Question The graph below shows the graphs of several normal distributions, labeled A, B, and C, on the same axis. Determine which normal distribution has the largest standard deviation. Ans; c You can as well check out on (Solution) MATH225 Week 5 Assignment Central Limit Theorem for Means Question Gail averages 64 words per minute on a typing test with…
Question The number of miles a motorcycle, X, will travel on one gallon of gasoline is modeled by a normal distribution with mean 44 and standard deviation 5. If Mike starts a journey with one gallon of gasoline in the motorcycle, find the probability that, without refueling, he can travel more than 50 miles. Ans. 0.1151 You can as well check…
Question From recent census data, it is discovered that the proportion of the adults in the United States who are first generation Americans is 14%. For a random sample of size 500, what is standard deviation for the sampling distribution of the sample proportions, rounded to three decimal places? Provide your answer below: Ans. Given the population proportion p=14%=0.14 and…
Question A basketball player has a 0.689 probability of making a free throw. If the player shoots 18 free throws, what is the probability that she makes no more than 11 of them? Answer This probability can be found using the binomial distribution with success probability p=0.689 and 18 trials. To find the probability that no more than 11 of the free throws are made, use a…
Question Find the sample variance of the following set of data:11, 4, 4, 6, 10. Ans: 11 Question Using the following set of data (the same as in the previous problem), find the sample standard deviation:11, 4, 4, 6, 10. Ans_________ You can also check out (Solution) MATH225 Week 4 Assignment Contingency Tables Question Which of the following lists of data has the…
Question At a certain fast food restaurant, 77.5% of the customers order items from the value menu. If 14 customers are randomly selected, what is the probability that at least 9 customers ordered an item from the value menu? Use Excel to find the probability. Ans. 0.927 You can also check out (Solution) MATH225 Week 4 Assignment – Evaluating Probability with…
Question A spinner contains the numbers 1 through 40. What is the probability that the spinner will land on a number that is not a multiple of 6? Give your answer as a fraction. 17/20 Question A baker finds several new recipes to try. Of the new recipes, there are 11 for cookies, 10 for muffins, and 4 for cakes. If the baker selects a…
Question A survey was conducted to see whether age has an association with the belief that a master’s degree or higher provides an advantage in one’s career. Of the 524 adults between the ages of 22 and 25 surveyed, 56% believed that a master’s degree has value in a person’s career path. Of the 458 adults surveyed between the ages of 40 and 45, 52% also believed that a master’s…
Question Of the following pairs of events, which pair has independent events? Select the correct answer below: drawing a 2 and drawing a 4 with replacement from a standard deck of cards rolling a sum greater than 7 from two rolls of a standard die and rolling a 4 for the first throw rolling a 3 with a standard die and then rolling a sum…
Question Researchers wanted to study if having a long beak is related to flight in birds. They surveyed a total of 34 birds. The data are shown in the contingency table below. What is the odds ratio for birds having long beaks being able to fly against birds not having long beaks being able to fly? Round your…