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A random sample of size n is to be drawn from a population with mean = 700 and standard deviation = 300. What size sample would be necessary in order to ensure a standard error of 10?
according to usa today snapshot 3 of americans surveyed lie frequently. you conduct a survey of 500 college students
in a production process a product goes through one of the assembly lines a b or c and then goes through one of the
question a group of 11 people are going to the movies one saturday. adult tickets cost 10.50 each and child tickets
Estimate the probability the store will gross over $850 a) Fewer than 5 out of 10 business days.
Various temperature measurements are recorded at different times for a particular day. the mean of 20 degrees C is obtained for 40 temperatures on 40 different days. Assuming that the standard deviation = 1.5 degree C, test the claim that the populat..
question a survey shows that 74 of the indians like apples where 68 like orange. what percentage of the indians like
If 2 randomly chosen students are surveyed and both feel optimistic about their employment prospects, what is the probability that both were math students?
Find a 90% confidence interval for the population mean salary of such personnel. What is the margin of error.
post cereals has decided to run a promotion whereby they are putting 10 different yu-gi-oh cards in specially marked
What is the estimated increase in the interval of time until the next wruption that corresponds to an increase of 60 seconds in the duration?
Suppose you estimate a regression model to predict weekly expenditures on food per person. Would you be pleased if your model estimate a Standard Error =$300 EXPLAIN?
show that if x and y are independent then e x y y e x for all y a in the discrete case b in the continuous
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