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When a truckload of apples arrives at a packing plant, a random sample of 175 is selected and examined for bruises, discoloration and other defects. The whole truckload will be rejected if more than 3% of the sample is unsatisfactory. Suppose that 6% of the apples on the truck don't meet the desired standard. What is the approximately probability that the shipment will be accepted anyway?
a study of peach trees found that the average number of peaches per tree was 825. the standard deviation of the
Use the .05 significance level and the 5 step hypothesis testing process to check if there is a difference in the mean flight times among the three airlines.
what is the distribution of the case described here? mr. hr hits a homerun in his turn at a baseball game with 5 of
The winning team's scores in 9 high school basketball games were recorded. If the sample mean is 9.8 points and the sample standard deviation is 0.15 points, find the 98% confidence interval of the true mean.
Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour, and your city is the first stop on the tour.
Data shows the average GPA of students at a school is 2.9. The GPA of a random sample of 16 biology students is 3.1 (with sample standard deviation= 1.2)
a study is being planned to estimate the mean number of semseter hours taken by students at a college. the population
Determine a 95 % confidence interval for the iron concentration.
What is the probability that a randomly selected monthly cell phone bill is more than $100?
a quality control technician is checking the weights of a product. she takes a random sample of 8 units and weighs each
If the sample size is 36 with three treatment means (response variables) and you are performing an ANOVA, then the degrees of freedom for the error term will be:
The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.
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