You work for a horse farrier. you take a random sample of 75 quarter horses and determine that their mean height is 15.2 hands. which statement is true? a) you conclude that the height of all quarter horses is exactly 15.2 hands . b) you conclude that the mean height of all quarter horses is close to 15.2 hands. c) you conclude that the height of half of the quarter horses is less than 15.2 hands. d) you conclude that the height of half of the quarter horses is more than 15.2 hands.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

your answer would be b

step-by-step explanation:

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation: