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Artificial insemination is an important tool in agriculture, but freezing semen for later use can reduce its potency (ability to produce offspring). Here we are trying to understand the effect of freezing on the potency of chicken semen. Four semen mixtures are prepared, consisting of equal parts of either fresh or frozen Rhode Island Red semen, and either fresh or frozen White Leghorn semen. Sixteen batches of Rhode Island Red hens are assigned at random, four to each of the four treatments. Each batch of hens is inseminated with the appropriate mixture, and the response measured is the fraction of the hatching eggs that have white feathers and thus White Leghorn fathers (data from Tajima 1987). Analyze these data to determine how freezing affects potency of chicken semen.
a professor wishes to recruit 2 students for a research project. the probability that a student will accept the
Over the last year the absentee rate at a large corporation averaged 8.2 days absent with a standard deviation of 6 days. One department with 40 employees had an absentee rate of 12 days per employee.
A study was designed to compare variability of male and female diastolic blood pressure. The null hypothesis was that the population standard deviation were equal versus the alternative that they were not equal.
(PEO)2 is conjugated to(Asp)50. In neutral to alkaline solution, the peptide carboxlic acid side-chains of (Asp)50 are deprotonated and negatively charged, making the entire co-polymer unstructured
what is indicated by a large variance for a sample of difference scores?a consistent treatment effect and a high
an electronic fuse is produced by two production lines in a manufacturing operation. assume that both production lines
a survey was done and found that the best chocolate is dark chocolate. 29 of clients prefer dark chocolate.nbspnbsp
You then sort by random numbers in ascending order. Finally, you take the first 50 sorted employees as your sample. Does this approach constitute a statistical or a nonstatistical sample?
a researcher believes exercise reduces anxiety in women. she identifies a group of women who had not exercised before
high density lipoprotein hdl in healthy males follows a normal distribution with a mean of 50 and a standard deviation
(1) Using the mean and median given above, what is the likely shape of the distribution of the number of books read in a year? (2) Give the correct notation for the value "17". Is it a parameter or a statistic? (3) Give notation for and define the..
The urinary fluoride concentration (parts per million) was measured both for a sample of livestock grazing in an area previously exposed to fluoride pollution and for a similar sample grazing in an unpolluted region
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