As per a new overview, the quantity of hours that school green beans go through concentrating every week is ordinarily disseminated with a mean of 16 hours and a standard deviation of 3 hours. Utilizing the 68-95-99.7 principle, answer the accompanying inquiries. 99.7% 95% 68%-a) What number of hours is 3 standard deviations over the mean? (1p/) b) If there were 2800 understudies studied, what number of understudies detailed occasions that were under 10 hours?**

5,6

At the point when the precision of gas siphons in Michigan was inspected, fuel quality specialists tracked down that 1,229 were not exact out of the 6,985 siphons they analyzed. Utilize a 0.01 degree of importance to test an industry delegate's case that under 20% of gas siphons in Michigan are mistaken. Utilize the p-esteem technique and the customary strategy.