A random sample of 144 observations has a mean of 20 a

Assignment Help Basic Statistics
Reference no: EM13584776

A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22. The population standard deviation is known to equal 4.8. The 95.44% confidence interval for the population mean is:

a. 15.2 to 24.8

b. 19.200 to 20.800

c. 19.216 to 20.784

d. 21.2 to 22.8

Reference no: EM13584776

Questions Cloud

If tucker incs net sales decreased from 90000 in year 1 to : if tucker inc.s net sales decreased from 90000 in year 1 to 45000 in year 2 and its cost of goods sold decreased from
What is the length of the double bond between phosphorous : what is the length of the double bond between phosphorous and oxygen in
For the most recent year list the amount of net cash inflow : 1. does the company use the direct or the indirect method to prepare the statement of cash flows? how can you tell?
A horizontal magnetic field of 10 x 10-4 t is at an angle : a horizontal magnetic field of 1.0 x 10-4 t is at an angle of 30o to the direction of the current in a straight wire 75
A random sample of 144 observations has a mean of 20 a : a random sample of 144 observations has a mean of 20 a median of 21 and a mode of 22. the population standard deviation
To parallel plates with a separation of 15 cm produce : in a velocity selector the uniform magnetic field of 1.5 t is produced by a large magnet. two parallel plates with a
Molecules have additional degrees of freedom that atoms : molecules have additional degrees of freedom that atoms dont possess namely rotation and vibration. the energies
If a charge particle move in a straight line and there no : if a charge particle move in a straight line and there no other forces on it except possibly from a magnetic field can
A random sample of 64 students at a university showed an : a random sample of 64 students at a university showed an average age of 25 years and a sample standard deviation of 2

Reviews

Write a Review

Basic Statistics Questions & Answers

  How many business students selected to estimate mean

How many business students must be randomly selected to estimate the mean monthly earnings of business students at one college?

  Determining the significance level

During recent seasons, Major League Baseball has been criticized for the length of the games. A report indicated that the average game lasts 3 hours and 30 minutes.

  Find probability the game was played at night

The team wins 55% of their night games, and 85% of their day games. According to today's newspaper, they won yesterday. What is the probability the game was played at night?

  Means of sampling distributions

What symbol is used to represent the mean of the sampling distribution of y-(ybar)? Explain and what symbol is used to represent one value from the sampling distribution of y-(ybar)? Explain

  Find probability that selected vials has a hairline crack

In a shipment of 59 vials, only 18 does not have hairline cracks. 6 vials are randomly selected from the shipment. Find the probability that at least one of the 6 selected vials has a hairline crack.

  Pearson coefficient and chi square research

Need a behavioral research situation that could use a Pearson coefficient research study and a chi square research study; also understanding the rational of each one.

  Do you think there is sufficient reason to question

On a police sergeants exam, the historical mean scored was 80 with a standard deviation of 20. Four offiers scored 195,175,191, and 189 respectively

  Probability that a randomly selected student will pas exam

Students need a score of 60 points to pass the exam. What is the probability that a randomly selected student will pas the exam? (P(X ≥ 60))

  Estimating the regression equation

Is there a relationship between sales and newspaper advertising? Support your answer?

  Hypothesis testing-z test and difference of proportions

In the year 2000, the state of Indiana began a $40-million renovation of its state fairgrounds, which included the building of a miniature golf course and a state-of-the-art livestock building.

  It is claimed that in a bushel of peaches less than ten

it is claimed that in a bushel of peaches less than ten percent are defective. a sample of 400 peaches is examined and

  Find probability that in remaining eight plants four produce

If 12 of them produce yr owers what is the probability that in the remaining 8 plants 4 produce yw owers, and 3 produce gr owers?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd