Phenylketonuria is inborn disease with the prevalence 0.4 per 1000 newborns. The parameters of phenylketonuria test are Sensitivity: 1.000 Specifity: 0.999 Patient has positive test result. What is the probability, that pacient is diseased? What is the probability, that he has no disease?
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- what is the answer? 0.6217 is wrong.Weights of carry-on luggage on international flights are normally distributed with mean 14.4 Ibs. and standard deviation 3.6 lbs. The probability that a random sample of 36 carry-on bags will have a MEAN weight less than 15 lbs. is about Note: Enter your answer accurate to TWO (2) decimal places.Measuring blood pressure with a normal distribution. With a mean of 140 and a standard dev. of 15, what is the probability of getting a blood pressure higher than 160?
- The probability of an event is 0.0825. For which standard significance level would this event be statistically significant? (Choose only one.) Select one: a. 0.05 b. 0.10 c. 0.01A company sells fertilizer in batches of 5 cubic feet. The probability distribution of X, the number of cubic feet sold in a single order for concrete from this company, is shown in the table below. X= the number of cubic yards Probability 10 15 20 25 30 0.15 0.25 0.25 0.30 0.05 Calculate and interpret the expected value. The expected value is 20. This represent the average number of cubic feet sold in a single order over the long run by the company. The expected value is 19.25. This represent the average number of cubic feet sold in a single order over the long run by the company. The expected value is 20. This represent the average amount of fertilizer sold by the company. The expected value is 19.25. This represent the average amount of fertilizer sold by the company. The expected value is 19. This represent the average number of cubic feet sold in a single order over the long run by the company.Say you’re a chemical engineer studying whether a certain trace impurity is present in aproduct. An experiment has a probability of 0.80 of detecting the impurity if it is present. Theprobability of not detecting the impurity if it is absent is 0.90. You have reason to believe that40% of products actually contain the impurity. You perform an experiment which detected animpurity – what is the probability that the impurity is not really there?
- What is the probability that a registered voter voted in the election? The probability that a registered voter voted in the election is approximately. (Round to three decimal places as needed.) About 3,034,053 voted in the election About 3,529,477 of the registered voters did not voteBlueSky Air has the best on-time arrival rate with 75% of its flights arriving on time. A test is conducted by randomly selecting 15 BlueSky Air flights and observing whether they arrive on time. What is the probability that two flights of BlueSky Air arrive late? (Please carry answers to at least six decimal places in intermediate steps. Give your final answer to the nearest three decimal places). Probability (as a proportion)You are playing a card came, and the probability that you will win a game is p = 0.35. If you play the game 1319 times, what is the most likely number of wins? (Round answer to one decimal place.) μ = Let X represent the number of games (out of 1319) that you win. Find the standard deviation for the probability distribution of X. (Round answer to two decimal places.) O= The range rule of thumb specifies that the minimum usual value for a random variable is µ-20 and the maximum usual value is µ+2o. You already found μ and o for the random variable X. Use the range rule of thumb to find the usual range of X values. Enter answer as an interval using square- brackets and only whole numbers. usual values=
- The probability distribution of the random variable X represents the number of hits a baseball player obtained in a game for the 2012 baseball season. 1 2 3 4 P(x) 0.1668 0.3412 0.2912 0.1495 0.0384 0.0129 The probability distribution was used along with statistical software to simulate 25 repetitions of the experiment (25 games). The number of hits was recorded. Approximate the mean and standard deviation of the random variable X based on the simulation. The simulation was repeated by performing 50 repetitions of the experiment. Approximate the mean and standard deviation of the random variable. Compare your results to the theoretical mean and standard deviation. What property is being illustrated? E Click the icon to view the data tables. Compute the theoretical mean of the random variable X for the given probability distribution. Hx = hits (Round to three decimal places as needed.)BlueSky Air has the best on-time arrival rate with 77% of its flights arriving on time. A test is conducted by randomly selecting 18 BlueSky Air flights and observing whether they arrive on time. What is the probability that two flights of BlueSky Air arrive late? (Please carry answers to at least six decimal places in intermediate steps. Give your final answer to the nearest three decimal places). Probability (as a proportion)You want to find the probability that people will return a shopping cart to the corral after loading the groceries in their vehicle. For a 4 hours period, you observe the number of people who returned their cart and the number who did not. A success in this case would be that the person returned their cart. Choose the best statistical tool to calculate this probability A. Use the Central Limit Theorem to find the probability that the sample mean exceeds a certain value B. Use the empirical rule to find the number of cars that bracket 68% of the data C. Calculate a confidence interval for the population mean D. Calculate the total number of successes divided by the total number of observations to find the observed probability
