Question: A simple random sample of 100items resulted in a sample mean of50.The population standard deviation is=20.What is the 95%confidence interval for the population mean? (46.08,53.92)

A simple random sample of 100items resulted in a sample mean of50.The population standard deviation is=20.What is the 95%confidence interval for the population mean?

(46.08,53.92)

(45.61,54.38)

(44.4, 55.6)

(43.46,56.53)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

please please help! I know this is a lot but my grade truly depends on this. THANK YOU In the context of this investigation, the 3005 invoices obtained by the CPA firm are our population of interest,...

CoursHeroTranscribedText: Question 1 The daily volume of a brokerage company follows a normal distribution. The director wants to estimate the daily volume negotiated. a) What size should have a...

1 The daily volume of a brokerage company follows a normal distribution. The director wants to estimate the daily volume negotiated. a) What size should have a sample to estimate the daily trading...

\fThis is an electronic version of the print textbook. Due to electronic rights restrictions, some third party content may be suppressed. Editorial review has deemed that any suppressed content does...

1 Executives at Mega Mart Supermarket claim that a typical family of four spends $250 weekly on routine, non-holiday, grocery purchases. According to published industry standards, the population...

The Future Government Club wants to sponsor a panel discussion on the upcoming national election. The club wants four of its members to lead the panel discussion Obtain a simple random sample of size...

someone please answer my question, this is the fourth time posting :( 4. The sampling distribution of the sample proportion In 2007, about 20% of new-car purchases in Florida were financed with a...

1. Ann Landers, who wrote a daily advice column appearing across the country, once, asked her readers, \"if you had it to do over again, would you have children?\" Of more than 10,000 readers who...

please explain with the excel 7.(15 pts) Arrivals to a reception desk at ProMedica have an interarrival time that follows the distribution shown in the next table. Service times follow another...

before you do anything I need to know how much is it going to cost me if i let you do all steps of these questions ? PROBLEM 1. A population of 1,000 students spends an average of $10.50 a day on...

Two engineers are having an argument about the efficiency of a tube-side multipass heat exchanger compared to a similar exchanger with a single tube-side pass. Mr. Smith claims that for a given...

Do you think leadership is more important or less important in todays flatter, team-based organizations? Are some leadership styles better suited to such organizations as opposed to traditional...

ccording to the SEC s Staff Accounting Bulletin 1 0 8 , what approach is used when assessing uncorrected misstatements? a . Percentage approach. b . Matrix approach. c . Dual approach. d . Judgmental...

For each employee listed, use the wage-bracket method to calculate federal income tax withholding, assuming that each has submitted a pre-2020 Form W-4. Then calculate bot he state income tax...