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The Mathematics part of SAT scores of students at UTC are normally distributed with mean of 500 and a standard deviation of 75.
a. If 2.28 percent of students who had highest scores received scholarships, determine the minimum score among those who received scholarships?
b. It is known that 6.3 percent of students who applied to UTC were not accepted. Determine the highest score of those who were denied acceptance?
c. What percentage of students had scores between 575 and 650?
A company has developed the new battery, but the average lifetime is unknown. In order to estimate the average, a sample of 150 batteries is tested and an average lifetime of this sample is found to be 250 hours.
In the Willow Brook National Bank waiting line system (see Problem 1), assume that the service times for the drive-up teller follow an exponential probability distribution with a service rate of 36 customers per hour or 0.6 customer per minute.
Carry out suitable multiple comparison procedure to determine the source of the difference.
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
A researcher discovers the number of parking tickets that a group of students have received during their driving careers. Twenty students reply and they have received between 9 and 20 parking tickets.
Let's further suppose that there was good interrater reliability on these frequency counts of behaviours and that they are interval/ratio level of measure, normally distributed, and independent observations.
Iindicate all samples are approximately Normal with no outliers. Is the ANOVA appropriate?
Each party's position must be statistically sound. Include as suitable graphs, computations, and statistical tests.
Determine the following: the three different types of shows you want to compare; the mood you will measure and how you will measure it; what you think will happen-how you think each group will score on the mood measure you use.
When we move from the basic normal distribution to the sampling distribution of the mean we substitute the standard error of the mean for the standard deviation when we make the conversion to the standardized normal distribution.
Three scholarships are available for students. Their values are: $2,000, $2,400, $3,000. Twelve students have applied and no student may receive more than one scholarship. Assume all twelve students are in needs of the funds, how many different..
Last school year, student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classificati..
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