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Question: An expert witness for a paternity lawsuit testifies that the length of a pregnancy is normally distributed with a mean of 280 days and a standard deviation of 13 days. An alleged father was out of the country from 240 to 306 days before the birth of the child, so the pregnancy would have been less than 240 days or more than 306 days long if he was the father. The birth was uncomplicated, and the child needed no medical intervention. What is the probability that he was NOT the father? What is the probability that he could be the father? Calculate the z-scores first, and then use those to calculate the probability.
Use Hypothesis testing to compute te correlation between these two variables and these it for significance. Test at .01 level of significance.
The Swiss banks had been asked to look a little harder after finding nothing at all the first time round.- If President Mobutu's money was distributed in all 406 banks, how much was found, on average, per bank?
Conduct a PsycINFO search to find information on the construct validity of a psychological measure.- Read about a measure that interests you and describe the reliability and validity research reported.
a) 95% of confidence intervals generated will include the sample mean X. b) 5% of the confidence intervals generated will include the true mean μ
when a pair of dice are thrown we are customarily interested in the total number of dots t. calculatea. its mean.b. its
a. Fill in blanks in the table. b. What percent of students take exactly two courses? c. What percent of students take one or two courses?
a sample of 9 quiz scores had a mean of 15.2 and a sample standard deviation of s 3.3. if it is known that the quiz
Similar survey of student population 10 years ago found that coffee shop was favoured by 20% of students, and pizza and hamburger were each preferred by 40% of the students. Determine the expected frequencies for chi-square test.
15% of the south district students failed, and 5% of the central district students failed. Develop a probability tree showing all marginal, conditional, and joint probabilities.
question as a student you probably have noticed a curious phenomenon. in every class there are some students who zip
For each data set, compute and save g(m hat). Then do the following: Plot the histogram of B values of g(m hat)and sqrt(n)*[g(m hat)- g(m )].
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence int..
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