A parachute company sells safety devices that are designed to fire, releasing the reserve parachute, at an average height of350.5 mwith a standard deviation of 12.3 m. The company recently upgraded the devices, which the lead engineer suspects has caused the standard deviation, , decrease. Measure the heights at which devices are fired to obtain a random sample oftwontheupdated devices. The heights at which the devices fire have a sample standard deviation of8.9 m. Assume that the heights to which the upgraded devices shoot follow a normal distribution. Can the engineer conclude that the population standard deviation,, is less than 12.3 m?To answer, complete the parts below to perform a hypothesis test. Use the significance level of0.05. (a) Formulate the null hypothesish and the alternative hypothesish that you would use to perform the test. ho: 02 12.3 S h 1: 6