A company manufactures light bulbs. The company wants the bulbs to have a mean life span of 993 hours. This average is maintained by periodically testing random samples of 25 light bulbs. If...

−t0.90 and t0.90​, then the company will be satisfied that it is manufacturing acceptable light bulbs. For a random​ sample, the mean life span of the sample is 999 hours and the standard deviation is 23 hours. Assume that life spans are approximately normally distributed. Is the company making acceptable light​ bulbs? Explain.

the company ___making acceptable light bulbs because t-value for the sample is t= and t0.90 = ( round two decimal places)