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1) Due to normality, the formula for computing z is the same for a single data value, as it is for an average of the data values for a sample group. true or false?
2) One of the key concepts to solving applied problems, is to equate the area under the curve to probability of some event occurring. true or false?
3) A(n)-------- must be implemented, to convert an inherently discrete binomial distribution into the continuous curve of the normal distribution.
a.) Factor of 4
b.) Averaging factor
c.) Open ended distribution factor
d.) Continuity correction factor
At 5% level of significance, does this sample prove violation of guideline that average patient must pay no more than $250 out-of-pocket? Write your hypotheses and decision rule.
Develop a linear regression equation for the given data and forecast how much money Robert will win if he spends $30.
Find the probability that the age of a randomly selected CEO will satisfy each condition - The average teacher's salary in timbucktoo is $29,863. Assume a normal distribution with a standard deviation of $5000.
Using the .01 significance level you will test to conclude if the analyst finds evidence that the boast of dealership A is correct. What will be your critical value?
A shoe salesman want to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data?
A school only accepts students with the top 20% of sat scores. The sat has a mean of 500 and a standard deviation of 100. what actual score should be used as the cut-off score?
Discuss the assumptions of this model. Specifically, how does each variable affect demand? How do the variables influence each other? What limitations might this model have? How can it be improved?
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
Also, 77 percent of managers have MBA degrees. Using probability formulas, determine proportion of employees who either have MBAs or are managers.
Hypothesis test of difference between two means based on independent random samples, which one of the given is correct rejection region at significance level of .05?
a spinner is divided into 4 equal spaces. a player bets 2.00 on a given space. if the spinner lands on that space he is
a random sample of 100 pumpkins is obtained and the mean circumference is found to be 40.5 cm. assuming that the
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