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A test for AIDS is 99% successful, i.e. if you are HIV+ it will detect it in 99%of all tests and if you are not, it will again be right 99% of the time. Assumethat about 1% of the population are HIV+. You take part in a random testingprocedure, which gives a positive result. What is the probability that you areHIV+? What implications does your result have for AIDS testing?
Generate a 95% CI for the difference in proprotions of particpants reportinga reduction of symptoms between the experimental and placebo groups.
body mass index bmi for newborns follows a normal distribution with a mean of 14 and standard deviation of .95. a
Use the critical values for z of 1.65 and a p level of approximately 0.10, or 10%. For each of the following values, determine if you would reject or fail to reject the null hypothesis:
Make a histogram for the r probability distribution.
Using one proportion z test to find whether or not to support the claim - There is little evidence to reject H 0 , therefore they conclude the tvs are 20 pounds on average.
a teacher gives a third grade class of n 16 a reading skills test at the beginning of the school year. to evaluate the
a researcher believes that individuals in different occupations will show differences in their ability to be
Consider the multiple regression equation, = 100 + 20x1 - 3x2 + 120x3
Draw a tree diagram to show all possible outcomes of the experiment. Label the probability associated with each stage of the experiment on the appropriate branch.
Graph one shows a number of observations that are very spread out but generally trending from the top left of the graph to the bottom right.
Stock form a normal distribution with a mean of $8.52 with a standard deviation of 2.38. What percentage of the scores lie below $7.42?
If 20 customers were selected at random during one business day, what is the probability that at least 11 of them did not order a pastry with their drink. Round answer to 4 decimal places.
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