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You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. You sample 30 night students, and the sample mean GPA is 2.35 with a standard deviation of 0.46. You sample 25 day students, and the sample mean GPA is 2.58 with a standard deviation of 0.47. Test the claim using a 5% level of significance. Assume the sample standard deviations are unequal and that GPAs are normally distributed.
Hypotheses:
H0: μ1 (?) μ2H1: μ1 (?) μ2
What are the correct hypotheses for this problem?
suppose there is sufficient evidence to reject ho u1u2u3 using a one-way anova. the mean square error from the anova is
In a? region, there is a 0.8 probability chance that a randomly selected person of the population has brown eyes. Assume 11 people are randomly selected.
question 1 the average teachers salary in arizona is 42300 with standard deviation 5000. assuming a normal distribution
A sample of 15 female collegiate golfers was selected and the clubhead velocity (km/hr) while swinging a driver was determined for each one, resulting in the following data ("Hip Rotational Velocities During the Full Golf Swing," J. of Sports Sci..
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At the 0.025 level, is age group independent of name-brand/generic specification? Based on the chi-square table, what is the most accurate statement that can be made about the p-value for the test?
Ann Landers, in her advice column of October 24, 1994 (San Luis Obispo Telegram-Tribune), described the reliability of DNA paternity testing as follows
A telephone survey of students at your university, to estimate the total amount of money students spend on textbooks.
while walking along a railroad track in a daydream you are suddenly aware of a loud noise right behind you. what would
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