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The weights of Granny Smith apples from a large orchard are Normally distributed with a mean of 380 gm and a standard deviation of 28 gm. Three apples are selected at random from this orchard. What is the probability that their mean weight is under 340 gm?
We cannot say because the condition for randomness, independence, or normality is not met.
The number of customers who have requested a reservation at full fare for this flight in the past always has a normal distribution with mean 40 and standard deviation 10. Determine how many seats should be reserved for customers who pay full fare.
Establish at the 5% level of significance whether there is any significant difference in the average month-end credit card balances between Mastercard and Visa card clients.
There are 8 members on the board of directors. If the board must form a committee of 6 members, how many different ways may the committee be selected from among the 8 board members?
How many different 6-letter code words can be formed from the first 8 letters of the alphabet if adjacent letters must be different?
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcoxon rank sum test, evaluate the significance of the results, assuming there are no ties.
wetland ecologists often recommend including an island in the middle of wetlands to increase the retention time during
where 1 = smooth-yellow, 2 = smooth-green, 3 = wrinkled-yellow, and 4 = wrinkled-green. Can the measures of variation be obtained for these values? Do the results make sense?
Faced with rising fax costs, a firm issued a guideline those transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below.
the manufacturer of hardness testing equipment uses steel-ball indenters to penetrate metal that is being tested.
Let α=0.05. What is your decision regarding the hypothesis? Write your conclusion in a sentence and discuss whether there is sufficient data to support your decision.
Lab technicians at a major mdical lab can process an average of 400 blood samples a day with a standard deviation of 50 samples. The processing follows a normal distribution.
The random variable x is known to be uniformly distributed between 1.0 and 1.5.
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