QUESTION 6 "You place 50% of your money in a stock portfolio that has an expected return of 10% and a standard deviation of 8%. You put the rest of your money in a risky bond portfolio that has an expected return of 6% and a standard deviation of 4%. The stock and bond portfolios have a correlation of 0.15. The standard deviation of the resulting portfolio will be

Q: Question 2. A survey from summer 2019 found that the average American adult spent 3.5 hours a day in…

A: Probability distribution

Q: Question 8 The average monthly mortgage payment including principal and interest is $855 in the…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: QUESTION 8 The antibody production of 12 male red-winged blackbirds before and after receiving…

A: As given: The mean change in antibody production was d = 0.056 The standard deviation was sd =…

Q: QUESTION 6 PART A- (This question has 3X the normal weight). What is the value of Spearman's…

A: Data given:

Q: A researcher wants to compare the mean concentration of two medications considered biologically…

A:

Q: Question 5. (CHILDHOOD NEVER COMES BACK) Bubba bought a bubble blower machine which produced 3125…

A: Question 5. The symmetric bell shaped curve is, The proportion of bubbles have age more than 17…

Q: Noel, a 35-year-old office worker, has been struggling with his weight for a long time. He is…

A: Let X represent the average weight of Noel. Given: Mean μ=220.6 Standard deviation σ=96   We are…

Q: A company that has a large number of supermarket grocery stores claims that customers who pay by…

A: Given data: Let X be the number of customers who pay by personal checks. X is normally distributed…

Q: Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine…

A: Given : sample size, n = 20 sample mean, x̄ = 36.015 population standard…

Q: Question #2 A normal distribution has a mean of 45 (μ = 45) and a standard deviation of 10. At what…

A: Note: According to Bartleby guidelines expert solve only one question and rest can be reposted

Q: Question 2: - Find the standard deviation for the following data: - (8 MARK) 4,6,10,12,18 Your…

A: Given : Data : 1. 4 , 6 , 10 , 12 , 18 2. Marks obtained No. of students 10-20 2 20-30 3…

Q: Question 9 The systolic blood pressure of adults in the USA is nearly normally distributed with a…

A:

Q: QUESTION 21 Which of the following letters is used to represent a correlation coefficient? OR Ot Or…

A: We have given that,  We have to check the which letter represent a correlation coefficient in the…

Q: a. What is the probability that a laser fails before 6060 hours?  b. If 9 lasers are used in a…

A: The lifetime of a semiconductor laser at a constant gower is normally distributed with a mean of…

Q: QUESTION 10 What would the scatter plot show for data that produce a Pearson correlation of r =…

A: Given  r=-0.88

Q: Question 1 Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The…

A: The formulae for Confidence interval about true mean when the population standard deviation known is…

Q: he weekly rental prices of rental properties are normally distributed with a mean of $250 and a…

A: 1.   From the given information, let us define the random variable X as the weekly rental prices of…

Q: Tommy Wait, a minor league baseball pitcher, is notorious for taking an excessive amount of time…

A: Obtain the standard z-score for the random variable X equals 40.60. The standard z-score for the…

Q: The performance on a nationally standardized aptitude test in a certain professional field is…

A: Given data, Mean=500 sd=100

Q: Question 4 The average height of students in a freshman class of a certain school has been 165.24 cm…

A: Yes there is sufficient evidence to believe that the height of freshman student changed based on…

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A: We have find contributions.

Q: Question 3 A set of final examination grades in an introductory statistics course is normally…

A: Given problem Given that A set of final examination grades in an introductory statistics course is…

Q: QUESTION 4 An astronomer wants to measure the distance from his observatory to a distant star.…

A: Given, mean = 10, sd = 2 , e = 0.5

Q: QUESTION 10 Provide an appropriate response. A physical fitness association is including the mile…

A:

Q: QUESTION 14 You have measured 35 different quantities (X, Y, of each a large (n-1000) collection of…

A: Consider N be the number of false positives. The number of pairs are 35C2

Q: With the new mean and standard deviation, how many standard deviations away from the mean is the…

A: The standard deviation can be considered as the average difference between an observation and the…

Q: QUESTION 1 Find  the standard deviation of the following data items:   22, 27, 27, 35

A:

Q: Question 4. In 2019, a study found the average American spent 2.77 hours a week in video calls, with…

A:

Q: The pucks used by the National Hockey League for ice hockey must weigh between 5.5 and 6.0 ounces.…

A: Let X denote the weights of pucks produced at a factory are normally distributed with a mean of 5.63…

Q: QUESTION 10 An investor has decided to form a portfolio by putting 3596 of his money into Google's…

A: The proportion of investments in the stocks, Google and Apple are:   The expected returns of the…

Q: QUESTION 14 The line width for a semiconductor manufacturing is assumed to be normally distributed…

A: Answer:-  Let, X be the random variable follows N(9,2.1).

Q: Question 07 The average number of years a person takes to complete a graduate degree program is 3.…

A: We want to find the following probability a) More than 4 years to complete the program   b) Less…

Q: Question three John and his friend were recently having a heated discussion about the number of men…

A: Given that, John and his friend were recently having a heated discussion about the number of men…

Q: Question 3 The average score of all sixth graders in school District A on a math aptitude exam is 75…

A: The hypothesis test used to compare the population and sample. Two types of hypothesis test, they…

Q: Question 16 The time it takes a student to finish this exam follows an exponential distribution with…

A:

Q: Question 5: A company uses varying amounts of a chemical compound each month. The amounts vary…

A: Mean is 150 and a standard deviation is 16.  Sample size 12.

Q: Question 3 A small local business has an average of 130 customers per day, with a standard deviation…

A:

Q: QUESTION 14 An investor has decided to form a portfolio by putting 45% of his money into Google's…

A: The given statistics for the two stocks include μG=12%μA=20%σG=0.10σA=0.20 And the proportion, x,…

Q: QUESTION 4 A recent salary survey at a large multinational corporation was carried out. Analysis of…

A:

Q: QUESTION 6 Suppose that total cholesterol in US men aged 35-44 can be modeled by a normal…

A: GivenMean(μ)=205standard deviation(σ)=37.8

Q: The distribution of the weights of a certain type of mangoes is normally distributed with a mean of…

A: The random variable permeability index follows normal distribution. The population mean is 150. The…

Q: Question 1: a) A medical researcher wants to investigate the amount of time it takes for patients'…

A: a. The critical value for Zα = 0.05 is obtained below Here, confidence level is 0.95. For 1 - α =…

Q: QUESTION 3 Two classes A and B of 200 students each take the same examination, out of 100 points.…

A: We can find probability using z table.

Q: Glucose levels in patients free of diabetes are assumed to follow a normal distribution with a mean…

A: Given information- Population mean, μ = 120 Population standard deviation, σ = 16 Let X be the…

Q: One of the cars sold by Walt's car dealership is a very popular subcompact car called the Rhino. The…

A: Let X be the sale price of the car. Then, X~ N( 19600, 3602). Hence,…

Q: The weekly rental prices of rental properties are normally distributed with a mean of $250 and a…

A: It is given that the mean is 250 and standard deviation is 50.

Q: QUESTION 3 The length of an injection-molded plastic case that holds magnetic tape is normally…

A: Given : μ=90σ=2X~N(μ=90,σ2=(2)2) We want to find,P(X<87 or X>93)=?