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For a women ages 18-24 sytsolic pressure (in mm hg) are normally distributed with mean 114.8 and standard deviation 13. in a random sample of 32 womrn aged 18-24, find the probability that the average systolic blood pressure is between 110 and 120 mm hg.
In a random sample of 10 adults from a nearby county, the mean waste generated per person per day was 4.35 pounds and the standard deviation was 1.88 pounds.
If sales is the variable you are trying to explain and you have 2 independent variables of color and price. The color coefficient is 100, and the price coefficient is -200.
Can you please derive the mean and variance of a RV X, which has a Poisson distribution.
A random sample of 225 fathers from Littleton, yielded 97 who did not help with child care. Using a .05 level of significance test the claim that the proportion is at least 34%.
Find the strategy that maximizes the manufacturer's expected net earnings and Should the manufacturer routinely obtain credit rating reports on those retailers who seek credit approval? Why or why not?
What is the mean and standard deviation of the number preferring the incumbent and what is the probability that more than 68% will favor the incumbent?
How to explain the influences on z-scores with constant variables in hypothesis tests with
Assume that a 2005 poll of 1000 American voters found that 76% of Republicans favored ending the tax on dividend income, as did 42% of Democrats and 54% of Independents.
Pretests, posttests and threats to internal validity and please discuss all threats to internal validity.
The casino game craps is based on rolling two dice. Here is the assignment of probabilities to the sum of numbers on the up face when two dice are rolled:
Suppose you toss a die 100 times in a row. What is the probability that you see 4 spots between 10 and 20 times?
Assuming 250 of each sex, can we conclude that there is a significant difference in the proportions at a 0.05 level of significance?
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