The average cost for teeth straightening with metal braces is approximately $5400. A nationwide franchise thinks that its cost is below that figure. A random sample of 28 patients across the country had an average cost of $5250 with standard deviation of $629. At or = 0.025. can it be concluded that the mean is less than $5400? Step 1: State hypotheses by filling in the symbol (=. <.>, or not equal) and the populatio mean: H0: p Blank 1 Blank H1: u Blank 3: Blank 4. Step 2: Find the critical value (from the table) (example: 2.345 or -2.345 or +I- 2.345) Critical tvalue is: Blank 5 Step 3: Compute the test value using the formula (round to two decimal places. example 6.45): T test value is: Blank 6 Step 4: Reject the null or do not reject the null (type in either Reject the null or do not reject the null only): Blank 7 ' Step 5: Conclusion sentence (type in either is or is not only, to reflect what you found): There Blank 8 enough evidence to support the claim that the mean cost of braces is less than $5400