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The grade point average of the students at UTC is 2.80 with a standard deviation of 0.84. The grade point average of students at UTK is 2.4 with a standard deviation of 0.84. Which university shows a more dispersed grade distribution?
Suppose that about 48% of all infants are girls. The maternity ward at a large hospital handles 1000 deliveries per year. A smaller hospital in the same city records about 50 deliveries per year. At which hospital is it more likely that between 46..
You take a random sample and perform a hypothesis test, getting a p-value of 0.2578. What is the appropriate conclusion? Conclude at the 5% level of significance.
What is the probability of getting a number less than 5 on both?
Test whether the average cycle of sleeping and waking differs significantly from 24 hours.
An instructor claims the average time to take a statistics test is greater than 39 min. As, if a sample of 33 students took 43 min. is the instructor's claim true?
She asks 10 people how many Standard Deviations songs they know. Her data are:
Scores on an endurance test for cardiac patients are normally distributed with mean = 182 and standard deviation = 24.
Verify that this is valid density function. Find out probability that weight is smaller than 24 ounces.
Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..
Professor Cox needs a volunteer amongst 30 students in his statistical applications course. The average age of his students is 25 years, with the standard deviation of 3 years.
Based on past data, the Student Recreation Center knew that the proportion of students who prefer exercising outside over exercising in a gym was 0.734. To update their records, the SRC conducted a survey. Out of 95 students surveyed, 76 indicated..
Calculate a 3-period moving average for period 7. Compute the MAD of the forecast.
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