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A UCLA researcher claims that the life span of mice can be extended by as much as 25% when the calories in their food are reduced by approximately 40% from the time they are weaned. The restricted diets are enriched to normal levels by vitamins and protein. Assuming that it is known from previous studies that a = 5.8 months, how many mice should be included in our sample if we wish to be 99% confident that the mean life span of the sample will be within 2 months of the population mean for all mice subjected to this reduced diet?
question the percentage of students in private school is about 11.in a sample of 450 students from different countries
Run an ANOVA using only groups 1 to 6 (You can hide group 7 from the analysis by data followed by select cases and then you filter out group 7 by if GROUP~= ). Also run the posthoc tests LSD and Bonferroni.
a bowl contains 8 red 2 green 5 yellow and 2 orange marbles. a sample of 3 marbles is chosen at random from the bowl.a.
the average life of a certain type of small motor is 10 years with a standard deviation of 2 years. the manufacturer
Individual scores of a placement examination are normally distributed with a mean of 84.2 and a standard deviation of 12.8.
assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the
Data are recorded on effects of each drug. Is research division by using dependent or independent samples? Explain why?
Age effects in medical care. The type of medical care a patient receives may vary with the age of the patient. A large study of women who had a breast lump investigated whether or not each woman received a mammogram and a biopsy when the lump was ..
the zombie apocalypse has begunand you are conducting tests to see whether or not members of the population have been
For the following independent random samples, use the z-test and the 0.01 level of significance in testing Ho:u1 = u2 versus H1:u1 = u2.
give and describe an example of an ordinal measurement
If and are the proportions of all college males and females correspondingly, who worked last summer, the z statistic (±0.01) for a test comparing the proportions of college men and women who worked last summer is??
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