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Q1) Using AIU's survey responses from AIU data set, complete following requirements in form of report:
Create two-tailed hypothesis test on either intrinsic or extrinsic variable's data, by using a .05 significance level. Begin by making a null and the alternate statement. Use Microsoft Excel to process your data. Copy and paste the results of output to your report in Microsoft Word. Recognize the significance level, test statistic and critical value. Mention whether you are refusing or failing to reject null hypothesis statement.
Q2) Number of vehicles passing specified point on highway averages 4 per minute.
i) Determine probability which exactly 3 vehicles pass this point in next minute. Make some reasonable assumptions.
ii) Determine the probability which at least 4 vehicles pass this point in next 2 minutes.
iii) Determine expectation of number of vehicles passing through this specified point in ten minutes.
At 5% level of significance, does this sample prove violation of guideline that average patient must pay no more than $250 out-of-pocket? Write your hypotheses and decision rule.
Find the probability that at least one subject experiences headaches. Is it unusual to have at least one of six subjects experience headaches?
Mean threshold values and standard deviations for the three groups are given below. Normal probability plots showed the three populations were well approximated by the Normal distribution.
Z score on comparison distribution for sample score and your conclusion. Suppose that all population are normally distributed.
Draw a normal probability plot for residuals using excel or Minitab. Do the residuals seem normally distributed? If yes, why?
What is the probability that a respondent said neither the Big Ten nor the Pac-10 would have a team in the Rose Bowl?
Compute mean and standard deviation for sample of N = 8 females and sample of N = 8 for males.
A sample of n observations is taken from a population. When performing statistical inference about a population variance, the appropriate chi-square distribution has:
Find a 95% confidence interval for the mean daily caloric intake. Interpret this interval.
What is the probability that the team wins tonight and that there will be a large crowd at tomorrow's game?
If wages were increased by $1.00, what is the expected effect on the number of complaints received per employee? How can you tell?
Suppose that sales of lemonade and sales of brownies are independent, determine standard deviation in his revenue.
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