Elementary Statistics: Picturing the World (7th Edition)
7th Edition
ISBN: 9780134683416
Author: Ron Larson, Betsy Farber
Publisher: PEARSON
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Textbook Question
Chapter 2.5, Problem 51E
Comparing z-Scores from Different Data Sets The table shows population statistics for the ages of Best Actor and Best Supporting Actor winners at the Academy Awards from 1929 to 2016. The distributions of the ages are approximately bell-shaped. In Exercises 51–54, compare the z-scores for the actors.
| Best actor | Best supporting actor |
| μ ≈ 43.7 yr | μ ≈ 50.4 yr |
| σ ≈ 8.7 yr | σ ≈ 13.8 yr |
51. Best Actor 1984: Robert Duvall, Age: 53
Best Supporting Actor 1984: Jack Nicholson, Age: 46
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Chapter 2 Solutions
Elementary Statistics: Picturing the World (7th Edition)
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- MORTALITY RATE Table 3.5 provides the number of deaths from all causes and from accidents (unintentional injuries) by age group in the United States in 2002. Review the following rates. Determine what to call each one, then calculate it using the data provided in Table. 1. Unintentional-injury-specific mortality rate for the entire population. Calculate cause-specific mortality rate. 2. All-cause mortality rate for 25-34 years old. Calculate the age-specific mortality rate. 3. All-cause mortality among males. Calculate the sex-specific mortality rate. 4. Unintentional-injury specific mortality among 25 to 34 years old males. Calculate the is a cause-specific, age-specific, and sex-specific mortality rate Table 3.5 All-Cause and Unintentional Injury Mortality and Estimated Population by Age Group, For Both Sexes and For Males Alone- United States, 2002 All Races, Both Sexes All Races, Males Age group (years) All Causes Unintentional Estimated All Unintentional Estimated Injuries Pop. (x…arrow_forwardThe period of increased risk following the exposure is referred to as which of the following? Group of answer choices Latent period Hazard period Critical period Induction periodarrow_forwardCan a low barometer reading be used to predict maximum wind speed of an approaching tropical cyclone? For a random sample of tropical cyclones, let x be the lowest pressure (in millibars) as a cyclone approaches, and let y be the maximum wind speed (in miles per hour) of the cyclone. X 1004 975 992 65 935 145 979 920 154 y 40 100 82 A USE SALT (a) Make a scatter diagram of the data and visualize the line you think best fits the data. 160. & 140 120 100 80 60 40 E 920 940 960 980 1000 x (lowest pressure (in millibars)) 160 140 120 100 80 60 40e 920 940 960 980 1000 x (lowest pressure (in millibars)) 1000 980 960 940 920 40 60 80 100 120 140 x (lowest pressure (in millibars)) * 1000 980 960 940 920 40 60 80 100 120 140 x (lowest pressure (in millibars)) (b) Would you say the correlation is low, moderate, or strong? O low O moderate O strong wind speed (in miles per hour) y (maximum wind speed (in miles per hour) ((anoy Jad saru ut) paads putM unupxeur)arrow_forward
- of This frequency table depicts the average hours spent on social media use for students in PSY201 class. Hours Frequency 4 3.5 3 2.5 2 1.5 1 0.5 0 10 5 5 3 7 16 0 5 3 How many students spent at least 3 hours on social media in PSY201?arrow_forwardhow do you determine part e?arrow_forwardAnswer only the part b and part c.arrow_forward
- PLEASE USE EXCEL IN SOLVING AND SCREENSHOT THE SOLUTION.arrow_forwardSpeed cameras (SC) are used to reduce the risk of accidents in accident-prone zones in metropolitan cities. To study the effectiveness of speed cameras, transport engineers would like to compare the average number of accidents in junction A (with SC) and junction B (without SC). The number of accidents in 105 weeks in two junctions are provided below. 6 7+ Number of Accidents 0 1 2 3 4 5 Observed frequency 40 20 15 16 10 3 1 0 Number of Accidents 0 1 2 3 4 5 6 7+ Junction B without SC Observed frequency 25 24 18 15 18 41 0 Junction A with SC Test the average number of accidents per week in junctions A and B are same at the 5% significance level.arrow_forwardData was collected for a sample of organic snacks. The amount of sugar (in mg) in each snack is summarized in the histogram below. Which statement best describes the meaning of one of the bars in the histogram? Frequency 14 12 10 8 140 150 160 170 180 190 200 210 amount of sugar (mg) The largest number of snacks have 14 mg of sugar 3 snacks have about 145 mg of sugar. 145 snacks have between 140 and 150 mg of sugar. O 145 snacks have 3 mg of sugar.arrow_forward
- 2.) Explain why the relative frequency column of a frequency table might not sum to 1.0.arrow_forward29 22 37 44 55 42 47 42 32 46 53 calculate The 65th percentile. Show all working outsarrow_forwardThe data in the table is the number of absences for 7 students and their corresponding grade. Number of Absences Grade0 5.51 52 4.53 3.55 37 2.58 2 Step 2 of 3: Determine if r is statistically significant at the 0.01 level.arrow_forward
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