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1) When the necessary conditions are met, a two-tail test is being conducted to test the difference between two population proportions. the two sample proportions are P1 = 0.25 and P2 = 0.20 and the standard error of the sampling distribution of P1 - P2 is 0.04. the calculated value of the test statistic will be?
2) When the necessary conditions are met a two-tail test is being conducted to test the difference between two populations means but your statistical software prvides only a one-tail area of 0.036 as part of its output. The p-value for this two-tail test will be?
If the probability that it will rain tomorrow is 0.33, then what is the probability that it will not rain tomorrow?
In optimal solution, determinethe critical path?
How does your sample compare to this theoretical distribution of sample means and what are the mean, variance, and standard deviation of the observations in your sample?
Construct a 90% confidence interval for the standard deviation of the number of hours this firm's employees spend on work-related activities in a typical week.
What is the probability that the mean life-span of a sample of 64 randomly selected bulbs will exceed 727 hours?
A spokesman for a popular television game show claims that contestants on the show win an average of $1200. In a random sample, 35 contestants were questioned on the amount of money they had won in order to test the hypothesis.
A sample of 60 students from a large university is taken. The average age in the sample was 22 years with a standard deviation of 6 years.
Describe a psychological research situation or scenario that would use a nonparametric test. Why would the nonparametric test be used?
Determine a 95% confidence interval for the population mean.
According to the National Football League, the average salary for players for the 2010 season was about $1.9 million while the median salary is around $770,000. Why are both numbers reported? What might the difference between the two statistics me..
Mr.Smith works on a temporary basis. The mean length of each job he gets is three months. If the amount of time he spends between jobs is exponentially distributed with distributed with mean 2, then at what rate does Mr. Smith get new job?
Find the 95% confidence interval for the true population mean. Identify the point estimate for mean and margin of error.
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