survives the year is 0.999544. Compute and interpret the expected value of this policy to the insurance company. The expected value is $. (Round to the nearest cent as needed.). Which of the following interpretations of the expected value is correct? Select the correct choice below and fill in the answer box to complete your choice. (Round to the nearest cent as needed.) OA. The insurance company expects to make a profit of $ OB. The insurance company expects to make a maximum profit of $ OC. The insurance company expects to make a minimum profit of $ OD. The insurance company expects to make a profit of $ ! 1 Q @ 2 W 3 E $ 4 R on every 20-year-old female it insures for 1 year. on every 20-year-old female it insures for 1 year. on every 20-year-old female it insures for 1 month. on…Of all the students, 44% own an iPhone, with a standard deviation of .03 For that same sample of 400 students, what is the probability that at least 42% of them own an iPhone?