Acar manufacturer claims that the company's newest model has a peak power of exactly 329 horsepower. katherine is a reporter for an automotive magazine. she is testing the manufacturer's claim and says that the population mean peak power is less than the advertised amount. she measures the peak horsepower of 42 randomly selected cars of the new model. the sample mean is 327.74 horsepower with a standard deviation of 2.41 horsepower. should katherine reject or fail to reject the null hypothesis given the sample data below? • h = 329 versus h: < 329 • a=0.05 (significance level) .te-3.39 with 41 degrees of freedom . p-value< 0.005select the correct answer below: a. reject the null hypothesis because p-value < 0.005 is less than the significance level a = 0.05. b. reject the null hypothesis because -3.39 < 0.05. c. fail to reject the null hypothesis because p-value < 0.005 is less than the significance level a 0,05

A. Reject the null hypothesis because p-value < 0.005 is less than the significance level a = 0.05

Step-by-step explanation:

In hypothesis test, test statistic calculated and it's p-value is compared against the significance level. If it is less than the significance level, the result is significant at the given significance level. In this case one can reject the null hypothesis in favor of the alternate hypothesis.

In this example Katherine find test statistic -3.39, and p-value < 0.005. Thus she can conclude there is significant evidence that the population mean peak power is less than the advertised amount

b

step-by-step explanation:

points are handed out whenever you post answers.

brainliest answers are handed out by the person asking the question, so whether your answer is picked depends entirely on whether the asker bothers to pick

if you're asking about your rank, it depends on having a certain number of points and a certain number of brainliest answers. for example, at the time of this writing, i have 44338 points out of 15000 needed for the next (nearly triple the requirement! ) but i only have 24 out of 50 required brainliest answers. this number decays, meaning after a certain amount of time (i think about a month), the total number of brainliest answers you've earned doesn't count toward this total. (i've been stuck at the same rank for a long

the lesson to learn here is that you shouldn't worry about points or rank. chances are, no matter how good an answer you may provide, your efforts will go mostly unnoticed unless you focus on the newest/most active questions that get posted.