Researchers watched groups of dolphins to determine what activities the dolphins partake in at certain timesof the day. The numbers in the table represent the number of groups of dolphins that were partaking in anactivity at certain times of days. Is there enough evidence to show that the activity and the time period aredependent for dolphins? Test at the 5% level.Dolphin ActivityPeriodActivity Morning Noon Afternoon Evening TotalTravel19131415 61Feed201454 118Social151352 109Total784841121 288State the hypotheses.Ho: Activity and the time period areSelect an answerHa: Activity and the time period areSelect an answerCalculate the test statistic. Round your answer to three decimal places.x² =Calculate the p-value. Round your answer to four decimal places.p-value=State your decision.Since p-value? 0.05, Select an answer Ho.Interpret your decision in the context of the problem.At the 5% level of significance, there Select an answer enough evidence to show that activity and the timeperiod are Select an answer.Submit Question%^&56723029#3S4$* ∞

Given: Activity Morning Noon Afternoon Evening Total Travel 19 13 14 15 61 Feed 30 20 14 54…

Answered: Researchers watched groups of dolphins…

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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The weights (in pounds) of 19 preschool children are 43, 25, 22, 39, 35, 42, 37, 21, 40, 48, 23, 20, 29, 46, 50, 27, 41, 36, 49 Find 20th and 75th percentiles for these weights. (a) The 20th percentile: pounds (b) The 75th percentile: pounds
Among the first-year resident students, eight students were randomly selected, and their body weights were measured at the beginning and the end of the semester. The data obtained are as follows. Whether the table can be considered to be below the significant level of 5%, the first-year freshman is living on campus because of the reasons. Is there a significant difference in average body weight?
given data: 2.1, 2.8, 3.7, 4.1, 4.6, 5.8, 6.3, 7.4, 8.2, 8.5, 9.6, 10.1, 10.3, 10.9, 11.0, 11.8, 12.4, 13.6, 13.9, 14.3, 14.6, 15.5, 15.9, 16.7, 16.9 Can someone help me with this series of questions please... 5a) Calculate the percentile of the data value 7.4. b) What value represents the 65th percentile? c) What does it mean for a data value to be in the 65th percentile?
The number of traffic violations recorded by a police department for 10 days is shown. Find the percentile rank for 20.25 18 19 12 22 24 20 16 15 9
Empathy among police officers influences how they interact with citizens and the likelihood that they receive complaints. Gender differences in levels of empathy in the general population are not large but male and female officers have been shown to have different interaction styles with the public; this may be due to the different empathy levels. After sampling officers and measuring their levels of empathy you find the following data. Males Females n = 6 n = 9 M = 31 M = 45 SS = 490 SS = 680 If you were going to make gender comparisons like this, which option would be the correct choice? Write A or B in the box. Option A. Independent-measures t test Option B. Repeated-measures t test Based on these results, is there a significant difference between the attitudes for males and for females? Use a two-tailed test with = .05. (Use 3 decimal places.) t-critical = ± t = What is your conclusion? Write A, B, C, or D in the box. Option A. Reject the…
In the class poll from the beginning of the year, you were asked what color car you drive. The results are summarized below. aqua 3 beige/tan/gold 39 black 80 blue 44 green 21 orange 3 pink 1 purple 3 red 45 silver 63 white 74 yellow 1 What is the mode for this data set?
Recherchers conducted two surveys about teens are their use of social media. The First survey asked a Random sample of 800 U.S. teens about their use of Instagram. A second survey asked the same question to a Random sample of 2253 Canadian teens. In these two studies. 73% of U.S. teens and 88% of Canadian teens said that they use instagram. Use these results to answee the following questions about the proportion of U.S. and Canadian teens that use instagram. (Round to the nearest whole hundredth as needed).
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Their body fat percentage scores were 20.3, 29.6, 32.4, 35.7, 28.4, 21.4, 26.6, 30.5, 23.4, 11.8, 21.3, 19.2, 19.4, 23.2, 7.2, 40.4, 27.8, 35.3, 40.5, and 43.6. What is the percentile rank of the person whose body fat percentage is (a) 35.3%; (b) 11.8%? Hint: Be sure to sort the scores from high to low (highest BMI at the top).
Empathy among police officers influences how they interact with citizens and the likelihood that they receive complaints. Gender differences in levels of empathy in the general population are not large but male and female officers have been shown to have different interaction styles with the public; this may be due to the different empathy levels. After sampling officers and measuring their levels of empathy you find the following data. Males Females n = 6 n = 9 M = 31 M = 45 SS = 490 SS = 680 If you were going to make gender comparisons like this, which option would be the correct choice? Write A or B in the box. [a] Option A. Independent-measures t-test Option B. Repeated-measures t-test
Find the mode for the scores in the following frequency distribution table: Number Frequency Cumulative Frequency 16 15 15 10 13 9 12 7 11 4
South Dakota prices vary $350,000: $400,000:$400,000:$425,000:$429,000: $440,000: $560,000: $585,000,: $585,000: $785,000 : $1,300,000. We found the following Mean = 569000 SD = 272703.1353 T score = .7113 P Value = .4932 We failed to reject the hypothesis. What is a 95% confidence interval and how would you create one for the population average price? What would it look like. How does this related to Central limit therorem? If you had a margin of error of $13,000 how large of sample would you need with a 90% confidence interval using the given tscore.

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