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We are in possession of two coins, one which is fairly balanced and turns up heads with probability 1/2, the other is weighted such that heads shows up with probability 3/4 and tails with probability 1/4. The two coins are identical looking and feeling so we cannot tell which is which. In order to determine which is the biased coin we toss the coin 10 times and observe the number of heads that occurred.
(a) If 7 heads were observed, what is the probability that the coin flipped was the fair coin?
(b) If 3 heads were observed, what is the probability that the coin flipped was the fair coin?
a. Determine the least-squares regression line and inter- pret its slope. b. Estimate, for a year during which 500,000 boats are sold, the number of boat trailers that would be sold. c. What reasons might explain why the number of boat trailers so..
Let X be the number of individuals in a simple random sample of size 50 from this population who get some relief by taking ibuprofen, and let pˆ be the sample proportion. Find the probability that the value of p is in the interval
Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
Suppose X1;::: ; X5 are independent U Œ0; 1] variables. Find the joint density of X.2/; X.3/; X.4/, and E.X.4/ C X.2/ - 2X.3//.
A study of 20 worldwide financial institutions shows the correlation between their assets and pretax profit to be .86. At the .05 significant levels, can we conclude that there is positive correlation in the population?
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Is the number of games won by a major league baseball team in a season related to the team's batting average? The information in the table, extracted from Sports Illustrated and Sporting News, shows the number of games won and the batting aver..
On average, C&C wash-down motors operate for 15,000 hours with a standard deviation of 1,250 hours before failing. The number of operating hours before failure is approximately normally distributed.
q1. dun amp bradstreet reports among other things information about new business incorporations and number of business
at issue is the proportion of people in a particular county who do not have health care insurance coverage. a simple
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