Use the following information for problems 14 through 20. Thirty-two 1-Liter specimens of water were drawn from the water supply for a city and the concentration of lead in the specimen was measured. The average level of lead was 7.3 pg/Liter, and the standard deviation for the sample was 3.1 ug/Liter. Using a significance level of 0.05, do we have evidence the mean concentration of lead in the city's water supply is less than 10 ug/Liter? 14. The t critical value is -1.696 (fill in the blank}. 15. If the true mean equals the null mean the probability the test statistic value will be less than the t critical value is _]fill in the blank) 16. The test statistic value is (fill in the blank) 17. You reject the null hypothesis (a) Yes=(b} No (c) It is not possible to know if the null hypothesis should be rejected. 18. Our test result cannot be (a) A correct decision=(b} a Type I error {c} a Type II error 19. Given below are some possible values for the true mean (given in units of ug/Liter}. Which value will give the largest probability of a Type II error? (a) 72:00) 8.6 (c) 9.4 (d) 11.3 20. Given below are some possible values for the true mean (given in units of pg/Liter}. Which value will give the smallest probability of a Type II error? (b) 7.2=(b) 8.6 {c) 9.4 {d} 11.3