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A survey showed that 17% of households spend more than $100 per week on groceries. Assume the population proportion is 0.17 and a simple random sample of 850 households will be selected from the population. What is the probability that the sample proportion will be within ±0.02 of the population proportion?
Assume that you choose a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
researchers are testing the effectiveness of a new smoking cessation program. at the close of the program the mean
What is the probability that a call lasted between 180 and 300 seconds? What is the length of a call if only 1% of all calls are shorter?
Martin Motors has in stock three cars of the same make and model. The president would like to compare the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline. For each trial, a gallon of gasoline..
The firms are actually violating at least one regulaltion, what is the pmf of the number of firms visited by the inspector that are in violation of at least one regulation?
lily estimates that her time to fall asleep each night is approximately exponentially distributed. it takes her an
five workers are available to perform four jobs. the time it takes each worker to perform each job is given in
the arrival of stage coaches in dry gulch follows a poisson distribution pronounced pisun by locals with an average
question an agricultural sprinkler distributes water in a circular pattern of radius 100 ft. it supplies water to a
find and attach a cross tabulation of data that is of interest to you. write a question for the following along with
What is the probability of drawing one or more aces after discarding 5, 7, 8, and 9
the thickness of manufactured metal plates is the variable of interest. due to many factors such as slight variations
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