Areport states that the cost of repairing a hybrid vehicle is falling even while typical repairs on conventional vehicles are getting more expensive. the most common hybrid repair, replacing the hybrid inverter assembly, had a mean repair cost of $ 3 comma 927 3,927 in 2012. industry experts suspect that the cost will continue to decrease given the increase in the number of technicians who have gained expertise on fixing gas-electric engines in recent months. suppose a sample of 100 100 hybrid inverter assembly repairs completed in the last month was selected. the sample mean repair cost was $ 3 comma 850 3,850 with the sample standard deviation of $ 300 300. complete parts (a) and (b) below. a. is there evidence that the population mean cost is less than $ 3 comma 927 3,927? (use a 0.10 0.10 level of significance.) state the null and alternative hypotheses. h0: mu μ greater than or equals ≥ $ 3927 3927 h1: mu μ less than < $ 3927 3927 (type integers or decimals.) find the test statistic for this hypothesis test. t subscript stat tstat equals = nothing (round to two decimal places as needed.) the critical value(s) for the test statistic is(are) nothing . (round to two decimal places as needed. use a comma to separate answers as needed.) is there sufficient evidence to reject the null hypothesis using alpha α equals = 0.10 0.10? a. do not reject do not reject the null hypothesis. there is insufficient insufficient evidence at the 0.10 0.10 level of significance that the population mean cost is less than $ 3 comma 927 3,927. b. reject reject the null hypothesis. there is sufficient sufficient evidence at the 0.10 0.10 level of significance that the population mean cost is greater than $ 3 comma 927 3,927. c. reject reject the null hypothesis. there is sufficient sufficient evidence at the 0.10 0.10 level of significance that the population mean cost is less than $ 3 comma 927 3,927. d. do not reject do not reject the null hypothesis. there is insufficient insufficient evidence at the 0.10 0.10 level of significance that the population mean cost is greater than $ 3 comma 927 3,927. b. determine the p-value and interpret its meaning.