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1. This problem is in reference to students who may or may not take advantage of the opportunities provided in QMB such as homework. Some of the students pass the course, and some of them do not pass. Research indicates that 40% of the students do the assigned homework. Of the students who do homework, there is an 80% chance they will pass the course. The probability of not passing if the students does not do the homework is 90%. What is the probability of a student not doing homework or passing?
2. In a survey about soft drinks it was found that 5% of the respondents like diet soft drinks. 12% of the respondents like the brand Coke. Of the diet soda drinkers, 40% like Coke. What is the probability that a respondent did like diet drinks or did not like Coke?
suppose you are the marketing director for a childrens breakfast cereal and you have traditionally allocated a
we are supposing that the proportion of all adults who think that two children is ideal is p0.52. what is the
cookie sales at a bakery follow a normal distribution with expected value of 10000 cookies. on 90 percent of days the
Your company ships a lot of packages needing quick delivery and short notice. In the past, you have used Speedy Air Delivery Service, but you are beginning to receive complaints from customers who say they are not receiving their packages on time.
snowfalls occur randomly and independently over the course of winter. the average is one snowfall every 3 days.a what
Random sample of 250 americans is selected, the mean of this sample belongs to a sampling distribution. What is the shape of this sampling distribution?
let the number of phone calls received by a switchboard during a 5-minute interval be a random variable x with
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Convert each of the following z intervals to x intervals.
a doctor wants to estimate the hdl cholesterol of all 20-to 29- year-old females. how many subjects are needed to
The following data were collected as part of a study of coffee consumption among male and female undergraduate students. The following reflects cups per day consumed:
Neckwarmers. Mountainside Fleece sold 40 Neckwarmers. Solid-color neckwarmers sold for $9.90 each and print ones sold for $12.75 each.
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