Blackboard Learn X DO IDEAS X C Statistics and Probability quest x + GOOGLE CHROME 4m ago C ideas.humber.ca/assess2/?cid=282&aid=7741#/skip/6 Vybz Kartel - Snitch Bitch (Official Audio) www.youtube.com Apps Instagram Maps M Gmail YouTube my lab it business blackboard T textidium BUSS SUMMER S BUSS SUMMER M... blac Recommended: VybzKartelRadio 1 more notification Score: 0/30 0/10 answered Question 6 C0/5 pts 9 3 0 Details Business students taking statistics at Colonel Samuel College believe that the mean score on a first statistics test is at most 64. An instructor, intending to prove that the mean score is higher, randomly samples 12 statistics students and obtains the following scores: 66.5 68.4 83.2 83.2 73.5 68.4 64.3 63.9 9 66.5 62.7 73.5 62.7 Download CSV Test grades are believed to be normally distributed. Use a significance level of 5%. Round answers to at least 3 decimal places. A. Select the appropriate alternative hypothesis, H1 or Ha : OH 2 64 OH 64 OH = 64 Ou 64 B. Calculate the sample mean: C. Calculate the estimated standard error of the sample mean: D. Calculate the test statistic: t = E. State the critical value at a = 0.05: F. Decision: O Fail to reject the null hypothesis. O Reject the null hypothesis. Question Help: @ Video Check AnswerBlackboard Learn X DO IDEAS X C Get Homework Help With Cheg X + C ideas.humber.ca/assess2/?cid=282&aid=7741#/skip/7 N Update Apps Instagram Maps M Gmail YouTube my lab it business blackboard T textidium BUSS SUMMER S BUSS SUMMER M... blackboard tophat Reading List Quiz 10 - Hypothesis Testing Progress saved Submit and End Voce Score: 0/30 0/10 answered . Question 7 0/4 pts 9 3 0 Details The manufacturer of a particular brand of tires claims they average at least 79,000 km before needing to be replaced. From past studies of this tire, it is known that the population standard deviation is 13,100 km. survey of tire owners was conducted to determine if the mileage of the tires is lower han 79,000 km. From the 38 tires sampled, the mean lifespan was 77,000 km. Testing at a = 10%, can we prove that the data is inconsistent with the manufacturers claim? A. We should use a [? v test. B. What are the correct hypotheses? Ho: [Select an answer V ? v H1: [Select an answer ? v Based on the hypotheses, find the following (round correct to at least 2 decimal places): C. Test Statistic = D. Critical Value = ( note the direction of H1) E. The correct decision is to Select an answer v . F. The correct conclusion would be: O There is enough evidence to conclude that the tires last less than the kilometres claimed O There is enough evidence to conclude that the tires do not last less than the kilometres claimed O There is not enough evidence to conclude that the tires last less than the kilometres claimed There is not enough evidence to conclude that the tires do not last less than the kilometres claimed Question Help: Video Check