90 POINTS
In a survey of 2035 workers, 73% reported working out 3 or more days a week. What is the margin of error? What is the interval that is likely to contain the exact percent of all people who work out 3 or more days a week?

Step-by-step explanation:

Margin of error is the critical value (t score or z score) times the standard error (standard deviation of the sample).

ME = CV × SE

Since n > 30, we can use the z score as the critical value.

Assuming 95% confidence, z = 1.960.

The standard error for a proportion is:

s = √(p (1 − p) / n)

Given p = 0.73 and n = 2035:

s = √(0.73 (1 − 0.73) / 2035)

s = 0.0098

Therefore, the margin of error is:

ME = 1.960 × 0.0098

ME = 0.019

The margin of error is 1.9%.  The interval that likely contains the true percent of all people who work out 3 or more days a week is:

73% ± 1.9%

(71.1%, 74.9%)

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.

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation: