Can anyone help me with these questions please?
...
Answers: 1
Mathematics, 21.06.2019 21:50
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”?
Answers: 1
Mathematics, 21.06.2019 22:30
Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.
Answers: 2
Mathematics, 21.06.2019 22:30
Agallon of apple juice cost $7 a pack of eight 4.23oz box of apple juice $2.39 which is a better deal
Answers: 1
Mathematics, 15.12.2020 21:50
Mathematics, 15.12.2020 21:50
History, 15.12.2020 21:50
Social Studies, 15.12.2020 21:50
Business, 15.12.2020 21:50
Advanced Placement (AP), 15.12.2020 21:50
Business, 15.12.2020 21:50