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A random sample of 12 parts from factory A has an average reliability of 4.48 with a sample standard deviation of 3.19. A random sample of 15 products from factory B has an average reliability of 2.36 with a sample Standard deviation of 2.01. Assume the populations are normally distributed and their variances Are not equal. At the 5% significance level, can one conclude the parts from factory B have higher reliability?
What is the alternative hypothesis and p-value?
a health care worker wishes to see if the average number of family day care homes per county is greater than the
sixty percent of college students weigh between 150-210 lb.identify degree of confidence level of confidence
Find the critical t-value that corresponds to 90% confidence. Assume 90 degrees of freedom.
Evaluate probabilities using the laws of probability, the standard normal distribution, t-distribution, or X2-distribution.
Write a two-to three-page short paper (10 percent of your total grade) comparing and contrasting the presentation of a historical event by two different historians. Historians do not only provide accounts of events (themes, eras, people);
A car dealership has 8 red, 13 silver, and 5 black cars on the lot. Ten cars are randomly chosen to be displayed in front of the dealership. Complete parts (a) through (c) below.
how often do you have to toss a coin to determine pheads within .1 of its true value with probability at least
The original data included values beyond those used to determine the regression equation (5 feet to 15 feet). At a distance of 2 feet, the observed success.
a multiple regression analysis has been done on 24 observations with the following partial anova table
Compute the mean, standard deviation and Coefficient of variation of the following data and comment on the result - Calculate the Karl Pearsons coefficient of correlation
How many pups out of a litter of 5 must develop hip problems for the police department to take action against this breeder with 95% confidence
Exercise gave data on height and whether or not a student had ever been bullied for 209 secondary school students in England.
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