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The running of red lights by drivers is a serious problem in many cities. A police officer is stationed near a major intersection to observe the traffic for several days.
a. Is the number of cars running a red light during a given light cycle a discrete or continuous random variable?
b. Is the time between the light turning red and the last car passing through the intersection a discrete or continuous random variable?
c. Are the brands of cars running a red light a discrete or continuous random variable?
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
Can the college conclude that the students in the new program are significantly different from the rest of the freshman class? Use a two-tailed test with a .O5.
Suppose 5.9% of certain population use public transportation to get to work. You randomly select 380 workers and ask them if they use public transportation to get to work.
performance analysis corporationchapel hill north carolinaperformance analysis corporation founded in 1979 is a
a landscaper wishes to use several different types of plants. the categories include color red yellow blue and green
The gestation period for human births can be taken as normally distributed with a mean of 266 days and a standard deviation of 16 days.If a gestation period is 276 days, what percentile among human births is this?
Is the z value positive or negative? Explain why it should be positive or negative.
spelling errors in a text are either nonword errors or word errors. a nonword error produces a string of letters that
If 9 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 47.6 tons. Assume that the variable is normally distributed.
Describe a way to measure the DV
The payouts for the Powerball lottery and their corresponding odds arean probabilities of occurrence are shown below. The price of a ticket is $1.00. Find the mean and standard deviation of the payout.
what is the taguchi constant for a device that costs 400 to repair and a tolerance of plus or minus 0.5 mm with a mean
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