If we are running a hypothesis test to see if the true mean breaking strength of Acme rope is less than 1000 pounds at significance level .025 with a sample of size 4 and we assume that Acme rope...

If we are running a hypothesis test to see if the true mean breaking strength of Acme rope is less than 1000 pounds at significance level .025 with a sample of size 4 and we assume that Acme rope breaking strength is normally distributed with standard deviation 50 pounds, then what is the critical value of the standardized test statistic (three decimal place accuracy) for this hypothesis test?