Question 6 (1 point) () Listen Last year, the average price for a Nissan Altima SL with 50k miles was $22,000. This year, a sample of 100 vehicles showed a sample mean $22,300 with a standard deviation $1500. Would you conclude that price for this model has increased since last year? Which of the following is TRUE? This is a one-tailed, upper-tail test This is a two-tailed, upper-tail test This is a one-tailed, lower-tail test This is a two-tailed test