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Suppose test scores for a test are uniformly distributed between 51 and 95. Let x=test scores. What is the probability a test score is at least 68?
Your office has just received 110 insurance claims to be processed in the next few days. What is the probability that fewer than 45 of the claims have been padded?
If μ represents the mean increase in the verbal SAT score if all high school students used the method, the alternative hypothesis the teacher wishes to test is what?
If the mean number of serious accidents per year in a large factory (where the number of employees remains constant) is five, find the probability that in the current year there will be:
a local drugstore owner knows that on average 100 people per hour stop by his store. find the probability that in a
At α = .05 in a left-sided test, find the β risk and power assuming that the true mean is really 380 square feet per gallon. (b) Construct a left-sided power curve, using increments of 5 square feet (400, 395, 390, 385, 380).
How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 0.04 with 98% confidence?
suppose a pitcher throws a fastball 80 of the time and a curveball 20 of the time. when its a fastball a home run is
The assembly time for a product is uniformly distributed between 6 to 10 minutes.
question what is a type i error? explain how the cumulative type i error affects your decision making. how are the two
for each of the following state the test statistic you would use for a hypothesis testz t f chi squaredx2 or unknown.a
for the xy data below computea r and determine if it is significantly different from zero.b the slope of the regression
Puret grinder has required repair service according to the following distribution. Compute the mean, for the following probability distribution of the number of breakdowns per week.
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