Write your complete solutions. The final test and exam averages for 20 randomly selected students taking a course in engineering statistics and a course in operations research are in the table below. Assume that the final averages are jointly normally distributed. d) Test the hypothesis that p = 0, using a = 0.05. e) Test the hypothesis that p = 0.5, using a = 0.05. equations on this slide to answer the question) f) Construct a 95% confidence interval for the correlation coefficient. Statistics OR Statistics OR Statistics OR 86 80 86 81 83 81 75 81 71 76 75 70 69 75 65 72 71 73 75 81 84 85 76 72 90 71 72 84 80 94 62 65 97 98 83 90 92 95 80 93

Q: The average American consumes 93 liters of alcohol per year. Does the average college student…

A:

Q: number 4 pls

A: Given data: 25, 31, 20, 30, 22, 32, 37, 28, 29, 23, 35, 25, 29, 35, 29

Q: Suppose that the interval between eruptions of a particular geyser can be modelled by an exponential…

A: Given.X~Exp(θ)f(x;θ)=θe-θx, x>0, θ>0.x1=32x2=10x3=28x4=60

Q: In each of the situations, answer the following. a. b. State the null and alternative hypothesis in…

A: Given two different testing of hypothesis situations with confidence levels.

Q: dependent observations X₁, X2 and X3 come from normal stributions that have the same mean, μ, but…

A: Solution

Q: The mean value of land and buildings per acre from a sample of farms is $1600, with a standard…

A: Given Mean=1600 Standard deviations=300

Q: What is the mean of the data below? The following are the scores of grade 10-Caluag in a 30-item…

A:

Q: A factory that manufactures screws is performing a quality control experiment. Each object should…

A: The provided information is  x¯=13.93  centimetersσ=0.22n=89 The factory that manufactures screws is…

Q: The number of trees planted in 10 housing estates are as follows. 108 42 81 53 70 53 44 75 140 137…

A: Given that: 108 42 81 53 70 53 44 75 140 137 Sample size, n = 10

Q: a. how many lines can be drawn? b. How many triangles can be drawn?

A: here given ,  there are 5 non -linear points in plane  here use combination

Q: 3. How many three digit numbers can be formed from the set 0, 1, 2, 3 .........9 if repetitions are…

A: Here Given Digits  Total Number=10 Here we will use Combination Method for Counting..

Q: QUESTION 5 Below are the ages of 15 students in a college class. What is the median age? OA. 20.6…

A:

Q: Sample size Source of Variation Treatment (Major) Error Total Majors Marketing 10 Management 12…

A: Solution: From the given information,

Q: On a final examination in Biology, the mean was 75 and the standard deviation was 12. What is the…

A: Given problem Given that   On a final examination in Biology,  The mean was = μ = 75 The standard…

Q: Research Question: On average do the number of people visiting Universal Studios and Disney World…

A:

Q: population mean μ. Find the margin of error M.E. that corresponds to a sample of size 19 with a mean…

A: Given Sample size (n) =19 Sample standard deviation=8.8 Confidence interval=80%

Q: The data represent the time, in minutes, spent reading a political blog in a day. Construct a…

A: HERE use given data and 5 classes for making Frequency Distribution

Q: B. Find the indicated measure. 1. D4= Class Intervals Frequency (f) 96-100 5 91-95 11 86-90 81-85…

A:

Q: the mean value of land and buildings per acre from a sample of farm a) Use the empirical rule to…

A: The mean and standard deviation of farms is 1600 and 100 μ=1600σ=100 The number of farms are 72;n=72

Q: Find the area of the shaded region under the standard normal curve: 0 1.50 The area of the shaded…

A:

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

A: Given X-bar=75.8 n=424 Standard deviations=9.5

Q: Plot the following table data on a scatter plot. Show the plot and classify what type of…

A: Scatterplot: Scatter plots have been used to depict how much one change can affect someone else by…

Q: A hypothesis test is to be performed. Describe the two possible outcomes of the test using the…

A: It is given that, last month the average waiting time at a bank was 8.4 minutes.

