Two owners of a cattle ranch, Jo and Val, want to find the average weight for the ranch's 200 cows. Instead of weighing all of the cows: Jo weighs 25 cows and gets an average weight of 1,350 pounds (stdev 50) Val weighs 100 cows and gets an average weight of 1,420 pounds (stdev 50) What is Jo's margin of error, rounded to the nearest whole number? (The formula is 1.96 straight x left parenthesis StdDev right parenthesis divided by square root of straight N)

The  value  is

Step-by-step explanation:

From the question we are told that

  The mean of Jo  cows is  

  The standard deviation of Jo cow is  

  The mean of Val  cows is

   The standard deviation of Val  cows  is  

    The sample size for both Val  and  Jo  is  n = 25

Let assume that the level of significance is  

Generally from the normal distribution table the critical value  of   is  

Generally the margin of error is mathematically represented as  

Hence margin of error for Jo is  

=>  

=>  

4

step-by-step explanation: