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A research report concludes that there are significant differences among treatments, with "F(2,27) = 8.62, p < .01." If the same number of participants was used in all of the treatment conditions, then how many individuals were in each treatment?
Given the same sample mean and the same sample size which confidence interval estimate would be larger and why: One with a 90% confidence level or one with a 95% confidence level?
The question is, is it just sampling error that accounts for the difference, or is the local store different than the national numbers? This is a typical chi-square problem.
this exercise ilustrate that poor quality can affect schedule and cost. a manufacturing process has 100 customer order
Let X = duration of Old Faithful geyser (in seconds), and let Y = time (in minutes) until next eruption Is there a relationship between X and Y ? What is P (a
The mean equal to 16 oz. and standard deviation equals 0.6 oz. Find the probability that a bottle selected at random will contain less than 15 ounces?
The other measurement is below 10, i.e. where high measurements tend to cancel low measurements. Use these possibilities to compute the distribution of when n = 2(i.e., find , , etc.).
A manufacturer claims that he makes light bulbs each of which has a 0.9 probability of operating successfully when plugged in.
a study investigated how the size of a persons dwelling was related to their ownership of motor vehicles. they found
When using a t test for dependent means, show the steps involved in calculating the estimated population variance based on scores in this sample:
q1 an electronics company is about to launch a new product. if the serial number for each piece produced has the
Critically discuss the Central Limit Theorem? How large should the sample size be if the underlying distribution of the population values are:
Psychological test. For the sample data, n = 50,mean = 17.3 and S.D = 5.4.USE level of significance = .05. Complete hypotheses testing using P value approach.
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