Reference no: EM131008967
1. Side effects. Researchers testing a new medication find that 7% of users have side effects. To how many pa- tients would a doctor expect to prescribe the medication before finding the first one who has side effects?
2. Credit cards. College students are a major target for ad- vertisements for credit cards. At a university, 65% of students surveyed said they had opened a new credit card account within the past year. If that percentage is accurate, how many students would you expect to survey before finding one who had not opened a new account in the past year?
3. Missing pixels. A company that manufactures large LCD screens knows that not all pixels on their screen light, even if they spend great care when making them. In a sheet 6 ft by 10 ft (72 in. by 120 in.) that will be cut into smaller screens, they find an average of 4.7 blank pixels. They be- lieve that the occurrences of blank pixels are independent. Their warranty policy states that they will replace any screen sold that shows more than 2 blank pixels.
a) What is the mean number of blank pixels per square foot?
b) What is the standard deviation of blank pixels per square foot?
c) What is the probability that a 2 ft by 3 ft screen will have at least one defect?
d) What is the probability that a 2 ft by 3 ft screen will be replaced because it has too many defects?
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Find average rate of change of percentage of e-filed returns
: Find the average rate of change of the percentage of e-filed returns from 2000 to 2002. Find the average rate of change of the percentage of e-filed returns from 2004 to 2006.
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Problem regarding the hurricane insurance
: An insurance company needs to assess the risks associated with providing hurricane insurance. Between 1990 and 2006, Florida was hit by 22 tropical storms or hurricanes. If tropical storms and hurricanes are independent and the mean has not change..
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Find the effective range of the radar
: Application: Radar cross section. A radar is used for navigational purposes. A fixed radar station transmits at 3 GHz and 100 kW. If the smallest ocean-going ship has a radar cross section of 200 m2 and the radar antenna gain is 15 dB, find the e..
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Mean number of stops per hour
: a) What is the mean number of stops per hour? b) What is the standard deviation of stops per hour?
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Side effects-credit cards
: Researchers testing a new medication find that 7% of users have side effects. To how many pa- tients would a doctor expect to prescribe the medication before finding the first one who has side effects?
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Summarize bass leadership approaches
: Be sure to include the following in your essay: Summarize Bass' leadership approaches. Summarize the follower-focused leadership theories: servant leadership, authentic leadership, and leader member exchange (LMX)
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Calculate the maximum directivity of the antenna
: The two antennas are adjusted so that the direction of maximum directivity coincides with the line connecting them. Calculate the maximum directivity of the antenna.
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Analysts of a global management consulting
: 1. Consulting team, part 2. You are assigned to be part of a team of three analysts of a global management consulting company as described in Exercise 24. What is the probabil- ity that of your other two teammates:
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Find the current in antenna b when unit a transmits
: Two units communicate with each other at 120 MHz and 10 W, in free space. Unit A uses a half-wavelength dipole antenna placed as shown in Figure. Unit B uses a 1/100 wavelength long dipole antenna and is 10 km from the transmitting antenna as show..
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