40 according to google calculator
Answer: Third option is correct.
Step-by-step explanation:
since we have given that
There is a chance of 60% of rain each day this week,
Die is the best simulation tool that could be used to find the experimental probability that it will take at least three days before it rains.
As we know that the total outcomes of die is 6.
And from which we will take "at least three days before it rains " i.e. atleast three needs to come on die.
Hence, Third option is correct.
No
lets say a and b are positive numbers
that means -a and -b are negative
if you make the difference between these to it'd be
-a-(-b) which means -a+b, and if b>a then the difference is positive
Answer with explanation:
Given : The computed r -value = 0.45
Sample size : n=18
Degree of freedom : ![df=n-2=18-2=16](https://tex.z-dn.net/?f=df%3Dn-2%3D18-2%3D16)
Now, the critical value for Pearson correlation coefficient for a two-tailed test at a .05 level of significance will be :
( by critical correlation coefficient table)
Since ,
i.e. 0.45>0.468 , then we say that his Pearson correlation coefficient is not significant for a two-tailed test at a .05 level of significance.