18. Suppose that the distribution of scores on the Graduate Record Exam (GRE) is approximately normal, with a mean of µ = 150 and a standard deviation of o = 5. For the population of students who have taken the GRE: a. What proportion have GRE scores less than 145? b. What proportion have GRE scores greater than 157? c. What is the minimum GRE score needed to be in the highest 20% of the population? d. If a graduate school accepts only students from the top 10% of the GRE distribution, what is the mini- mum GRE score needed to be accepted?

Q: summary of the data. Be sure to include the screenshot of excel of your answers and formulas/command…

A: The given dataset about a sample of 105 parking infrastructures in Toronto, Ontario, Canada, for…

Q: Write 5 data points with a median of 15 and a mode of 13. Show how you found your work

A:

Q: The r code for side by side boxplot of vitamind v newage and vitamin d v country. Scatterplot code…

A: The data frame is named "Data" and the variables in it are Country, Sun_Exposure, Gender, NewAge,…

Q: Name two kinds of statistical data and describe them in brief.

A:

Q: (a) Go to www.lock5stat.com/datapage2e.html (b) Download and save the .csv file of the dataset…

A: Go to www.lock5stat,com/datapage2e.html Download and save the .csv file of the dataset called…

Q: The number of students in a classroom would be considered which type of data.

A: It is needed to find the type of data for the number of students in a classroom.

Q: Give definition of Cross-Sectional Data?

A: Cross-sectional data is a type of data that is gathered by analyzing the various subjects like…

Q: Define the term indicating variable?

A: Definition : Indicating variables are also called as dummy variables. They takes only binary values…

Q: Illustrate Interpret significant and non-significant differences?

A: If the p-value is below the provided level of significance, than the null hypothesis would rejected…

Q: Describe about the negatively skewed shape of histogram.

A: The histogram is said to be left-skewed or negatively skewed when the histogram has a long-left…

Q: Give the answer for each calculator to the correct number of significant figures.   12.6 x 0.53…

A: 1.  The objective is to calculate 12.6×0.53 Now, 12.6×0.53=12610×53100=126×531000=66781000=6.678

Q: List the following in decreasing order. 9 cm, 5073 mm, 235 cm, 92 mm, 6 m, 400 mm

A: See attached file for a step by step explanation to find the required decreasing order.

Q: Which region or regions showed difference in the average money spent during visit by region.

A: The Tukey HSD results show that there is a significant difference in the average money spent during…

Q: Suppose you have information about average heights of a random sample of airline passengers. The…

A:

Q: Last summer, the Smith family drove through seven different states and visited various popular…

A: Solution Given that price of gasoline in $ 2.34, 2.75, 2.48,3.58, 2.87, 2.53, 3.31

Q: 3. Explain the difference between patch A and patch B in the figure below. What does this difference…

A: This question is about the differences between Patch A and Patch B as seen from the overview below.…

Q: can a cause and effect relationship be determined?

A: to see if there is a cause and effect relationship between the valence of R&B and Rap songs.…

Q: Twenty-nine fast-food restaurant hourly employees were surveyed to see how many hours they worked…

A:

Q: How to interpret scatterplots Positive, Negative, or little or No Relationship?

A:

Q: Determine whether the data are qualitative or quantitative. the colors of automobiles on a used car…

A: Given,   The colors of automobiles on a used car lot.

Q: Which one measure of variation would you report for the variable SEX (1=male, 2=female )

A: Variance is a single statistic that measures the spread or variation of a data set.

Q: Mang Carlo harvested the fruits in his farm. He have harvested 250 pieces of mangoes, 50 pieces of…

A: Data table:  Fruit Frequency Mangoes 250 Papaya 50 Banana 300 Apples 200 Oranges 150

Q: Draw a histogram for the data. Use a class width of 15. Be sure to include the screenshot of Excel…

A: Given that class width is 15. Arrange the data in ascending order since the lowest value is 15.…

Q: Explain why the vertical-line test works.

A: Vertical line test: The vertical line test can be used to determine whether a graph represents a…

Q: How to determine the number of observation in the model?

A: We are given the output of a multiple model predicting car mileage per gallon (mpg) as a function of…

Q: ull hypothesis:

A:

Q: For qualitative data, the mode is the best measure of center. True

A: Given data: For qualitative data, the mode is the best measure of center. Answer: True or false

Q: Discribe a specific time in real life where a population being surveyed is appropriate. What data…

A: Sampling is a technique employed in selecting data for inferential statistical procedures.

Q: 58 57 61 59 59 64 63 56 55 59 54 59 62 78 Find the first,second and third quartile.

A: Solution

Q: Make a histogram of hrs/week of exercise. Be sure the title reads Exercise and the x-axis label is…

A: A data can be raw or grouped, with some pro and cons associated with both of them. The raw data has…

Q: n the data set 2,8,10,85,12,7,5,3,10,3,9,4,9, find the 3rd decile

A: Total data values = 13 Data in ascending order corresponding to the position is written as follows:…

Q: Use one example to explain why the level of measurement is the first thing needed to know in data…

A: The level of measurement is the first thing needed to know in data analysis. Examples are given…

Q: Explain why there is a need to present results/data through graphs and tables.

A: Tabulation is the process of condensing the classified data that helps in easy understanding and…

Q: 2. Find the median and mode of the following data: Trees 1 2 3 4 5 6 Frequency 2 5 6 4 1 8

A: Median and Mode: The mid element in a classified array of numbers is termed the median. By arranging…

Q: Travis is testing how far he can throw a baseball to prepare himself for the season. He makes 1616…

A: The histogram is a graphical display of data using the bars of different heights.It is used…

Q: A researcher collected information about the height of  different flowers. What type of data is…

A: Ratio scale: It contains absolute zero point in the values. In this scale, ratio of the numbers is…

Q: ?

A:

Q: Describe about the positively skewed shape of histogram.

A:

Q: Determine the type of variation model that best fits the data in the attached image.

A: Enter the given table values in Excel and use the trend lines option to get the best fit as shown…

Q: Cueston Heip Use the magnitudes, rounded to two decimal places, of the 100 earthquakes included in…

A: The given information is that the 100 earthquakes magnitudes and the class width is 0.50.

Q: The basketball coach at a local college believes that his team scores more points at home games when…

A: State the hypotheses.   Use EXCEL to obtain the value correlation coefficient r:   EXCEL procedure:…

Q: The data colectes from 8 men & the calculations asking

A: Female Time ins seconds (X-M) (X-M)^2 Brian 25 10.375 107.6406 Yon 15 0.375 0.140625 Yerson…

Q: Briefly explain the procedure you may adopt to summarize data set obtained from field study.

A: To summarize a dataset from a field study effectively, it's essential to follow a systematic process…

Q: Describe the similarities and differences between a research proposal and a research report.

A:

Q: A box and whisker plots show what data?

A: Box plot have Minimum, Q1, median value, Q3,Maximum of data and shows some outliers if dataset have.…