701-36-458+97-116-205+876-46+632+78 +338+270- 174-18-533+901-499475-91-306+53+687 -68+259-665+
51-971-239-823+76+333+48+129-826+14 +531-77+16+713
148+23-674-388+19+144-987-33+625-44 8+69+68+299-57 92+486+47-862+89+541+27+620-691+728 -63-89+234-39
55+176-505+864+59-238-32+581+47-653 +382-91+27+
751+53-982+39+567-992+137+62-438+86 1+99-
444-705-28-128+692+43-365+207-14 what is this equal

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?