Question

The daily collection of milk at a plant has averaged 850 milliliters for the last several years. An observer wants to know whether the average has chang in recent months. He randomly selects 40 days from the database and finds the average collection as x = 840 milliliters with a standard deviation 18 kilolitres. Test the appropriate hypothesis at 5% level of significance.​

Answer 1

Step-by-step explanation:

দুঃখিত এই ভিডিও একটি সমস্যা না