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A random sample of 500 connecting rod pins contains 65 nonconforming units. Estimate the process fraction nonconforming. Construct a 90% upper confidence interval on the true process fraction nonconforming.
The sample showed an average of 56.2 miles per gallon with a standard deviation of 5 miles per gallon. With a 0.05 level of significance, do you accept or reject the manufacturer's claim.
A shoe salesman want to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data?
In a 0ne-tail test (l side) with z score of 1.645, what are the percentages for critical value and non-critical value?
Explain the difference between a logarithm of a product and the product of logarithms and give examples of each.
use the following sample data to test whether the GPA are different at the 0.05 level of significance.
Thirty randomly selected students took the calculus final. If the sample mean was 79 and the standard deviation was 8.5, construct a 99% confidence interval for the mean score of all students.
Anthony is measuring his participants' emotional states in two different ways (self-report and galvanic skin response) in order to gain a greater confidence that he is actually measuring the emotional that he thinks he is.
Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
Use exponential smoothing to develop simple, trend (Holt's), and seasonal models (both simple and trend) for forecasting the quarterly revenue from 1-year batteries.
when supermarket customers are offered free samplesthey take them 60 of the time. when 317 customers are observed what
a population has a mean of mu 30 and a dtadard deviation of 5. if 5 points were added to every score in the population
A survey indicates that male employees were more likely than females to relocate without being promoted. What information would you want to know before you accepted the results of this survey?
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