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The average length of hockey sticks produced at an assembly line is 185 cm with a standard deviation of 15 cm. Furthermore, it is known that the length of the hockey sticks is normally distributed.
1. What is the probability that a randomly selected hockey stick will have a length of at least 193 cm?
2. Fill in the blank: 12.5% of the hockey sticks produced are longer than _____ cm?
The average age of students in a career college is 28 years with a standard deviation of 12 years. It is known that the age of the students follows a normal distribution.
1. What is the probability that a randomly selected student is older than 32 years old?
2. Fill in the blank: 25% of the students are older than ______ years?
If a chi-square test is used to evaluate the relationship, what is the expected frequency for men preferring packaging A?
questionpart athe quarterly earnings in millions of dollars of a large textile manufacturing company have been
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A consumer organization wants to know whether there is a difference in the price of a particular toy at three different types of stores.The price of the toy was checked in a sample of five discount stores, five variety stores, and five department ..
Question 1: Compute the present value of the woodland. Assuming 15% required rate of return
Earthquakes occur in a given region in accordance with a Poisson process with rate 5 per year. What is the probability there will be at least two earthquakes in the first half of 2015?
Now analyze the data in the proper way. Compute the sample mean and variance of the differences. Then compute the t statistic, degrees of freedom, and P-value.
a bank branch wants to estimate the proportion of all customers who visit the bank primarily to use the outdoor atm. in
a hot topic of debate is whether the legal driving age should be raised to eighteen. from a random sample of 400
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
Testing In taking a quiz with 6 multiple-choice questions, a student knows that two of the possible five answers to the first question are not correct.
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