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Recent crime reports indicate that 5.2 motor vehicle thefts occur each minute in the United States. Assume that the distribution of thefts per minute can be approximated by the Poisson probability distribution.
a) Calculate the probability exactly four thefts occur in a minute.
b) What is the probability there are four or more thefts in a minute?
c) What is the probability there is one or less theft in a minute?
When the p-value is used for hypothesis testing, the null hypothesis is rejected if
A sample of 10 urgent and non-urgent patients was conducted to determine average wait time. The hospital wants to be sure that urgent patients do not wait as long as non-urgent patients. The following hypotheses have been formulated.
Test whether the mean rate is less than 6%. Use P-value approach.
The Scatter plot can more easily be generated using the Chart procedure.
Compute the following linear programming problem and describe the special case of a linear programming problem in which.
What is the null hypothesis? Use α =0.05. Compute critical value. Use α =0.05.
Test the claim that for the adult population of one town, the mean annual salary is given by μ = $30,000.
The results for college x was a mean of 5 hours and an estimated population variance of 2 hours: for college y, m= 4, s 2 =1.5; and for college Z, M= 6, s 2 =2.5 what should you conclude? Use the .5 level.
Give three logically possible directions of casualty, indicating for each direction whether it is a reasonable explanation for the correlation in light of the variables involved (and why).
Prepare an ANOVA table and test the null hypothesis of no linear relationship between the two variables.
Use analysis of variance to test any differences in mean glue strengths.
Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.
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