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Assume that in a hypothesis test with null hypothesis Ho:u = 12.0 at alpha= 0.05, that a value of 10.0 for the sample mean results in the null hypothesis to be not rejected. That corresponds to a confidence interval result of
In looking at your business, when and why would you want to use a one-sample mean test (either z or t) or a two-sample t-test? Create a null and alternate hypothesis for one of these issues. How would you use the results?
A random variable X is normally distributed with mu = 60 and standard XXX = 11. What is zscore for X = 71
Explain the difference between the null hypothesis and the alternate hypothesis. How is the null hypothesis chosen (why is it null)? What is the importance of rejecting the null hypothesis, can we make a geneeral staement about the population base..
a biologist wishes to estimate the effect t of an antibiotic on the growth of a particular bacterium by examining the
Suppose a random sample of 25 swatches are selected. What is the probability that the mean of the sample is less than 235 pounds per square inch.
Employee motivation and its related fields.
A researcher used stepwise regression to create regression models to predict Birth-Rate (births per1000) using five predictors:
q1. if we have a sample size of 100 and the estimate of the population proportion is 0.10 the mean of the sampling
question according to a survey published by compsych corp. 54 of all workers read email while they are talking on the
find z value describeda find z such that 82 of the standard normal curve lies to the right of z.b find the z value such
there are 20 questions on the test. responces are ab c and d. each question is 5 points and only one response is
a hospital would like to determine whether there is a relationship between the level of satisfaction of workers with
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