Find the 15th term of the arithmetic sequence x+7,3x+2,5x-3

15th term = 29x-63

Step-by-step explanation:

The correct option is  B

Step-by-step explanation:

From the question we are told that

   The  sample size is  

    The  proportion that choose to vaccinate the teen boys is  

considering the first statement

The 95% confidence interval is 12% ± the margin of error*standard deviation is  false because

The 95% confidence interval is is  %12 ± the margin of error

considering the second statement

The confidence interval should not be calculated due to the small sample size is true because from the central limit theorem

   np =  64 * 0.12 =  7.68

and this value is  less than 10  hence the confidence interval should not be calculated

considering the third statement

A 99% confidence interval will be smaller than the 90% confidence interval is false

  This is because as the confidence level increase (for example  from 90% to  99%) the margin of error increase which increases the confidence interval