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In a sample of 1000 voters, 520 plan to vote for candidate A. Find the 95% confidence interval for the percent in favor of candidate A
the time taken for a sample of eight pieces of equipment to do a task has a mean of 52 minutes and a standard deviation
Explain how hypothesis testing may be applicable in the industry of law. Provide a specific example and set up the null and alternative hypothesis?
Calculate the safety stock for PVBs for each quarter. (σQ1 = 1877, σQ2 = 3361, σQ3 = 3851, σQ1 = 1877 and σQ4 = 8154). Assume the formula SS = z σtL1/2. Create a APP that minimises costs.
Using α = 0.05, does this sample provide enough evidence to conclude that the average utility bill in Delaware was lower in the winter of 2011-2012 than it was in the winter of 2010-2011?
a critically important aspect of customer service in a supermarket is the waiting time at the checkout defined as the
Make a his-togram of the distribution of these 31 scores. Does your plot show outliers, clear skewness, or other non- Normal features? Using a calculator, find the mean and standard deviation of these scores.
Dr. H wants to conduct a statistical test that will show her new medication to be effective in decreasing violence in criminals. What is the null hypothesis? What is the alternate hypothesis?
in the game of ludo a player has to throw one die and move a selected token based on the number shown on the die. if a
She randomly samples 67 CFOs and finds that 40 of them get their money news from newspapers. Does the test show enough evidence to reject the findings of Robert Half International? Use a = .05.
Construct a confidence interval for a level of confidence equal to 95%, we use z values that leave out, in the lower and the upper tails of the normal distribution, an area equal to?
Would you recommend test- ing H0 : m = 5 versus Ha : m> 5 or H0 : m= 5 versus Ha : m
Employees what is the mean and standard deviation for the expected number of employees making more than $70,000 per year #question.
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