Q: farmer wants to decide which of the three crops he should plant on his 100-acre farm. The profit…

A: For the given data, We have to calculate Which crop will be selected by equal likely rule and…

Q: In about what percentage of countries would the percentage of people 65 and older be less than 0.10?…

A: Given Information: Mean μ=0.18 Standard deviation σ=0.04

Q: Seven starting youth basketball players have shoe sizes 10, 9.5, 9, 1, 12, 12.5 and 11.5. Solve for…

A: Let all possible random samples of the same size are considered that have been drawn from the same…

Q: a. Ho : p = 0.28 Ha : p > 0.28 b. Level of Significance: a = 0.10 c. Computed Test Statistic: zcom =

A: HERE GIVEN , A research states that 28% of college degrees are from engineering courses. A…

Q: lineup of a basketball team are as follows: 6.2, 11.4, 18.3, 22.9 and 14.8. What is the standard…

A: 5) given data X:6.2,11.4,18.3,22.9,14.8 Here n=5 Average=Xbar =(1/n)*(sum(Xi)) =(1/5)*(73.6)…

Q: cigarettes is chosen. What is approximately the probability that the average amount of nicotine in…

A:

Q: Of 1000 randomly selected cases of lung cancer, 823 resulted in death within 10 years. (a)…

A: Given data: n = 1000 x = 823 Confidence level  = 95%

Q: Suppose we are interested in the proportion of statistics students at this university who are…

A: The question is about sample proportion  Given : No. of randomly selected student ( n ) = 10 No. of…

Q: A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a…

A:

Q: Compute the t- value for each: 1. Find the t- value when μ = 42, , x = 43, s = 5 and n = 20 2. Find…

A:

Q: Puan Fatimah send 10 applications forms for new share issue. If the probability of success for each…

A: Given:  p = 10% = 0.10 n = 10 To use binomial probability distribution.

Q: What is the alternative hypothesis in the problem? The average family family size in the Philippines…

A: Given The average family size in the philippines was reported as 4.30 Mean=μ=4.30 l.o.s.=α=0.10

Q: Let X₁, , Xn be a random sample from a large population following a uniform distribution over [0,…

A:

Q: Scenario: A mathematics placement test is given to all entering freshmen at a small college. A…

A: Correlation coefficient is denoted by r

Q: Class interval 100-124 125-149 150-174 175-199 200-224 225-249

A: The following data is given Class interval frequency 100-124 5 125-149 8 150-174 16…

Q: In a market survey conducted to examine whether the choice of a brand is related to the income…

A: Claim : the choice of a brand is related to the income levels of the consumers.

Q: Find the standard score (round to two decimal places as needed)  z=  Find the P-value (round to…

A: here given  n = 36  x¯ = sample mean  = 0.59 s = sample standard deviation  =  0.18  significance…

Q: A professor at a local university noted that the exam grades of her students were normally…

A: The mean is 73 and the standard deviation is 11.

Q: 1. Matt throws javelins; he wants to improve so he's a champion javelin thrower. Cur- rently his…

A: Given that: Min Lower Quartile Median Mean Upper Quartile Max Standard deviation 57.8 73.3 83.5…

Q: 2. The General Store at State University is an auxiliary bookstore located near the dormitories that…

A: Given that: Total cost of oven and freezer pizza / fixed cost = $27000 Cost of 1 frozen pizza =…

Q: The following are the marks of the Statistics subject obtained by 40 students in a final…

A:

Q: What is the median of the data set below? 28, 35, 50, 56, 88, 63, 35, 72, 84, 88

A:

Q: Miles, x 5 6 2 0 9 16 5 7 0 8 Misses, y 2 2 4 5 4 5 2 3 1 4 (a) Draw a scatter plot for the variable…

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

Q: It was found that 33% of all diners order vegan meals and that 90% of all diners are undergraduate…

A: The following information has been given: Let us consider "V" denotes the event diner orders a…

Q: Find the area of the shaded region under the standard normal curve: 0 1.82 Area of the shaded region…

A:

Q: Treatment N Mean Median Minimum control 60 1.1737 1.1600 .65 3dS 60 1.0043 .9600 .67 6dS 60 .9160…

A: Mean is the average measure of the observation. It is the type of measure of central tendency. It is…

Q: What is the value of B ? Complete the table. Class Interval Frequency (1) Lower Boundary (LB) 70-76…

A: Class Frequency (f) Lower boundary(LB) (class mark) (x) f⋅x <cf 70-76 15…