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As part of a large ongoing study on the treatment of women with breast cancer, the treatment time (in months) of eight patients who were cancer free is recorded. They are: 9.47 8.60 19.33 16.33 8.5 9.40 17.67 19.30 What are the degrees of freedom for testing that the mean disease-free time is greater than 0?
A sample from each population was selected at random and using the Kruskal-Wallis test, H was computed to be 2.11. What is your decision at the 0.05 level of risk?
question to play a lottery game a player must choose 6 numbers between 1 and 49. the order is not important. six
1. calculate the residual for the x y pair 44491 4807.2. did the regression equation underestimate or overestimate the
Suppose you are in a class of 120 students. What is the probability that at most 42 students will say that they frequently experience stress in their daily lives?
A quality control engineer wants to check if a particular product meets the specification of 90% of the entire product shipped is in perfect condition. He randomly selects a sample of 10 items of the product from a large lot ready to be shipped.
a random sample of size 36 is selected from a population whose mean is 70 and standard deviation is 6. calculate the
for a given sample size when we increase the probability of type 1 error the probability of a type 2 error?a. remains
A bar chart to illustrate the differences. What type of statistics was shown? What activities did the newspaper use to make the report?
During the gestation period of 28 weeks, what percent of the babies born within each gestation period have a low birth weight (under 5.5 lbs)?
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
A table showing the season in which the first 36 U.S. presidents died. Research question: At alpha=0.10, Can you reject the hypothesis that presidents' deaths are uniformly distributed by season?
suppose that you want to estimate the mean ph of rainfalls in an area that suffers from heavy pollution due to the
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