Answer:
-25,810
Step-by-step explanation:
The simplified ratio would be 4 to 1! hope this helps :)
To do probability you just look at the possible outcomes and put it over the total outcomes.
For example question 1.
A dice has 6 total outcomes so we know it will be out of 6.
the question says that we are looking for evens and there are 3 possible outcomes. the probability for the dice will be 3/6=1/2
The second part of the question is if a coin lands head up. the total outcomes is 2. the possible outcomes is 1. The probability that the coin will land on heads is 1/2. The answer to question 1 is 1/2
Answer:
Step-by-step explanation:
Given that the yield point of a particular type of mild steel-reinforcing bar is known to be normally distributed with σ = 100
Modified mean without change of sigma = 8439
Sample size n =25
Std error of sample =
For 90% confidence interval we use Z critical value since we know population std deviation
Margin of error =
a) Confidence interval
=
b)For 92% critical value changes to 1.75
Confidence interval
=
4 x = 25 log(x)
See the answer here
http://www.wolframalpha.com/input/?i=Write%204x%20%3D%2025%20as%20a%20logarithmic%20function.a