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1. A diagnostic kit (for measuring a particular protein level in blood) can be used to test 16 blood samples. To check for kit-to-kit consistency the manu facturer tested the blood from 16 patients with two different kits. The data are recorded in diagnost ic .txt. What is your assessment of kit-to-kit con sistency.
2. The diameters of 14 rods are measured twice, once with each of two different calipers. Is there a difference between the two types of caliper? Write a brief report addressing this question based on the data in caliper .txt.
At 0.01 significance level can we conclude that mean fare has increased? Determine the p-value?
In a bumper test, three types of autos were deliberately crashed into a barrier at 5mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Are mean crash damages the sa..
Develop a 99% confidence interval for the population proportion.
The men took an average of 20.5 hours per year of personal time with a standard deviation of 2.75 hours. What is the pooled estimate of the variance? Round to three decimal places.
To determine monthly rental prices of apartment units in San Francisco Bay area, samples were constructed in the following ways. Identify the technique used to produce each sample.
Interstate 90 is the longest of the ease-west U.S. interstate highways with its 3,112 miles stretching from Boston, MA at I-93 on the eastern end to Seattle
the mathematics department is interested in observing the performance of their first-year undergraduate students. the
Use Excel and the data to test whether the mean alcohol expenditures for UCM students is equal to that of SBU students using a 1 % level of significance.
They decide to sample some fast-food restaurants currently operating to estimate the monthly cost of electricity. They want to be 90% confident of their results and want the error of the interval estimate to be no more than $100.
If the population is normally distributed then the sample mean is also normally distributed even for small sample size.
A bookcase contains 3 statistics books and 4 biology books. If 2 books are chosen at random, find the chance that both are statistics books.
How much can students expect to make on graduation? Explain. What variables (if any) affect how much a student can expect to make? Why/why not?
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