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One of the non-destructive tests (NDTs) for assessment of the integrity of concrete structures is ultrasonic pulse velocity testing. The test can signal that a concrete section is either intact or that a problem exists. However, even when a section is intact, there is a small probability that the test equipment may signal a problem (thus generating what is known as a ‘false positive', or the probability of a concrete section actually being intact given that the equipment registers a problem.). Suppose that the probability for a "false positive" is 0.03. What is the probability that at least 1 in 10 successive sections signal a problem when in fact the sections are intact? (Note: Please assume that signals from successive sections are independent of each another.)
The F test is used in Analysis of Variance (ANOVA). When would a researcher use an ANOVA? Explain (one paragraph in length).
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
In government data, a household consists of all occupants of a dwelling unit, while a family consists of two or more persons who live together and are related by blood or marriage. So all families form households, but some households are not famil..
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
Find out the suitable critical value(s) for this situation given a 0.05 significance level. Find out/compute the value of sample test statistic.
Binomial distribution to find out the mean also standard deviation. Variance and standard deviation of a lot of 300 calculators.
At a large commercial bakery, one of the measures familiar with evaluate employees is the number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and bro..
Obtain a test statistic and p-value. Interpret the results at = .01.
Answer the following three questions based on what you know about statistics now.
Construct a 98 percent confidence interval estimate of the difference between the two sample means (Please show work).
At the 5% level of significance, can we infer that branch A has a significantly higher proportion of satisfied customers than branch B?
If there is an outage, there is a .05 probability that the resulting losses will be very large, approximately $ 80 million in lost earnings. Also, it is estimated that there is a .95 probability of only slight losses of around $ 1 million. What is..
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