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An insurance industry report indicated that 40 percent of those persons involved in minor traffic accidents this year have been involved in at least one other traffic accident in the last five years. An advisory group decided to investigate this claim, believing it was too large. A sample of 200 traffic accidents this year showed 74 persons were also involved in another accident within the last five years. Use the .01 significance level.
a. Compute the value of z and state your decision regarding the null hypothesis.
b. Determine and interpret the p-value.
Find out the probability that the return for common stocks will be more than 0%.
Analyst computes production cost per unit in each order and averages these to get $50.
Using 5% level of significance, is there any difference in proportion of guests who would select the two resorts? What is your conclusion?
Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 81.
Formulate a linear programming model for this problem.
Using a 1% level of significance, can the hypothesis that the distributions for the student's scores are identical be accepted?
To test whether there is a significant mean difference among the three.
Solve different inventory control problems using an appropriate OR method.
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Build a 95 percent confidence interval for mu, population mean.
We are interested in comparing the proportions of males and females who think earning a large salary is very important to them. I surveyed 200 of each gender and recorded their answers to the question as yes or no.
Find out 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
Can we conclude that there is a positive association between the size of the home and the selling price? Use the .05 significance level.
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