Myers Corporation has the following data related to direct m…

Myers Corporation has the following data related to direct materials costs for November: actual costs for 4,700 pounds of material were $5.30 per pound and standard costs for 4,420 pounds of material are $6.30 per pound. What is the direct materials price variance?

The number of M&Ms in a bag were counted and recorded. The d…

The number of M&Ms in a bag were counted and recorded. The data are summarized in the frequency distribution below. X 52-53 54-55 56-57 58-59 60-61 f 1 7 12 7 2 Calculate the relative frequency of the 5th class. Hint: Relative Frequency = Frequency / sample size 

In a survey of 15,200 college students, 5335 said they had s…

In a survey of 15,200 college students, 5335 said they had smoked in the last 30 days. In another survey of 12,900 college students taken four years later, 3444 said they had smoked in the last 30 days. At α = 0.10, can you support the claim that the proportion of college students who said they had smoked in the last 30 days has changed? State the null and alternative hypotheses if the earlier sample is the first sample and the later sample is the second sample. Hints: You’re dealing with two independent sample PROPORTIONS . *  changed/different (2 tailed test)

The probability that a person has green eyes is 0.12. If 4 p…

The probability that a person has green eyes is 0.12. If 4 people are randomly selected, what is the probability that all 4 people have green eyes?   Hint: Probability that all 4 people have green eyes = p(1st one does) AND p(2nd one does) AND p(3rd one does) AND p(4th one does).