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- Find P(F | B) and P(E | A) using the tree diagram. (Round your answers to three decimal plac P(F | B) P(E | A)Find P(A | E) and P(C | F) using the tree diagram below. (Round your answers to four decimal places.) P(A | E) P(C | F)The table shows the weekly profits of a fruitvendor. What is the mean profit for these week
- Rest of the trading data on the second imageIf a researcher is interested in seeing if his group of students compares to the national average in terms of hours they study, which t-test design will he be using? -dependent (paired) samples t-test -one sample t-test -any t-test will work -independent samples t-testK:56) Somehow you manage to build a fair 3-sided die, equally likely to show 1, 2, or 3 every time it is rolled. You roll the die twice, with the results each time being independent. If X is the maximum of the 2 numbers rolled and Y is the sum of the 2 numbers rolled, find the correlation ρ(X, Y ).
- A survey of 185 public universities found that “the salaries and benefits of their presidents continued to rise, though at a slower rate than in years past.” Let ƒ(t) represent the total salary and compensation of the average public university president in year t. What does this statement tell us about ƒ(t), ƒ′(t), and ƒ″(t)? Source: The New York Times.Which of the following are true?A. At least a quarter of the data values in D2 are less than all of the data values in D3 .B. The median value for D1 is less than the median value for D3 .C. At least three quarters of the data values in D1 are less than all of the data values in D2 .D. The data in D3 is skewed right.E. Three quarters of the data values for D2 are greater than the median value for D1 .F. At least a quarter of the data values for D3 are less than the median value for D2 .Acid rain Based on long-term investigation, research-ers have suggested that the acidity (pH) of rainfall in the Shenandoah Mountains can be described by the Normalmodel N(4.9, 0.6).a) Draw and carefully label the model.b) What percent of storms produce rainfall with pHover 6?c) What percent of storms produce rainfall with pHunder 4?d) The lower the pH, the more acidic the rain. What isthe pH level for the most acidic 20% of all storms?e) What is the pH level for the least acidic 5% of allstorms?f) What is the IQR for the pH of rainfall?
- Classify each of the following as either quantitative or Qualitative (first blank) and either nominal, ordinal, interval or ratio (second blank): 1)The time an accountant spends at work during tax season. 2) The ordered preference that investors have for different types of investment funds. 3) The country where an individual is born. there are 2 for each one Plzz explainA special education teacher did research on whether or not there is a relationship between the number of students in his class and the number incidents of “acting out” behaviors exhibited by the autistic students in the classroom. He collects data for a year and aggregates them by month. He obtained the statistics below, r= -.863 R2=.74 b= -1.212294 a= 131.176598 10.) How does the presence of more students affect the incidents in the class? a) as students are added the incidences increase b) as students are added the incidences decrease c) the number of students does not affect acting out d) the number of students caused more incidents How much of the variability of acting out is explained by the number of students in the class?___________The data represent the age of world leaders on their day of inauguration. Find the five-number summary, and construct a boxplot for the data. Comment on the shape of the distribution. 694346424147476155554263454352 The five-number summary is _____, _____, _____, ______, ______
