8. Which of the following must be true for an estimator of a population parameter to be ono
a. The sampling distribution of the estimator is normal.
b. The expected value of the estimator is equal to the population parameter.
C. The sampling distribution of the estimator is the same shape as the distribution of the
population parameter.
The variability of the sampling distribution of the estimator is equal to the variability of the
population parameter.
e. The variability of the sampling distribution of the estimator is less than the variability of the
population parameter.

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

step-by-step explanation:

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.