A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 90%
confident that the sample mean is correct to within
±$60
of the population mean annual family medical expenses. A previous study indicates that the standard deviation is approximately
$281.
a. How large a sample is necessary?
b. If management wants to be correct to within
±$15,
how many employees need to be selected?

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.

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.

what statement? is there an image?