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Respond to the following questions.
a) One group of mothers has played classical music for their babies every day for 6 months while another group of mothers has not. The babies are tested to determine if there is a significant difference in the motor coordination skills of these two groups.
b) College freshmen with high test anxiety are assigned to three groups. One group receives free individualized counseling, one group participates in a class to teach them how to reduce their anxiety, and the third group receives no treatment. They are tested to determine if there is a significant difference in the test anxiety level of the three groups in a test situation.
c) A survey of local residents has been conducted to determine the level of support for a new shopping plaza. Those surveyed were allowed to respond in one of five categories: strongly support, support, no opinion, do not support, strongly do not support. The number of people in each category was recorded.
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
Provide a discussion that supports the assumption that the variance of savings increases with family income.
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study and gender differences were also to be investigated. One of the variables measured was the heart rate after..
Examined the effect of body position on blood pressure
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be:
If a complete failure occurs, calculate the probability that the fault occurred in:
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
If the standard deviation is $89.46, find the probability that a randomly selected customer spends between $550.67 and $836.94.
A bank wants to get new customers for their credit card. They try two different approaches in their marketing campaign. The first promises a "cash back" reward; the second promises low interest rates. A sample of 500 people are mailed the first br..
Regression equation to predict the dependent variable using multiple regression analysis:
At 0.05 level of significance, is there evidence of noteworthy difference in variation in sales among different aisle locations?
Solve this problem explicitly using all five steps of hypothesis testing, and illustrate your answer with a sketch showing the comparison distribution
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