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The Genetics & IVF Institute developed its YSORT method to increase the probability of conceiving a boy. Among 152 women using that method, 127 had baby boys. Assuming that the method has no effect so that boys and girls are equally likely, find the probability of getting at least 127 boys among 152 babies. Does the result suggest that the YSORT method is effective? Why or why not?
She then selects a sample of 102 football players and finds that their average math SAT is 460. Use alpha =.01 to perform the appropriate hypothesis test.
Using the .02 level of significance, conduct a five-step hypothesis testing procedure to determine if the new processes significantly reduced the wait time.
Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.
Your office has just received 128 insurance claims to be processed in the next few days. What is the probability that half or more of the claims have been padded?
The standard deviation of the time to complete the entire homework assignment
Calculate and post your 'answers' or interpretations of (a little bit of a review of the fundamental concepts): The three Measures of Center (Mean, Median, and Mode).
Using P-values for hypothesis testing they are intuitively easy and dont require critical values in charts. In real world terms, what is the best way to describe how P-values work and how to explain this to someone?
Pick a random sample of 50 homes from the enclosed 90 cases. Double the asking price and selling price and use this data to develop three predictive models:
What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 5 of µ? Use the value 20 for the population standard deviation of scores on this subsection.
A computer system uses passwords constructed from the 26 letters (a to z) or 10 integers (0 to 9). Suppose there are 10000 users on the system with unique passwords. A hacker randomly selects (with replacement) passwords from the potential set.
Find the test statistic . Find the standardize test statistic. decide whether the standardize test statist is in the rejection region and decide whether you should reject or fail to reject the null. Sample are random and independent. Claim u1 =u2,..
For commercial banks in each state, the U.S. Federal Deposit Insurance Corporation has determined the percentage of domestic assets. Construct a frequency distribution with 6 classes for this data.
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