Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars. Calculate the following.
sample mean = x
x = cars

Given information:

There are total 65 randomly selected car salespersons

x = the number of cars sold in one week

x   |  Frequency  

3      14  

4      19  

5      12  

6      9  

7      11  

Required information:

Find the sample mean  = ?

sample mean = 4.75

Step-by-step explanation:

The sample mean is calculated as

sample mean = (3*14+4*19+5*12+6*9+7*11)/65

sample mean = 309/65

sample mean = 4.75

Therefore, the mean number of cars sold in one week is 4.75 or ≈ 5

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.

is should be y = 5x

step-by-step explanation:

correct me if im wrong