Question
A certain brand of mosquito repellent claims that it will effectively repel mosquitoes for at least 3 hours. A local biologist thinks that the companies
A certain brand of mosquito repellent claims that it will effectively repel mosquitoes for at least 3 hours. A local biologist thinks that the companies claim is exaggerated and the length of time for which this brand of mosquito repellent is effective is actually less than 3 hours. To test the hypothesis, the biologist devised a random sample of 103 trials and found the mosquito repellent was effective for 2.92 hours, on average. Use the p-value method to test the hypothesis that the mean effective length of time if this brand mosquito repellent is less than 3 hours, using a significance level of 10%. Assume the standard deviation of the distribution of all times for which this brand of mosquito repellent is effective is known to be 0.63 hoursA) state the null and alternative hypothesis B) determine the test statistic C) determine the p valueD) determine the appropriate conclusion (decision)
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