The post-lunch dip is the drop in mental alertness after a midday meal. Does an extract of the leaves of the ginkgo tree reducethe post-lunch dip? Assign healthy people aged 18 to 40 years to take either ginkgo extract or a placebo pill. After lunch, askthem to read seven pages of random letters and place an X over every e. Count the number of misses per line read.M. K. Pawlik, "The effect of ginkgo biloba on the post-lunch dip and chemosensory function," MS thesis, Purdue University, 2002.What is a placebo and why was one group given a placebo?A placebo is a treatment pill that is presented to the individuals as a control treatment.A placebo is a lower-strength version of the pill that allows researchers to account for any physiological effect of takingthe pill.O A placebo is an inert pill that allows researchers to account for any psychological effect of taking the pill.A placebo is a different pill that allows researchers to account for any variational effect of taking the other pill.

In this case, healthy people aged 18 to 40 years take either gingko extract or a placebo pill.

Answered: The post-lunch dip is the drop in…

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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QUESTION 2 Elaine rolls a 20-sided die a total of 7 times. Her results are given below: Need undogh answe? watA Cines 20 5 18 8 7 6 20 a. What is the range? Explain your answer. range = explain: b. Determine the mean of Elaine's die rolls by using the formula for mean. Make sure to explain your answer or show your work. rea X = explain: c. Complete the table below. data value deviation deviation squared 20 8 64 20 8 64 18 6. 36 8 4 16 7 -5 25 6. -6 36 -7 49 Total: 290 d. Using your work from c., determine the sample standard deviation to the nearest hundredth. Explain your answer. S = 48.33 explain:
Do various occupational groups differ in their diets? A British study of this question compared 98 drivers and 83 conductors of London double-decker buses. The conductors' jobs require more physical activity. The article reporting the study gives the data as "Mean daily consumption (+ se)." Some of the study results appear below. Drivers Conductors Total calories 2821 44 2844 +48 Alcohol (grams) 0.24 0.06 0.39 ± 0.11 que Construct a 95% confidence interval for the mean daily alcohol consumption of London double-decker bus conductors. Follow the Inference Toolbox.
Primary data is O a. Always collected before secondary data O b. Usually collected through annual reports O c. Information that already exists o d. Collected for the specific purpose at hand
Determine whether the underlined value is a parameter or a statistic. a. In 2017 national survey on teenager pregnancies, 10% of respondents aged 14 to 17 reported that they have a child before the age of 16 yrs. ______________ b. Michael Jordan is one of the legendary basketball players has an average of 30.1 pts, 6.2 rebounds, and 5.3 assists in 1072 regular season games. ______________ c. A study of 1000 adults in public rest rooms (in Metro Manila) found that 30% did not wash their hands before exiting. ______________ d. Interview of 200 adults 18 years of age or older, conducted nationwide, found that 46% could state the minimum age required for the office of Philippine president. ______________
Create an excel file Construct a sheet that lets the user input 20 numbers, a number X, and another number Y. The value of X will determine the type of measure of position; 4 for Quartile 10 for Decile 100 for Percentile The value of Y will determine what Quartile, Decile or Percentile is to be computed. Example 1: If X is 10, and Y is 8, the output cell should show the 8th decile of the 20 input numbers. If X is 100, and Y is 52, the output cell should show the 52th percentile of the 20 input numbers. Label where the user should type the 20 inputs, X, Y. Highlight these cells. Also highlight the output cell. Use the values below in your submission: 100 50.3 1432 5.67 11 1032 11.22 69 243 93.7 7.902 4 875 2000 43.68 55 101.101 83 81 1.2345
The accompanying data represent the wait time (in minutes) for a random sample of 40 visitors to a popular attraction in a large amusement park. Use the sample data to complete parts (a) through (d). Click the icon to view the data for wait times. (Data table and histogram graphs attached)
During one shift, the express lane clerk recorded how many times customers violated the "10 items or less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items. Frequency 12+ 298 ans = 10- a 2 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 # items over 10 What is the frequency of times the limit was exceeded by at least 3 items?
Don't copy
pls answer G on paper
Don't use excel please
Please read the passage of the organic effect. And then, answer the questions carefullly to get the correct answers.
A high school teacher at a small private school assigns trigonometry practice problems to be worked on via the net. Students must use a password to access the problems, and the time of log-in and log-off is automatically recorded for the teacher. At the end of the week, the teacher examines the amount of time each student spent working on the assigned problems. The data is provided below in minutes. Determine Mean, Median and Mode. 15 28 25 48 22 43 49 34 22 33 27 25 22 20 39

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