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The population proportion is .30. What is the probability that a sample proportion will be within ±.04 of the population proportion for each of the following sample sizes?
a) n = 100
b) n = 200
c) n = 500
d) n = 1000
e) What is the advantage of a larger sample size?
a client gives you a data set of 30 observed values that represent the number of gallons of gas that 30 individual
Use normal disrtibution of fish lengths for which the mean is 8 inches and the standard deviation is 5 inches. Assume the variable x is normally distributed.
How do you set up SPSS to find descriptives for the perceived learning variable for each gender?
twenty percent of all cars manufactured by a certain company have a defective transmission system. if a dealer has sold
The number of newspapers sold daily at a kiosk is normally distributed with a mean of 300 and a standard deviation of 30. Calculate the probability that less than 250 newspapers are sold on a particular day.
Estimating the sample standard deviation using normal score - Find the sample standard deviation?
y -8 -4xa. find the y-intercept and slopeb. determine weather the line slopes upward slopes downward or is horizontal
suppose that since the early 1950s some ten-thousand independent ufo sightings have been reported to civil
Nationwide, the average time until a electric utility customer service representative answers a call is 260 second. The Gigantic Kilowatt Energy Company randomly sampled 30 calls and found that, on average, they were answered in 227 second with a ..
The statewide incidence of gonorrhea is 50 per 100,000 over a 3 month period. Is the number of gonorrhea cases in this county unusual for this time period?
A library checks out an average of 250 books per day, with a standard deviation of 75 books. If a sample of 36 days of operation is selected and the sample mean is computed,
Mean of $32,000 and a standad deviation of $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
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