A child development researcher is studying the time it takes five-year-olds to solve a certain puzzle. The researcher takes a random sample of 8 five-year-oldsand records the following times (in minutes) to solve the puzzle.3.1, 3.9, 3.4, 4.4, 2.7, 3.6, 4.8, 4.0Send data to calculatorSend data to Excel(a) Graph the normal quantile plot for the data. To help get the points on this plot, enter the data into the table in the correct order for a normal quantileplot. Then select "Compute" to see the corresponding area and z-score for each data value.RecheckIndex1234567Data value Area0000Try againZ-scoretxXSave For LaterSubmit A (a) Graph the normal quantile plot for the data. To help get the points on this plot, enter the data into the table in the correct order for a normal quantileplot. Then select "Compute" to see the corresponding area and z-score for each data value.Index12345678Data value07П111ComputeAreaZ-scoreX5

(a) The objective is to graph a normal quantile plot for the data.

Answered: A child development researcher is…

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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(2) Look at the dotplot of the data below: 200 400 600 800 1000 1200 CHOL a. Estimate (don't calculate) the mean. 1 MATH16 - ELEMENTARY STATISTICS WRITTEN HW #3 - SECTIONS 3.1 - 3.3 b. Would you expect the median to be less than / more than / or approximately equal to the mean? Explain your reasoning.
Emily walks every day, and she keeps a record of the number of miles she walks each day. The histogram and five-number summary below were created from the recorded miles for a random sample of 25 of the days Emily walked. Frequency 10 1 2 3 4 5 6 7 Miles Walked 8 Minimum Q1 Median Q3 Maximum 1.4 2.6 3.25 3.8 7.5 On one of the 25 days in the sample, Emily walked 7.5 miles. From the histogram, it appears that the value 7.5 might be an outlier relative to the other values. Two methods are proposed for identifying an outlier in a set of data. (a) One method for identifying an outlier is to use the interquartile range (IQR). An outlier is any number that is greater than the upper quartile by at least 1.5 times the IQR or less than the lower quartile by at least 1.5 times the IQR. Does such a method identify the value of 7.5 miles as an outlier for Emily's set of data? Justify your answer.
Consider the following data: −9,13,−14,−14,−9,−14,−9−9,13,−14,−14,−9,−14,−9 Copy Data Step 1 of 3 : Calculate the value of the sample variance. Round your answer to one decimal place. Answer How to enter your answer (opens in new window) Tables Keypad Keyboard Shortcuts Answer TutorSkip
The stem-and-leaf display represents scores achieved on a 100-point biology exam by the 32 members of the class. Identify the mean, median and mode for the data represented. The mean for the data is (Round to the nearest tenth.) ... D 4 5 6 3446677 7 0044 57779 80134 677 9 00447 7 057
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.
Here are the reading scores (out of 60) of 20 randomly selected kindergarten kids in a district 34, 26, 46, 46, 43, 42, 45, 39, 43, 32, 15, 36, 29, 39, 41, 27, 38, 58, 31, 35 Find the 5-number summary for the data set. Min: 15 Q1: OF 58 Find the IQR of the data set. IQR: 11.7 x Find Q3+1.5(IQR).! Q3+1.5(IQR) = 60.6 X Median: 38.5 38.5 Q3: 43 043 Max: 58 Are there any high outliers, that is, are there any numbers in the data set higher than Q3+1.5(IQR)? No, there are no high outliers ✓ OB Find Q₁-1.5(IQR). Q₁-1.5(IQR) Are there any low outliers, that is, are there any numbers in the data set higher than Q₁— 1.5(IQR)? No, there are no low outliers ✓ = 25.3 X
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Question The following dataset represents the number of times students have been late to their math class. 0, 0, 1, 0, 0, 2, 0, 1, 1, 0, 0, 0, 0, 3, 0, 0, 2 Suppose that the last value, 2, was mistakenly recorded as 20. What measure(s) of the typical value in a dataset would be affected by this error? Select all that apply. Select all that apply:
Teacher claims that the mean time required to complete a Test is two hours. A sample of 10 students took 1.7, 1.5, 2.6, 2.2, 2.4 2.3, 2.6, 3.0, 1.4 and 2.3 hours to complete the test. Test his claim to see if the mean time to complete the Test is different from two house. Use alpha = 0.05. Find p-value. State your hypothesis and your conclusion.
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A government agency computed the proportion of U.S. residents who lived in each of four geographic regions in a particular year. Then a simple random sample was drawn of 1000 people living in the United States in the current year. The following table presents the results. Region Past YearProportion ObservedCounts Northeast 0.171 150 Midwest 0.245 235 South 0.357 398 West 0.227 217 Send data to Excel Can you conclude that the proportions of people living in the various regions changed between the current year and the past year? Use the 0.05 level of significance and the P-value method with the TI-84 Plus calculator. What the P value?
ork Question Part 1 of 5 Cans of soda vary slightly in weight. Given below are the measured weights of seven cans, in pounds. Find the mean and median of these weights. Which, if any, of these weights would be considered an outlier? What are the mean and median weights if the outlier is excluded? 0.8161 0.8194 0.8165 0.8174 0.7903 0.8141 0.8127 Find the mean and median of the weights. The mean is (Round to five decimal places as needed.) P

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