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The mean value of land and buildings per acre from a sample of farms is ?$1200?, with a standard deviation of ?$100. The data set has a? bell-shaped distribution. Assume the number of farms in the sample is 71.
?(a) Use the empirical rule to estimate the number of farms whose land and building values per acre are between ?$1100 and ?$1300.
______farms ?(Round to the nearest whole number as? needed.)
?(b) If 30 additional farms were? sampled, about how many of these additional farms would you expect to have land and building values between ?$1100 per acre and ?$1300 per? acre?
_______farms out of 30 ?(Round to the nearest whole number as? needed.)
You survey first-year students and obtain the counts 79, 83, 36, and 12, respectively. Use a goodness-of-fit test to examine how well your university reflects the national average.
And a standard deviation of 10 inches. What is the probability that the mean annual precipitation during 25 randomly Picked years will be less than 109.8 inches?
Calculate the standard error of the sample mean - Compared to our original sample size of n = 30, what happens to the distribution of the sample mean?
Many companies offer customers various discounts from their normal or list price to entice them to buy. Discuss the main types of discounts offered.
i. Analyze→General Linear Model→Univariate ii. Move your dependent measure into the Dependent Variable window. iii. Move your independent variables into the Fixed Factor(s) window.
In a shipment of 20,000 items, 400 are defective. These are scattered randomly throughout the entire lot. Assume the probability of a defective is the same.
the mean weight of penguins last year was 15.4 kg. in a random sample of 35 penguins the standard deviation of the
In order to receive full credit on calculated answers, please show your work. (Use Word's equation editor, etc., and/or provide a short written description as to how you obtained the final result.)
What is the cross rate between the yen and the peso; that is, how many yen would you receive for every peso exchanged?
When a researcher has two samples with two means, one of the assumptions for two samples is independence of between the two samples. What does this mean? What happens if the independence assumption is violated?
Suppose that X is a uniform random variable where X is between 0 and 10. What is the probability that X will be between 0 and 3?
assume you are employed by a consumer-products rating service and your assignment is to assess car batteries. for this
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