attempted by a student in the past week. Assume the uald is approximately normal. 5. It is claimed that the current positivity rate (probability that a person tests positive) for COVID- 19 in a particular region of Texas is 9%. If 100 people are tested and 12 of them receive positive test results, does this data appear to support this claim? Use a significance level of 0.01. a. State the null and alternative hypotheses. b. Is the test two-tailed, left-tailed, or right-tailed? c. What is the test statistic? d. What is/are the critical value(s)? e. Do you reject the null hypothesis? f. What is the final conclusion?6. A manufacturing rm claims that the batteries used in their electronic games will last an average of 25 hours. To maintain this average, 25 batteries are tested each month. What conclusion should the firm draw if a sample of 25 batteries is tested and they are found to have a mean of f = 22.6 hours and a standard deviation of s = 4 hours? Assume the distribution of battery lives to be approximately normal and use a significance level of0.l. a. State the null and alternative hypotheses. b. Is the test two-tailed, lefttailed, or right-tailed? c. What is the test statistic? d. What is/'are the critical valueis)? e. Do you reject the null hypothesis? f. What is the final conclusion