PROBLEM #8: HYPOTHESIS TESTING The battery manufacturer that makes the batteries for the municipal police department’s...
A manufacturer claims that the mean lifetime of its lithium batteries is 1100 hours but a group of homeowners believe their battery life is different than this manufacturer's claim. A homeowner selects 35 of these batteries and finds the mean lifetime to be 1080 hours with a standard deviation of 80 hours. Test the manufacturer's claim. Use a 10% level of significance and the p-value approach. Round the test statistic to the nearest thousandth. Need hypothesis testing, values of symbols,...
1. A manufacturer claims that the mean lifetime of its lithium battery is 1000 hours. A homeowner selects 40 batteries and finds the mean lifetime to be 990 hours with a standard deviation of 80 hours. Test the manufacturer's claim. Use alpha = 0.05. a. Calculate the test statistics. test statistics= (Round your answer to the nearest hundredth) Answer is not 0.79 or 0.80 2. A local juice manufacturer distributes juice in bottles labeled 12 ounces. A government agency thinks that...
answer what is blank! - 9 of 10 IDI MIST.HT.TH.02.0060a 16 points] Batteries R Us is a manufacturer of batteries and are testing a new production technique for the most popular battery type. It is known that the mean lifetime of these batteries made using the previous production technique was 66 hours. The standard deviation in battery lifetime is 5.7 hours and it is assumed that this has not changed. They would ke to know whether mean battery time has...