Answer Happy

Isabella, an accomplished Bay to Breakers runner, claims that the standard deviation for her time to run the 7.5 mile race is at most three minutes. To test her claim, Rupinder looks up five of her race times. They are 55 minutes, 61 minutes, 58 minutes, 63 minutes, and 57 minutes. (a) What is the hypothesis test? Ho: Select an answer Ha: Select an answer v (b) What is the xạ test statistic? Round to two decimal places. (b) What is the P-value? Round to two decimal places. (c) What is your decision at the 5% significance level? O Reject the null hypothesis. O Fail to reject the null hypothesis. (d) Based on the sample results, there is Select an answer to warrant rejection of Isabella's claim that the standard deviation of her running times is at most 3 minutes.