(a) Find the percentile for Jackson, who reported owning 22 pairs of shoes. (b) Raul's reported number of pairs of shoes is at the 45th percentile of the distribution. Interpret this value. How many pairs of shoes does Raul own?
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- Pet Owners According to the Humane Society, in 2015, 65% of U.S. households owned at least one pet, and 42% of households who did own pets owned at least two. The U.S. Census Bureau tells us that there were 117 million households in 2015. How many households owned at least two pets? Report your answer in millions rounded to two places.A programmer plans to develop a new software system. In planning for the operating system that he will use, hee needs to estimate the percentage of computers that use a new operating system. How many computers must be surveryed in order to be 90% confident that his estimate is in error by no more than one percentage point. Complete part (a) through (c) below. a. n= b Assummer that a recent survey suggests that about 86% of computers use a new operating system. c. Does the additional survey information from part (b) have much of an effect on the sample size that is required?A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than five percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. Assume that a recent survey suggests that about 91% of computers use a new operating system.
- A busy grocery store in San Antonio captures the time per item it takes to check out customers during their peak time. (The total time for the customer was divided by the number of items for that customer. If a customer took 8 minutes, or 480 seconds, to check out and purchased 24 items, the time would be 20). A sample of times is calculated for each cashier. They want to compare 2 cashiers. The following are the average time per item scanned in seconds for each cashier: Cashier 1 Cashier 2 Time per Item Scanned Time per Item Scanned 20 24 10 16 52 19 60 55 65 45 58 36 40 5 38 29 40 52 25 45 35 15 40 19 35 28 27 28 15 30 16 28 18 19 Compare the following (a through k) for these two cashiers and then help the store determine which of the two cashiers has better metrics (explain why): Stem and Leaf, one for each cashier Line graphs that represent the number…A busy grocery store in San Antonio captures the time per item it takes to check out customers during their peak time. (The total time for the customer was divided by the number of items for that customer. If a customer took 8 minutes, or 480 seconds, to check out and purchased 24 items, the time would be 20). A sample of times is calculated for each cashier. They want to compare 2 cashiers. The following are the average time per item scanned in seconds for each cashier: Cashier 1 Cashier 2 Time per Item Scanned Time per Item Scanned 20 24 10 16 52 19 60 55 65 45 58 36 40 5 38 29 40 52 25 45 35 15 40 19 35 28 27 28 15 30 16 28 18 19 Compare the following (a through k) for these two cashiers and then help the store determine which of the two cashiers has better metrics (explain why): Cashier 1 Cashier 2 d. Q3 (or 75thPercentile…A busy grocery store in San Antonio captures the time per item it takes to check out customers during their peak time. (The total time for the customer was divided by the number of items for that customer. If a customer took 8 minutes, or 480 seconds, to check out and purchased 24 items, the time would be 20). A sample of times is calculated for each cashier. They want to compare 2 cashiers. The following are the average time per item scanned in seconds for each cashier: Cashier 1 Cashier 2 Time per Item Scanned Time per Item Scanned 20 24 10 16 52 19 60 55 65 45 58 36 40 5 38 29 40 52 25 45 35 15 40 19 35 28 27 28 15 30 16 28 18 19 Compare the following (a through k) for these two cashiers and then help the store determine which of the two cashiers has better metrics (explain why): Cashier 1 Cashier 2 a. Means b.…
- A busy grocery store in San Antonio captures the time per item it takes to check out customers during their peak time. (The total time for the customer was divided by the number of items for that customer. If a customer took 8 minutes, or 480 seconds, to check out and purchased 24 items, the time would be 20). A sample of times is calculated for each cashier. They want to compare 2 cashiers. The following are the average time per item scanned in seconds for each cashier: Cashier 1 Cashier 2 Time per Item Scanned Time per Item Scanned 20 24 10 16 52 19 60 55 65 45 58 36 40 5 38 29 40 52 25 45 35 15 40 19 35 28 27 28 15 30 16 28 18 19 Compare the following (a through k) for these two cashiers and then help the store determine which of the two cashiers has better metrics (explain why): Cashier 1 Cashier 2 a. Means b.…A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than five percentage points? Complete parts (a) through (c) below.A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than two percentage points? Complete parts (a) through (c) below.
- The number of people per movie theatre was calculated for the 94 departments from continental Metropolitan France). The following chart shows the results in tabulated form, where bin is measured in 1000s of people. (For example, there are 3 departments with between 0-10,000 people per theatre.) bin n (0,10] 3 (10,20] 17 (20,30] 35 (30,40] 25 (40,50] 8 (50,60] 5 (60,70] 1 How much flexibility did you have in choosing the bin-width? Explain briefly.A bag contain red and blue marbles. In a representative sample of 10 marbles, there are 5 blue marbels. If the bag has 180 marbles, estimate the number of blue marbles and red marbles in the bag.Fourteen different second-year medical students at a hospital measured the blood pressure of the same person. The systolic readings (mm Hg) are listed below. Use the given data to construct a boxplot and identify the 5-number summary.