Reference no: EM132853541
-There are 7 yellow marbles, 8 red marbles, and 13 blue marbles in a bag. If you reach into the bag and pull out two random marbles, without replacement, what is the probability that you will get two blue marbles?
-Suppose the critical value for a left-tailed hypothesis test is -2.56 and the test statistic is -2.21, what is the appropriate conclusion
-The head nurse is trying to assign work positions for her nursing staff. If she has 12 nurses to choose from and she must assign a different nurse to each of 5 different rooms, how many ways can she place the nurses into the rooms?
-There are 7 yellow marbles, 8 red marbles, and 13 blue marbles in a bag. If you reach into the bag and pull out one marble, what is the probability that you will either get a yellow or blue marble?
-A survey found that 82% of students study for at least 3 hours before they take their final exam. If 5 students are randomly selected. What is the probability that exactly four of the students studies for at least 3 hours before taking their final?
-Suppose the p-value for a hypothesis test is 0.0023. Using ? = 0.05, what is the appropriate conclusion?
-Indicate which level of measurement is being used in the given scenario: A local newspaper lists the top five companies to work for in their city.
-An expensive restaurant claims that the average wait time for dinner is approximately 60 minutes. We suspect that this claim is inflated to make the restaurant appear more exclusive and successful. A random sample of 40 customers yielded a sample average waiting time of 50 minutes with a standard deviation of 10 minutes. Calculate the test statistic.
-There are 7 yellow marbles, 8 red marbles, and 13 blue marbles in a bag. If you reach into the bag and pull out a random marble, what is the probability that it will not be blue?
-In a class, the teacher decides to assign groups of 3 individuals to work on a project. How many ways is this possible if there are 36 students in the class?
-The weights of bags of chips for a vending machine are normally distributed with a mean of 1.5 ounces and a standard deviation of 0.2 ounces. What is the z-score of a bag of chips which weighs 0.85 ounces?
-The weights of bags of chips for a vending machine are normally distributed with a mean of 1.5 ounces and a standard deviation of 0.2 ounces. What is the probability that a randomly selected bag of chips is greater than 1.8 ounces?