Apopulation is normal with a variance of 13. suppose you wish to estimate the population mean. find the sample size needed to assure with 68.26 percent confidence that the sample mean will not differ from the population mean by more than 2 units

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?

Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations. a. 22 b. 11 c. 27 d. 5

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?