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a. Using your own words, tell me what the difference is between a normal distribution and a standard normal distribution.
b. Why do we convert values to z scores to find probability?
2. What is the difference between z scores and area in a bell curve?
3. T / F The number associated with the area under the bell curve that falls to the left of the mean or center line is a negative value (read this carefully).
a coin is tossed 7 times. let a be the event that the first toss is heads. let b be the event that the fifth toss is
there are 1000 natural numbers a1 a2.... a1000. prove that of the numbers 3a1 3a2.... 3a1000 there must be 56 of them
If an auditor takes a random sample of 36 accounts what is the probability that the mean balance will be less than 45?
Do hotel managers on the average differ significantly in femininity score from men in general? Assume that the standard deviation of scores in the population of all male hotel managers is the same.
in a group of 200 students. 95 passed probability 85 passed geography and 30 passed neither. what is the probability
Superior Construction Pte Ltd is a successful company dealing with many major projects in Singapore. Recently, it has submitted its biddings for two major Government projects. Project A worth about $120 million and the company believes it has 40% ..
If the weekly average expenditure of all households is $53,000 but an expert argues that the weekly expenditure is more than $53,000, test his claim at a 5% level of significance and interpret your results.
let 18 and 10 be the standard deviations of the independent random variables x and y respectively.what is the standard
suppose a sample of 10 observations is taken from a population with a normal distribution. the sample mean is
for each of the following hypothetical populations give a plausible sample of size 4a all distances that might result
Write the regression equation approximately. Computed the coefficient of determination(r 2 ).
Assume that the regression equation for the relationship between SAT scores and IQ scores is y = 9 +.105x. What would you expect the IQ score to be for the following individuals, given their SAT scores? Individual SAT Score IQ Score Susan 850 Sall..
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