Aresearcher wants to study the average lifetime of a certain brand of rechargeable batteries (in hours). in testing the hypothesis that the batteries duration is at least 1000 hours, a random sample of 25 rechargeable batteries is drawn from a normal population whose standard deviation is 200 and a sample mean of 940. use a significance level of 0.10. what is the hypothesis?
select one:
(a)- upper
(b)- lower
(c)- two

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.

according to egenuity the answer is

step-by-step explanation:

d. 344.22