Estimatingh the percentile
What does it mean to say that your score on test one in statistics was in the 90th percentile? explain
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A bank has just made 200 car loans. The bank's records indicate that about 7% of their customers make late payments on their car loans. We will consider these 200 loans to be a random sample of all of their car loans.
The name of each contestant is written on a separate card, the cards are placed in a bag, and three names are picked from the bag. Identify which type of sampling is used and why?
A set of data is normally distributed with a mean of 200 and a standard deviatioon of 50. What would be the standard score for a score of 100?
A sample of 8 is to be picked from the box. In how many ways can a sample be selected so that at least 5 of the balls are red?
Compute the probability of being dealt, at random and without replacement, a 13-card bridge hand consisting of 13 cards of the same unit?
If Elyse and Jodi are roommates, what is the probability that parties for these two students are back to back?
A hand of 13 cards is dealt at random and without replacement from an ordinary deck of 52 playing cards. Find the conditional pr that there are at least three aces in the hand, given that there are at least two aces.
A surgical technique is performed on seven patients. You are told there is a 70% chance of success. Find the probability that the surgery is successful for exactly five patients.
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