Answer:
There are total number of pet fish and reptile pets are .
Step-by-step explanation:
Number of pet fish are and the number of pet reptiles are .
It is required to find the total number of pet fish and reptile pets in the United States. It can be done by simply adding the above numbers such that total numbers are given by :
So, there are total number of pet fish and reptile pets are .
Answer:
The 85% confidence interval for the true mean number of reproductions per hour for the virus is between 10.1 and 10.3.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 10.2 - 0.1 = 10.1 reproductions per hour.
The upper end of the interval is the sample mean added to M. So it is 10.2 + 0.1 = 10.3 reproductions per hour.
The 85% confidence interval for the true mean number of reproductions per hour for the virus is between 10.1 and 10.3.
Answer: cos of theta= square root 3//2 and the measure of the reference angle is 30
Step-by-step explanation:
11π/6 reference angle is π/6 which is 30 degree so the measure of the reference angle is 30 degrees is correct. sin of 330 is sqr root of 3 divided by 2. Since it in the 4th quadrant and cos refers to x -axis it is positive.
The answer is d I know for sure