Answer:
130kg
Step-by-step explanation:
First you need to convert 250kg into grams by multiplying it by 1000 since there are 1000g in 1kg that will give you an answer of 250000g. Then subtract 120000g from 250000g and you get 130000g. Then divide that answer by 1000 to get kilograms again.
250*1000g = 250000g
250000g-120000g = 130000g
130000/1000g = 130kg
Answer:
The answer is false
Step-by-step explanation:
In a sample above 30 obs like this the confidence interval is defined as
X+- t* (s/sqrt(n)) where X is the mean t the tvalue for a given confidence level, n the size of sample and s standar deviation.
To find de appropiate value of t we must see the T table where rows are degrees of freedom and columns significance level
The significance is obtained:
significance = 1 - confidence level = 1 - 0.9 = 0.10
Degrees of freedom (df) for the inteval are
df = n - 1 = 18 - 1 = 17
So we must look for the value of a t with 17 values and significance of 0.10 which in t table is 1.740 not 1.746 ( thats the t for 16 df)
Answer:
18.9 or 23.625
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
you see that multiply by 0 sign no matter what the answer will always be 0
Answer:
They help to visualize the problem
Step-by-step explanation: