for #4 is it 2.75-3.21 or 2.73-3.23

Question 6 Which sampling technique tends to have the largest sampling error? O All techniques have the same sampling error. O Simple random sampling O Systematic random sampling Stratified random sampling Cluster sampling Question 1 Choose a FALSE statement regarding the t-distribution. All t distributions have a mean of zero and a standard deviation of 1. The higher the degree of confidence, the larger the sample required to give a certain precision. The t distribution is based on the assumption that the population of interest is normal or nearly normal. O The t distribution has a greater spread than does the z distribution. As a result, the critical values of t for a given level of significance are larger in magnitude than the corresponding z critical values. There is not one t distribution, but rather a "family" of t distributions. Question 4 4 pts A survey of 25 grocery stores revealed that the average price of a gallon of milk was $2.98 with the sample STANDARD ERROR of $0.10. What is the 98% confidence interval to estimate the true cost of a gallon of milk? $2.75 to $3.21 O $2.95 to $3.01 $2.73 to $3.23 $2.94 to $3.02 $2.85 to $3.11