39.The cumulative frequency table below shows thelength of time that 30 students spent text messagingon a weekend.Minutes Used31-4031-5031-6031-7031-80CumulativeFrequency25101930Which 10-minute interval contains the firstquartile?1200laks1) 31-40ery miibim send à bas mumixe2) 41-503) 51-604) 61-70leases by 10

Minutes used Cumulative frequency 31-40 2 41-50 5 51-60 10 61-70 19 71-80 30

Answered: The cumulative frequency table below…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An intelligence test that has a maximum time for completion of 45 minutes was recently administered to a group of 21 people. Their respective times for completion (in minutes) were as follows. 22, 29, 31, 31, 31, 33, 36, 36, 37, 37, 37, 37, 37, 41, 41, 41, 42, 42, 43, 43, 44 Send data to calculator Send data to Excel Frequency 8. 8. 7 6- 4 4 2. 1 20 25 Time for completion (in minutes) 30 35 45 40
Left or right tail ? what test statistics? what is p.value
Please help.
The data set represents wait times (in minutes) for various services at a state's Department of Motor Vehicles locations. Which wait time represents the 50th percentile? How would you interpret this? 23 10 6 7 19 26 5 3 14 11 14 17 2 4 4 minutes (Type a whole number.) 1 7 27 6 6 4 6 10 8 Which wait time represents the 50th percentile? 2 9 4 4 10 3 14 20 26 16 15 18 3 18 21 4 20 1 19 3 10 3 13 3
Women stereotypically talk more than men do and researchers wondered how much more. Suppose a study attempted to determine the difference in the mean number of words spoken by men or women per day. The results of the study are summarized in the table. Group Populationmean Samplesize Samplemean Sample standarddeviation Standard errorestimate women ?w (unknown) ?w= 36 ?⎯⎯⎯w= 14704 ?w=6215 SEw=1036 men ?m (unknown) ?m= 24 ?⎯⎯⎯m= 15022 ?m=7864 SEm=1605 df=41.4224 Assume the conditions are satisfied for a two‑sample ?‑confidence interval. First, determine the positive critical value, ?, for a 95% confidence interval to estimate how many more words women speak each day on average compared to men, ?w−?m. Give your answer precise to at least three decimal places. Determine lower and upper limits of a 95% confidence interval for how many more words speak each day on average compared to men. A negative number would indicate how many fewer words women speak each day on average…
4
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A violin student records the number of hours they spend practicing during each of ten consecutive weeks. 2.5 3.5 3 2.4 What is the first quartile for this data? 3.6 7 8.1 5.4 7 4.1 8.6
Q个4 3 of 6 200% 5.) If the number 12.3 were added to the dataset below, which statement best describes how its mean and median would change? 70.1, 72.3, 75.6, 78.9, 81.0, 83.8, 84.5, 91.2 A.) The mean and median both decrease, but the mean decreases more. B.) The mean and median both decrease, but the median decreases more. C.) The median doesn't change, but the mean decreases. D.) The mean doesn't change, but the median decreases. 021 Illuminate EducationTM, Inc. ? XP OCa 29
14 2. The test scores, of 16 students are listed below: 44, 46, 51, 57, 60, 63, 65, 70, 75, 76, 85, 87, 90, 94, 95, 97. (b) Find the first quartile of the above data, 87 88.5 58.5 57
A researcher has 8 teenagers report the number of times they have left the house without their parents knowing. Scores ranged from 0 to 5. The scores were 3, 1, 2, 5, 3, 1, 3, 4. What is the percentile rank for X = 3: ____%? (RANK SCORES IN YOUR FREQUENCY TABLE FROM HIGHEST TO LOWEST) SHOW YOUR WORK (i.e., write out the columns of the table)!!! a. 62.5 b. 37.5 c. answer not listed d. 75
Please help with this asap

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