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A group of 12 hemophiliacs, all under 41 years of age at the time of HIV seroconversion, were followed from primary AIDS diagnosis until death (ideally, we should take as a starting point the time at which a person contracts AIDS rather than the time at which the patient is diagnosed, but this information is not available). Survival times (in months) from diagnosis until death of these hemophiliacs were: 2, 3, 6, 6, 7, 10, 15, 15, 16, 27, 30, and 32. Calculate and graph the Kaplan- Meier curve.
1. Calculate the mean, median, and standard deviation for ounces in the bottles. 2. Construct a 95% Confidence Interval for the ounces in the bottles.
Sales manager wishes to award sales representatives who earn the largest commissions a bonus of= $1,000 .He can award bonus to 20% of representatives. Determine cutoff point between those who earn bonus and those who don't?
In order to compare the mean charges for the three groups, the data will be subjected to an analysis of variance. Write the null hypothesis tested by the ANOVA.
this problem set introduces you to the use of spss for analyzing data with one iv and more than one dv to investigate
john carpenter runs a timber company. john is considering an expansion to his product line by manufacturing a new
The instructor plans to draw a histogram of the 1,100 sample proportions. What will be the approximate mean for the 1,100 sample proportions?
find the indicated probabilities using the geometric distribution or the poisson distribution. then determine if the
a bank classifies borrowers as high risk or low risk and 15 of ots loans are made to those in the high risk category.
The Manager of a seafood restaurant was asked to establish a pricing policy on lobster dinners. Experimenting with prices produced the following data:
a water treatment plant needs to maintain the ph of the water in the reservoir at a certain level. to monitor this they
For each of the following research questions does the situation or research question involve independent samples or paired data
What is the relative frequency of classical CDs with a playing time of X less than 49 minutes? That is, find the relative frequency of the event X
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