Please answer part 2 and compute the test value

Telephone Calls A researcher knew that before cell phones, a person made on average 3.1 calls per day. He believes that the number of calls made per day today is higher. He selects a random sample of 34 individuals who use a cell phone and asks them to keep track of the number of calls that they made on a certain day. The mean was 3.2. At a = 0.05, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.8. Assume that the variable is normally distributed. Use the critical value method with tables. Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. Dlo Ho:H = 3.1 not claim HER> 3.1 claim This hypothesis test is a one-tailed test. Part: 1 / 5 Part 2 of 5 Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas. Critical value(s): Skip Part Check An