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What does it mean for a hypothesis test to be statistically significant? How is this different from our everyday notions of "significant"?
Statistics and Probability, Statistics
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In an effort to check the quality of their cell? phones, a manufacturing manager decides to take a random sample of 10 cell phones from? yesterday's production? run, which produced cell phones with serial numbers ranging ...
What is the probability of a value from a normal distribution being between 0.75 standard deviations above the mean and 1.75 standard deviations below the mean? (Round calculations to nearest thousandth (3 digits))
Consider a hypothesis testing problem where the null and the alternative hypotheses are defined as H0 μ=5 Vs. H1 :μ≠5 H0:μ=5 Vs. H1:μ≠5 A 95% confidence interval for μ was calculated as (2, 7). A) What would be your conc ...
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In this question are you just using the empirical rule? You know that your population is normally distributed with a mean of 100 and a standard deviation of 15. Using the empirical rule as a rough approximation, what is ...
Suppose you want to estimate the proportion of traditional college on your campus who own their own car. Based on some research on other campuses, you believe the proportion will be near 25%. What sample size is needed i ...
Assume that the critic finds that 50 percent of the movies have positive comments about the plot, 50 percent have positive comments about the acting, and 30 percent were not given positive comments about either plot or a ...
A research a research institute conduct the clinical trials of a method designed to increase the probability of conceiving a boy. Amount 170 to babies born to parents using the method. 146 for boys. Identify the margin o ...
A process is normally distributed with a mean of 104 rotations per minute and a standard deviation of 8.2 rotations per minute. If a randomly selected minute has 118 rotations per minute, would the process be considered ...
A bond that makes payments in a certain currency contains the risk of holding that currency and so is priced according to the yields of similar bonds in that currency.
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