作业帮Business statistic 里有三题求各位大侠帮忙
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Business statistic 里有三题求各位大侠帮忙
The following parts of question 5 are not based on the competitive or coordinative data and represent three different questions.
According to a survey 52% of adults think that protecting the environment should be given priority over developing energy supplies.36% think that developing energy supplies is more important,and 6% believe the two are equally important.The rest had no opinion.Suppose that a sample of 100 adults is quizzed on the subject.What is the probability that 48 or more think that protecting the environment should be given priority.Use an appropriate Excel function (x) and write down the formula shown in the formula bar.
The demand for a daily newspaper at a newsstand at a busy intersection is known to be normally distributed with a mean of 150 and a standard deviation of 25.How many newspapers should the newsstand operator order to ensure that he runs short on no more than 20% of days?Use an appropriate Excel function (x) and write down the formula shown in the formula bar.
Flaws in a carpet tend to occur randomly and independently at a rate of one every 200 square metres.What is the probability that a carpet that is 8 metres by 10 metres contains no flaws?Use an appropriate Excel function (x) and write down the formula shown in the formula bar.
The following parts of question 5 are not based on the competitive or coordinative data and represent three different questions.
According to a survey 52% of adults think that protecting the environment should be given priority over developing energy supplies.36% think that developing energy supplies is more important,and 6% believe the two are equally important.The rest had no opinion.Suppose that a sample of 100 adults is quizzed on the subject.What is the probability that 48 or more think that protecting the environment should be given priority.Use an appropriate Excel function (x) and write down the formula shown in the formula bar.
The demand for a daily newspaper at a newsstand at a busy intersection is known to be normally distributed with a mean of 150 and a standard deviation of 25.How many newspapers should the newsstand operator order to ensure that he runs short on no more than 20% of days?Use an appropriate Excel function (x) and write down the formula shown in the formula bar.
Flaws in a carpet tend to occur randomly and independently at a rate of one every 200 square metres.What is the probability that a carpet that is 8 metres by 10 metres contains no flaws?Use an appropriate Excel function (x) and write down the formula shown in the formula bar.
excel