A decision maker is interested in estimating the mean of a population based on a random sample. She wants the confidence level to be % and the margin of error to be . She does not know what the population standard deviation is, so she has selected the pilot sample below. Based on this pilot sample, how many more items must be sampled so that the decision maker can make the desired confidence interval estimate? The decision maker should sample nothing more items to make the desired confidence interval estimate.

Complete Question

The complete question is shown on the first uploaded image

The value is

Step-by-step explanation:

From the question we are told that

    The margin of error is  

   The data is  

      8.70      4.79    10.95   15.19    14.06

      16.99     1.22    9.02    14.39     5.73

      7.28     3.22     2.66    6.13       6.93

Generally the sample mean is mathematically represented as

=>  

=>  

Generally the standard deviation is mathematically represented as  

=>    

=>    

From the question we are told the confidence level is  98% , hence the level of significance is    

=>  

Generally the degree of freedom is mathematically represented as

=>    

=>    

Generally from the t distribution table the critical value  of   at a degree of freedom of   is  

Generally the sample size is mathematically represented as

=>    

=>    

think about it deeply and passionately about this property

i am sorry