A Driver keeps goes through 3 intersections. The probabibilty of hitting a red light at each are 0.2, 0.4, and 0.4 respectively. What is the probabibility of hitting at least two red lights?

Q: An employee had accumulated 20 competency credits with the grade with B's, 10 credits with C's, and…

A: make a table as shown  grade grade points credits earned grade point×credit A 4 20 80 B 3 25…

Q: At the 2% level of significance, what is the decision?

A: Given : n1=10 , n2=10 , s1=22.4 , s2=12.0 , α=0.02 Our aim is to find the decision. Here , we use…

Q: 12. Jackson has scores of 80, 90, 83, and 81 on four Math quizzes. What is the score he needs on the…

A: Let us assume that the next score is x then

Q: find the mean for the number of correct answers

A: A multiple choice test with 17 questions, each question has four possible answers, one of which is…

Q: Illustrate the Test R2 for significance?

A: Coefficient of determination: The coefficient of determination (r2) is the percentage of total…

Q: An IQ score for which 15% of the population has a higher score and 85% have a lower score…

A:

Q: is also called as the Median. O a. Second quartile O b. First quartile O C. Lower quartile O d.…

A: We have given that  Median is middle value of the data and it is covered 50% of the data

Q: Frequency of Cases of CHD Rate per 10,000 Population Person Years of Risk Ratio Exercise Follow-up…

A: The Risk Ratio is the the ratio of probabilities of exposed to unexposed group with respect to a…

Q: Andrea conducted a survey in which she collected data on the percentage of people who like horror…

A: Pie chart: A pie chart is used to graphically display the whole population of categorical data into…

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A: Given; legal professions(n)=250 mean response=2.7 hours standard deviation(sd)=4.5 hours Estimated…

Q: i) Test, at the 3% level of significance, whether the proportion of adults who experience an adverse…

A: For sample 1, we have that the sample size is N1= 733 the number of favourable cases is X1= 103, so…

Q: In a crop of blueberries, there will be an average of 6500 berries with stdev = 318 %3D berries. The…

A: Given : Mean , μ= 6500 standard deviation, σ = 318

Q: Sarah is conducting a research only study in which one group of participants consume one cup of…

A: The study is about assessing attention levels of these participants.

Q: For a population with u = 80 and o = 10, what is the X value corresponding to z-score = - 2.00? Edit…

A:

Q: A salesperson purchased an automobile that was advertised as averaging 27 miles/gallon in the city…

A: Averaging in city = 27 miles per gallon. averaging on highway = 38 miles/gallon…

Q: Two HR managers ranked the 12 entries to hire executives for operations department of a hospital is…

A: We have given ranks by two HRs and we have to find how much they are agree or disagree with each…

Q: The sum of 20 observations is 300 and its sum of square is 5,000 and median is 15. Find its…

A:

Q: on a multiple choice test with 20 questions, each question has 4 possible answers, one of which is…

A: We have to find mean  for students who guess at all  correct answers..

Q: A student scored between 81% and 93% on all exams except for one that she failed with a 47% because…

A: Mean & Median : The mean of the data set is calculated by adding all observations in the data…

Q: Ten out of every 32 people surveyed play among use. What percent of people surveyed play among use

A: 31.25%   See the attachment

Q: The predicted college GPA for a high school GPA of 3.8 and a college board score of 500 is (Round to…

A: The equation of the college GPA is y^=0.16+0.51x1+0.002x2. The variable x1 is defined as the high…

Q: A cafeteria manager surveyed a random sample of students at a school to determine which of 2 meal…

A:

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: Given infromation:A sample of 125 light bulbs contained 3 defective…

Q: An engineer believes that by employing robots instead of humans for certain jobs in the…

A: Given : An engineer believes that by employing robots instead of humans for certain jobs in the…

Q: What is P(A and Y) ?

A: here use basic probability  Probability  = =no of favorable outcomes total outcomes

Q: Asurvey of 125 freshmen business students at a local university produced the results isted below.…

A: Here use venn diagram

Q: What is the value of ΣX2 for the scores 2, 4, and 5?

A: The scores are given as 2, 4, and 5.

Q: A researcher wants to create a histogram for the commute times of 69 GTA residents that have a…

A: In a histogram, bars of equal width are drawn. It has X-axis and Y-axis. On x-axis we have class…

Q: (a) What type of experimental design is​ this? Randomized block design Completely randomized…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Given Q3 = 13.01, median = 10.84, and Q1 = 5.06, what is the location of the upper fence for a…

A: Given,Q3=13.01Q2=median=10.84Q1=5.06

Q: The seniors in my math classes were asked about whether they would pay for either a senior trip or a…

A: The question is about categorical data analysis Given :   To test : A senior trip is more popular…

Q: The data shown in the boxplots shows monthly sales revenue figures ($ thousands) for a discount…

A: here given , three box plots of atlantic, central, and west respectively and IQR = third quartile -…

Q: how does ford or any other company (example of a company) use and inplement the x bar chart and the…

A: x¯ and R chart are quality control charts. Which are used to control the quality of the process.

Q: What would be the fair price to pay for a chance to draw a ball from the box?

A: The organizing committee of a high school reunion placed 150 balls inside a box. Ten of the balls…

Q: chology professor wants to know and gender. Test to see if a stude Psychology Nursing Other

A:

Q: The mean weight of 150 students in a class is 60 kg. The mean weight of boys in the class is 70 kg.…

A:

Q: Give three numbers whose mean is 8, mode is 6 and median is 10 and range is 8.

A:

Q: The number of passing and failing :students were as follows Number of Number of failing students…

A: Given data, Number of failing students=30 Number of passing students=70 Total number of students=100…

Q: Which of the 2 predictors, Gest or Weight, is a better predictor of Height?

A: Solution:

Q: Which player had the higher average points when compared to the other players on his team? O Fredo

A: Given information: The average points and standard deviations for the players Freda and Kari…

Q: A lecturer selected 300 students in the college and classified the results of Business Statistics…

A:

Q: Why is there more variation in the possible values of the studentized version of x¯than in the…

A: Because we are using s as an estimate of σ

Q: In California, we need more rain to sustain the health of our natural environment, argriculture, and…

A: Inches of Rain(x) frequency(f) f*x 1 4 4 2 3 6 3 0 0 4 7 28…

Q: For a survey that asks a group of people the amount of their income and whether they purchase…

A: A survey is conducted and people are asked about 'amount of their income' and 'whether they purchase…

Q: A national television channel posted the result of their web poll: 63 percent of Americans favor…

A: Given Data

Q: A bicycle manufacturer observes that the number of bike paths in a city affects the number of…

A: here take  x= no. of bike paths y= no. of bicycle sold here compute the regression line and then for…

Q: What is the table called?

A: A) It is called the Frequency table B)