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American Demographics reports that almost 75% of consumers like traditional ingredients such as nuts or caramel in their chocolate. A random sample of 200 consumers is selected and the number who like nuts or caramel in their chocolate is recorded.
1. What is the approximate sampling distribution for the sample proportion p? What are the mean and standard deviation for this distribution? Justify your answer.
2. What is the probability that the sample percentage is greater than 80%?
3. Within what limits would you expect the sample proportion to lie about 95% of the time?
Assuming that the hinge at A does not exert any axial thrust, determine the magnitude of the force exerted by the stick and the components of the reactions
A student wanted to study the ages of couples applying for marriage licenses in his county. He studied a sample of 94 marriage licenses and found
For the data in Exercise, what is the minimum number of observations that must be altered so that the 20% trimmed mean is greater than 1000?
Calculate the appropriate after-tax discount rate: tax rate on comparable risk investment: 35%; investor's before-tax opportunity cost:
He argues that the regression effort says people who perform very poorly in their previous job tend to perform well in their next job. Is this what the regression effect says? Explain.
what is the probability that each player will receive 3 picture cards?
Most sample surveys use random digit dialing equipment to call residential telephone numbers at random. The telephone- polling ?rm Zogby International reports that the probability that a call reaches a live person is 0.2.9 Calls are independent.
If she makes 8 attempts, what is the probability she will miss no more than twice? How do I figure out probability?
A researcher is interested in the effect of an electrolytic sports drink on the endurance of adolescent boys. A group of 30 boys is selected and half are given a treadmill endurance test while consuming the sports drink and the other half take the..
A buyer of electronic components has a lot tolerance proportion defective of 20 parts in 5,000, with a consumer's risk of 15 percent.
What is the probability of rolling a four in the gambling dice game of craps (given two six sided dice)? What is the probability that a player can roll a four 3 times in a row (assume that rolling the dice each time does not affect the outcome of..
Given that the first die shows a 3, what is the probability that S is an even number?
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