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23% of college students say they use credit card because of the rewards program . You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that number of college students who say they use credit cards because of there wards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. If convenient, use technology to find the probabilitie.
The number of hurricanes that are formed during each hurricane season can be modeled using the Poisson probability distribution.
A psychology professor is interested in whether implementing weekly quizzes improves student learning. She decides to use the weekly quizzes in one section of her introductory psychology class and not to use them in another section of the same cou..
Ten people agree to take part in an experiment designed to determine whether a persons weight differs between morning & evening.
Calculate the t-test statistic by hand. I don't understand steps to solve this problem. If you could provide me with a step by step narrative it would be appreciated.
A new teaching tool developed by the Allied Health department is claimed to help 68% of students learn at a faster pace. State the null and alternate hypothesis if:
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of four students was taken in order to estimate the mean study time for the population of all students.
To find out the probability that the age of a randomly selected CEO. The average age of CEOs is 56 years. Suppose the variable is normally distributed.
Find the probability that not enough seats will be available. Is this probability low enough so that overbooking is not a real concern?
To estimate the true proportion of students who abstain from alcohol at LBCC, you will need to take a simple random sample.
Identify the independent and dependent variables. Perform a regression analysis on the data.
A researcher is looking at the relationship between home-schooling and achievement. She is hypothesizing that the home-schooled children will score higher than non home-schooled children on a standardized achievement test.
A well-established power-drink dispensing machine is programmed to dispense an average of 2.02 liters into a container labled"2 liters". Actual quantities are known to be normally distributed with a standard deviation of 0.015 liters. What is the ..
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