At the end of 2015, 2016, and 2017, the average prices of a share of stock in a portfolio were $34.83, $34.65, and $31.26 respectively. To investigate the average share price at the end of 2018, a random sample of 30 stocks was drawn and their closing prices on the last trading day of 2018 were observed with a mean of 33.583 and a standard deviation of 19.149. Estimate the average price of a share of stock in the portfolio at the end of 2018 with a 95% confidence interval. Compare and Briefly discuss

Q: According to one study, the average hours of sleep on a weeknight for men was 6.9 hours with a…

A:

Q: Es On their website, a property management company states that the mean monthly rent for apartments…

A: As per bartleby guideline expert have to answer first three subparts only dear student please upload…

Q: A​ half-century ago, the mean height of women in a particular country in their 20s was 63.8 inches.…

A: Given data,μ=63.8σ=2.51If n=28P(X≥65.08)=?

Q: A group of domestic equity mutual funds had a mean return of 6.2% with a standard deviation of 1.8%.…

A: Given information:- μ=6.2, σ=1.8 a)  The P-value for the lowest 16% score = 0.16 Determine the…

Q: 3. A research reported that undergraduate students have a mean credit card balance of $3,173. This…

A: Here use both way of hypothesis testing

Q: Among social work students, the variable "number of textbooks purchased during the academic year"…

A: The Normal distribution is also called as the Gaussian distribution. It is the most common…

Q: A certain brokerage house wants to estimate the mean daily return on a certain stock. A random…

A: Obtain the 95% confidence interval for the mean daily return on this stock. The 95% confidence…

Q: .In a small Western city, there is a population of 1,000 individuals who received monthly payments…

A: Given,   Mean = 500 Standard deviation = 70   The objective is to find the required proportions.

Q: According to a recent survey, the population distribution of number of years of  education for…

A: What is the standard error of mean?

Q: In the United States, someone is sexually assaulted every two minutes, on average, according to a…

A:

Q: Find the standard  deviation of 1.2, 2.7, 5.3, 3.4, 4.1, 4.6, 3.3, 2.7,  3.3, 2.6

A: Here we have to find, The standard  deviation of 1.2, 2.7, 5.3, 3.4, 4.1, 4.6, 3.3, 2.7,  3.3, 2.6.…

Q: Google is analyzing the decision to launch a new Pixel phone. The development costs are estimated to…

A:

Q: A certain brokerage house wants to estimate the mean daily return on a certain stock. A random…

A: Given,sample size(n)=14degrees of freedom(df)=n-1df=14-1=13α=1-0.90=0.1α2=0.05t0.05(13)=1.771…

Q: health economist does a study on the average life expectancy of every country in Europe.  The…

A: Given, mean life of the country is 81.2 and standard deviation is 3.7. Z-score is 1.2. We will use…

Q: A factory’s power bill is $55,000 a year. The first cost of a small geothermal power plant is…

A: Given: Mean = $150000 Standard deviation = $50000

Q: If gasoline in a certain part of the country has a mean price of $1.62 per gallon and a standard…

A: From the given information, Mean = $1.62 gallon Standard deviation =8 cents =$0.08 gallon (since 100…

Q: Suppose that the distribution of income in a certain tax bracket is approximately normal with a mean…

A: Probability distribution: A probability distribution function is the statistical function that…

Q: State the null and alternative hypotheses. Using α = 0.01 level of significance, what is your…

A: 1. Let μ denotes the mean credit card balance for undergraduate students. The claim of the test is…

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A: The provided information are: Population mean (µ) = 5.7 Population standard deviation (σ) = 1.2…

Q: A student organization uses the proceeds from a soft drink vending machine to finance its…

A: Given Information:

Q: A sample of assistant professors on the business faculty at state-supported institutions in Ohio…

A: It is given that the mean is 72000 and the standard deviation is 3000.

Q: Newborn babies: A study conducted by the Center for Population Economics at the University of…

A:

Q: A marketing researcher wants to estimate the mean amount spent per year (5) on a web site by…

A: Given information Hypothesized mean µ = $49 Sample size (n) = 130 Mean x̅ = $55 Standard deviation…

Q: A marketing researcher wants to estimate the mean amount spent per year​ ($) on a web site by…

A: Let, X = Amount spent per year​ ($) on a web site by membership member shoppers. Given that;…

Q: statewide, social workers average 10.2 years of experience. In a random sample, 203 social workers…

A: State the hypotheses.

Q: mean of $5.02 and a standard deviation of $0.09. Using the Empirical rule, find the range in which…

A: Given data: Mean and standard deviation of the hourly wages of employees is: μ=$5.02σ=$0.09 The…

Q: The credit card balances on 1,000 accounts at the Jefferson Valley Bank have a mean of $760 and a…

A: mean = 760 s = 120 n = 1000

Q: n the first quarter of 2019, the average home loan for first time buyers was R950, 000. Assuming a…

A: Given : In the first quarter of 2019, the average home loan for first time buyers was R950, 000…

Q: Songs on Leila’s smartphone have a mean length of 4.3 minutes and a standard deviation of 1.2…

A: Given: The mean length of the songs is X¯=4.3 minutes. The standard deviation of the songs is…

Q: 24. Suppose annual salaries for sales associates at Target have a mean of $32,500 and a standard…

A: According to the provided information, Mean (μ) =$32500 Standard Deviation (σ) = $2500

Q: Assume the annual day care cost per child is normally distributed with a mean of ​$9000 and a…

A:

Q: The daily stock price for International Business Machines (IBM) historically has followed an…

A: Given, mean μ=$141.796 standard deviation σ=$4.9101

Q: A​ half-century ago, the mean height of women in a particular country in their 20s was 64.7 inches.…

A: Given that: X is normal Distributed with mean µ = 64.7 and standard deviation σ = 2.88 By using…

Q: study indicates that​ 18- to​ 24- year olds spend a mean of 115 minutes watching video on their…

A:

Q: The accounts of 4,500 credit card customers out of a sample of 40,000 that were reviewed did not…

A: The sample size of review credit card customers: The number of unsatisfactory performers from the…

Q: Suppose that the amount of time that takes place for the Bureau of Internal Revenue(BIR) to send…

A:

Q: At least 335 of the largest companies in the United States recorded revenue growth in the interval…

A: Probability

Q: UG is curious how likely they are to reach their annual profit target. Past experience suggests that…

A: Given Mean =12 Standard deviation=2

Q: 1. Assume that the time a student stays in school is normally distributed with a mean of 5 hours and…

A: Mean(μ)=5 hoursStandard deviation(σ)=0.5 hours

Q: Consider the company, which produces lightbulbs with a mean lifetime of 1,200 hours and a standard…

A: