55) A consumer advocacy group tested the "on-air" lifetimes a random sample of 120 cell phone ba

First, let's address the question about the cell phone batteries. We are given a mean lifetime o

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55) A consumer advocacy group tested the "on-air" lifetimes a random sample of 120 cell phone batteries. The mean lifetime was 3.2 hours with a standard deviation of 0.1 hours. The lifetimes are approximately bell-shaped. Estimate the number of batteries with lifetimes between 3.0 hours and 3.4 hours. A) 82 B) 6 C) 114 D) almost all (greater than 114) 56) The average resident of Metro City produces 560 pounds of solid waste each year, and the standard deviation is approximately 80 pounds. Use Chebyshev's theorem to find the weight range that contains at least 75% of all residents' annual garbage weights. A) Between 240 and 880 pounds B) Between 400 and 720 pounds C) Between 320 and 800 pounds D) Between 480 and 640 pounds 57) A data set has a mean of 50 and a standard deviation of 10. Which of the following might possibly be true? A) No less than 30% of the data values are less than 30 or greater than 70. B) At least 15% of the data values are less than 20 or greater than 80. C) No more than 50% of the data values are between 30 and 70. D) At least 89% of the data values are between 20 and 80. 58) Gina and Stewart are surf-fishing on the Atlantic coast, where both bluefish and pompano are common catches. The mean length of a bluefish is 282 millimeters with a standard deviation of 59 mm. For pompano, the mean is 159 mm with a standard deviation of 31 mm. Stewart caught a bluefish that was 299 mm long, and Gina caught a pompano that was 162 mm long. Who caught the longer fish, relative to fish of the same species? A) Neither. Relative to its respective species, the fish are the same length. B) Gina C) Stewart 59) The average weekly earnings in dollars for various industries are listed below. Find the percentile rank of 662. 754, 662, 560, 684, 610, 711, 774, 500, 798, 819 A) 45th B) 40th C) 35th D) 25th

55) A consumer advocacy group tested the "on-air" lifetimes a random sample of 120 cell phone batteries. The mean lifetime was 3.2 hours with a standard deviation of 0.1 hours. The lifetimes are approximately bell-shaped. Estimate the number of batteries with lifetimes between 3.0 hours and 3.4 hours.
A) 82 B) 6
C) 114 D) almost all (greater than 114)

56) The average resident of Metro City produces 560 pounds of solid waste each year, and the standard deviation is approximately 80 pounds. Use Chebyshev's theorem to find the weight range that contains at least 75% of all residents' annual garbage weights.
A) Between 240 and 880 pounds B) Between 400 and 720 pounds
C) Between 320 and 800 pounds D) Between 480 and 640 pounds

57) A data set has a mean of 50 and a standard deviation of 10. Which of the following might possibly be true?
A) No less than 30% of the data values are less than 30 or greater than 70.
B) At least 15% of the data values are less than 20 or greater than 80.
C) No more than 50% of the data values are between 30 and 70.
D) At least 89% of the data values are between 20 and 80.

58) Gina and Stewart are surf-fishing on the Atlantic coast, where both bluefish and pompano are common catches. The mean length of a bluefish is 282 millimeters with a standard deviation of 59 mm. For pompano, the mean is 159 mm with a standard deviation of 31 mm.
Stewart caught a bluefish that was 299 mm long, and Gina caught a pompano that was 162 mm long. Who caught the longer fish, relative to fish of the same species?
A) Neither. Relative to its respective species, the fish are the same length.
B) Gina
C) Stewart

59) The average weekly earnings in dollars for various industries are listed below. Find the percentile rank of 662.
754, 662, 560, 684, 610, 711, 774, 500, 798, 819
A) 45th B) 40th C) 35th D) 25th

55) A consumer advocacy group tested the "on-air" lifetimes a random sample of 120 cell phone batteries. The mean lifetime was 3.2 hours with a standard deviation of 0.1 hours. The lifetimes are approximately bell-shaped. Estimate the number of batteries with lifetimes between 3.0 hours and 3.4 hours.
A) 82 B) 6
C) 114 D) almost all (greater than 114)

56) The average resident of Metro City produces 560 pounds of solid waste each year, and the standard deviation is approximately 80 pounds. Use Chebyshev's theorem to find the weight range that contains at least 75% of all residents' annual garbage weights.
A) Between 240 and 880 pounds B) Between 400 and 720 pounds
C) Between 320 and 800 pounds D) Between 480 and 640 pounds

57) A data set has a mean of 50 and a standard deviation of 10. Which of the following might possibly be true?
A) No less than 30% of the data values are less than 30 or greater than 70.
B) At least 15% of the data values are less than 20 or greater than 80.
C) No more than 50% of the data values are between 30 and 70.
D) At least 89% of the data values are between 20 and 80.

58) Gina and Stewart are surf-fishing on the Atlantic coast, where both bluefish and pompano are common catches. The mean length of a bluefish is 282 millimeters with a standard deviation of 59 mm. For pompano, the mean is 159 mm with a standard deviation of 31 mm.
Stewart caught a bluefish that was 299 mm long, and Gina caught a pompano that was 162 mm long. Who caught the longer fish, relative to fish of the same species?
A) Neither. Relative to its respective species, the fish are the same length.
B) Gina
C) Stewart

59) The average weekly earnings in dollars for various industries are listed below. Find the percentile rank of 662.
754, 662, 560, 684, 610, 711, 774, 500, 798, 819
A) 45th B) 40th C) 35th D) 25th

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