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1. Develop histograms showing the distribution of rivet diameters from the original and new supplier correct answer. 2. Compute the sample means and standard deviations for the two sets of data. 3. Comment on whether it appears the assumptions required for testing if the two populations have equal mean diameters are satisfied. 4. Select a level of significance for the testing whether the two suppliers have rivets with equal mean diameters. Discuss the factors you used in arriving at the level of significance you have selected. 5. Perform the appropriate null and alternative hypothesis test. Discuss the results.
Name six virtues and characteristics of problems and hypothesis. Name some tips for identifying and developing formal research problems.
A sporting goods producer claims that the variance of the strengths of a certain fishing line is 15.9. A random sample of 15 spools has a variance of 21.8. At "alpha" = 0.01, can the claim be proven wrong
Based on the model N(1152,84) describing Angus steer weights, what are the cutoff values for.
Calculate the standard normal distribution value
Use relative frequencies to estimate the probability that a seed will not germinate. What is your estimate? Use relative frequencies to estimate the probability that a seed will not germinate.
1. a die is continuously rolled until the total sum of all rolls exceeds 225. what is the probability that at least 55
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
At the .10 significance level, can we conclude that there is a difference in the amounts quoted?
Determine marginal probability distributions of X and Y . Compute conditional probability P ( Y = 2 | X = 1)
Draw a scatter diagram of the following bivariate data.
Chosen field within a year after graduation. Find the probability that 11 randomly selected graduates all find jobs in their chosen field within a year of graduating.
question 1 a sample of the various prices for a particular product has been conducted in 16 stores which were selected
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