Choo Choo Paper Company makes various types of paper products. One of their products is a 30 mils thick paper. In order to ensure that the thickness of the paper meets the 30 mils specification, random cuts of paper are selected and the thickness of each cut is measured. A sample of 256 cuts had a mean thickness of 30.3 mils with a standard deviation of 4 mils.
a. Compute the standard error of the mean.
b. At the .05 level of significance using the critical value approach, test to see if the mean thickness is significantly more than 30 mils.
c. Show that the p-value approach results in the same conclusion as that of part b.
Question 2
An advantage of stratified simple random sampling is that
a. only a portion of the strata must be sampled.
b. estimates of population parameters for each stratum are automatically available.
c. desired precision and sample size are independent decisions.
d. the strata are automatically formed.
Major types of microbial cell aggregations found in phylum Cyanobacteria.
Various types of fractures.
Immunogenicity of Different Types of Antigens
Structures of the major types of asparagine-linked (N-linked) oligosaccharides
Types of Bacteria
Types of wind deposits