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In a recent study on gender differences in education, a sample of 7 boys had a mean score of 18.8 and a standard deviation of 4.1 on a Standardized Math Test. A sample of 11 girls had a mean score of 19.7 and a standard deviation of 3.6 on the same test. What is the t-statistic for this data?
Create a histogram for the following data of the number of miles from residence to place of employment for 30 randomly selected residents of Middletown County.
a box contains four tickets labeled 0136. the chance that the sample sum of the labels on the tickets in three
How many treatments are there? What is the total sample size? Is there a significant difference at the 5% Level of significance? Would I accept or reject the null Hypothesis.
a businessman has two independent investments a and b available to him but he lacks the capital to undertake both of
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the P-value of the test statistic?
What is the probability that you get a seat that would fail the stress test if failing is a score of 6.2 or less and estimate of those population parameters
Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees and a standard deviation of 1 degrees C.
question a bottle cap manufacture with four machines and three operators wants to see if variation in hourly
q1. through years of careful observation you have begun to suspect that how vocal cats are is somehow related to the
Find the probability that at least one subject experiences headaches. Is it unusual to have at least one of six subjects experience headaches?
Exponential probability density function
a 28yr old man pays 165.00 for a one year life insurance policy with coverage of 140000.00. if the probability that he
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