tyneshiajones124
27.04.2021 •
Mathematics
What are travelers’ technologies of choice? Tablets ac- count for a growing share of the multiuse device travelers are using. An observational study of passengers on air, bus, and train travel found that 8.4% of airline passengers, 5.9% of Amtrak passengers, 4.9% of commuter train passengers, and 3.7% of curb- side bus passengers were observed using a tablet at some point during their travel. Suppose these results were based on 500 passengers in each of the four transportation modes: airline, Amtrak train, commuter train, and curbside bus.
a. Based on the given information, complete the following observed frequencies.
Observed Frequencies
Transportation Mode
Use of Tablet
Air
Amtrak
Commuter
Bus
Total
Yes
No
Total
500
500
500500
2000
b. At the 0.05 level of significance, is there evidence of a difference among the transportation modes with respect to use of tablets?
c. If appropriate, use the Marascuilo procedure and α = 0.05 to determine which transportation modes differ.
Solved
Show answers
More tips
- H Health and Medicine How Much Does Abortion Cost? Expert Answers and Insights...
- S Sport How to Build Arm Muscles? Effective Exercises and Tips...
- H Health and Medicine When can it be said that a person has a normal pulse?...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
Answers on questions: Mathematics
- M Mathematics The spinner is equally likely to land on any of the six sections. what is the probability that the spinner will land on a number greater than 4 or on a shaded section? 2/91/22/35/6...
- M Mathematics How many seconds are in 9 h? a. 400 s b. 540 s c. 32,400 s d. 64,800 s...
- M Mathematics The equation of line wx is y = −2x − 5. write an equation of a line perpendicular to line wx in slope-intercept form that contains point (−1, −2)....
- M Mathematics 4x - 16y = 32 the slope of the equation is...
- M Mathematics Convert 7.2 ⋅ 10–3 to standard form. 72,000 7,200 0.0072 0.00072...
- M Mathematics You are wallpapering a wall 10 feet wide and 12 feet high with a square window with 3 foot sides. how many square feet of wallpaper do you need to cover the wall?...
- M Mathematics The border between the united states and canada is 8963 km long. the total length of the great wall of china, including it s branches, is 6324 km. how much longer than the great wall...
- M Mathematics Peggy bought an atv for 6200 dollars and sold it for 7130. peggy sold the atv for what percent of increase...
- M Mathematics Answer a and b and give an explanation and show work. you!...
- M Mathematics Write the equation of the following graph in vertex form. 1) f(x) -0.4 (x + 2)(x - 5) 2) f(x) 0.4 (x + 2)(x - 5) 3) f(x) -0.4 (x - 2)(x + 5) 4) f(x) 0.4 (x - 2)(x + 5)...
Ответ:
Afternoon class has more students.
Step-by-step explanation:
Let m be the number of students in the morning class and n be the number of students in the afternoon class.
The average score for the students in the morning class was 80, then the sum of their scores is
The average score for the students in the afternoon class was 86, then the sum of their scores is
The sum of the scores of both classes is
and the average score is
The average (arithmetic mean) score for the two classes combined was 84, then
This means n is greater, so afternoon class has more students.