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Identify three discrete variables that appear in your current or future career. How do those variables affect your workplace, your product, or your personnel? How would changes in those variables affect these things?
Give the Z- score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected
In a sample of 1200 police officers, the mean annual salary was $33,000 and the standard deviation was $3200. A random sample of size 70 is drawn from this population. What is the probability that the mean annual salary is between $32,000 and $32,..
Given 7 male individuals in a Physical Education course, the number of sit ups each individual can do in a one minute period was recorded:
The summation sign is usually represented by:
If the variability of the filling machine is reduced to 0.025 ounce, verify that this will lower the required average amount of coffee to 4.050 ounces and yet keep 98 percent of the jars above 4 ounces.
At 5% level of significance, is there evidence of difference in mean life of bulbs made by the 2 kinds of machines. What is your conclusion?
For each of the F statistics given above find the degrees of freedom and an approximate P-value. Summarize the results of these tests.
Utilizing the .05 level, do the results support the psychologists' theory. Elucidate your answer to somebody whom has never had a course in statistics.
My question bout How do I use the TINV function within excel to back out the t-statistic for the test? Why did you use the TDIST function? I know ho to use the TINV function, but what does it mean to back out the t-statistic for the test?
Consider a hypothesis test of H0: μ = 0 against H1: μ > 0 where μ is the mean percent change in total body bone mineral content of young women. The population standard deviation is σ = 2. The level of significance for the test is α = 0.05.
what statement should be made about the null and alternative hypothesis based on sample data and significance level?
In a simple linear regression analysis of 18 data points the following ANOVA table was found.
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