he table gives some information about the delays (in minutes) of 80 flight Delay (n minutes) Frequency Cumulative frequency 10 - 19 16 16 20 - 29 26 42 30 - 39 23 40 - 49 10 75 50 50 80

The accompanying data are 45 commute times to work in minutes for workers of age 16 or older in Chicago. Construct a frequency distribution. Use a class width of 15 minutes and begin with a lower class limit of 0 minutes. Do the data amounts appear to have a normal distribution? Examine the data and identify anything appearing to be unique. Click the icon to view the commute times. ..... Construct the frequency distribution. Commute Time Frequency (minutes) 0- (Type whole numbers.) Do the data amounts appear to have a normal distribution? O A. No, because the frequencies start at a maximum and become low, and because the distribution is not symmetric. B. No, because while the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, the distribution is not symmetric. C. Yes, because the frequencies start low, proceed to one or two high frequencies, then decrease to a low frequency, and the distribution is approximately symmetric. D. No, because…

Which data set is exponential?     (0, 0.1), (1, 0.5), (2, 2.5), (3, 12.5)     (0, -1), (1, 0), (2, 7), (3, 20)     (0, -1), (1, 0.5), (2, 2), (3, 3.5)     (0, -1), (1, 2), (2, 11), (3, 26)

A study was done to look at the relationship between number of movies people watch at the theater each year and the number of books that they read each year. The results of the survey are shown below.   Movies 10 7 6 10 0 9 1 6 Books 0 0 -0 0 9 0 9 -0 Use the model to predict the number of books read per year for someone who watches 3 movies per year.Books per year =  (Please round your answer to the nearest whole number.)   Interpret the slope of the regression line in the context of the question:   The slope has no practical meaning since people cannot read a negative number of books. As x goes up, y goes down. For every additional movie that people watch each year, there tends to be an average decrease of 0.98 books read. Interpret the y-intercept in the context of the question: The y-intercept has no practical meaning for this study. If someone watches 0 movies per year, then that person will read 8 books this year. The best prediction for a person who doesn't watch…

Refer to the table summarizing service times (seconds) of dinners at a fast food restaurant. How many individuals are included in the summary? Is it possible to identify the exact values of all of the original service times? Time (sec) 60-119 120-179 180-239 240-299 300-359 individuals are included in the summary. (Type a whole number.) Is it possible to identify the exact values of all of the original service times? Frequency D 9 25 14 3 4 C O A. No. The frequency distribution tells nothing about the data values that fall below the lowest class limit or above the highest class limit. O B. No. The data values in each class could take on any value between the class limits, inclusive. O C. Yes. The data values in each class are spread evenly across the full length of the class. O D. Yes. The data values in each class are equal to the corresponding class midpoint.

24 -80 14. The table below represents the total points scored by the varsity basketball team for each of the 23 games played: 45, 50, 67, 72, 41, 62, 56, 59, 40, 60, 69, 47, 54, 76, 53, 64, 53, 57, 61, 64, 52, 56, 64 a. Complete the following table: Interval of Game Tally Frequency Scores Relative Frequency 40-50 50-60 60-70 70-80 b. Plot the histogram for the game scores (make sure label the axes) 10 9 8 7 6 5 A 3 2 1 40 50 60 70 80 Q Search 4 DOLL W

Ozone levels (in parts per billion, ppb) were recorded at sites in New Jersey monthly between 1926 and 1971. Here are boxplots of the data for each month The month of Ozone (ppb) 440- 400- The month of 360- 320- 280- 240 1 L TH OHH OHH a) In what month was the highest ozone level ever recorded? The highest ozone level ever was recorded in b) Which month has the largest IQR? c) Which month has the smallest range? • HIH • has the largest IQR. HOH O HH 2 3 4 5 6 7 8 9 Month has the smallest range. d) Write a brief comparison of the ozone levels in January and June. Choose the correct answer below. OA. The median ozone level in June was slightly lower than the median ozone level in January and the IQR was significantly smaller. OB. The median ozone level in June was slightly higher than the median ozone level in January, but the IQR was significantly smaller. OHH OC. The median ozone level in June was slightly lower than the median ozone level in January, but the IQR was significantly…

Two hundred and eighty boys completed a test that measures the distance that the subject can walk on a flat, hard surface in 6 minutes. For each age group shown in the table, the median distance walked by the boys in that age group is also given. Age Group 3-5 6-8 9-11 12-15 16-18 Representative Age (Midpoint of Age Group) 4 7 10 13.5 17 Median Six-Minute Walk Distance (meters) 543.3 583.0 667.3 702.1 726.6

If Study determines the difference an average salaries are so population of people with blue eyes and people with brown eyes is not significant than a population of blue are people in brown and people are ______ different salaries.

s Activity-Chapter 3 Math 2600 2. The data below shows the percent vaccinated (for the flu) by age group (6 months to 17 years, 18 to 49 years of age, 50 - 64 years of age, and 65 years of age or older) in the United States for last year up to Feb. 2018. Answer the questions below. Reference: https://www.cdc.gov/nchs/fastats/flu.htm Vaccinated Identify the who. People vaccinated for flu, b. Which age group has the greater a. 09 percentage of those who got a flu vaccine? 65 and older. 50+ C. Which age group has the lowest 45.2 percentage of those who got a flu vaccine? 18-49yr age group 31.8 d. Approximately 48.1 million Americans are 65 years old or older. According to this value, how many 65 and older Americans actually got the flu vaccine during this time 301 201 period? Just because the 65 and older category had the greater percentage, does that also mean the 65 and older group has the most 6 mos to 17 yrs 18 to 49 yrs 50 64 yrs 65 and older Age Group people getting vaccinated?…