If you had a sample size of 50 and did not know the standard

Assignment Help Basic Statistics
Reference no: EM13241287

If you had a sample size of 50 and did not know the standard deviation of the population, would you use a t or a z statistics in your analysis? Why?

Reference no: EM13241287

Questions Cloud

Find the magnitude and direction of the force on the charge : A -6.00 µC charge is moving with a speed of 8.20 104 m/s parallel to a very long, straight wire, Find the magnitude and direction of the force on the charge.
What responses are there other ways of researching managem : You work for a division of a textbook publisher that manages the company's economics textbooks. Senior managers have instructed you to find a way to reduce your division's total cost by 30 percent.
What is the probability that they together make : A husband and wife make their decisions independently of each other, and then they compare their decisions. If they agree, the decision is made; if they do not agree, then further consideration is necessary before a decision is reached.
Explain the ph during the titration of propanoic acid : Calculate the pH during the titration of 20.0mL of 0.27 M Propanoic Acid (HPr) with 28.0mL of 0.32 M NaOH. Ka=1.34 x 10^-5.
If you had a sample size of 50 and did not know the standard : If you had a sample size of 50 and did not know the standard deviation of the population, would you use a t or a z statistics in your analysis? Why?
Find the heat transfer for the process in btu : 6 kg of a substance undergoes a process from 1.00 MPa, 0.50 m^3 to 500 kPa, Find the work in kJ for the path given below and Find the heat transfer for the process in Btu. PV^1.6 = constant
Important influence in the history of the humanities : In what way(s) were the Ancient Greeks an important influence in the history of the humanities? (Describe at least one contribution and explain why it is important.)
Compute the ph of a buffer solution : Calculate the pH of a buffer solution containing 0.65 M CH3COONa. Calculate the pH after 0.0010 mol HCl is added to 450.0mL of buffer.
The null and alternative hypothesis to test the researcher : Set up the null and alternative hypothesis to test the researcher's prediction.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determining the minimum sample size

The branch manager of a pet supply store wants to study characteristics of customers of his store. In particular, he decides to focus on two variables

  Test whether there is any change in iq after the training

Test whether there is any change in IQ after the training program. (The absolute value of t for 4 degrees of freedom at 1% level for one-tailed and two tailed tests are 3.747 and 4.604 respectively.

  Confidence interval of the true mean of heartbeats

For a group of 10 men subjected to a stress situation, the mean number of heartbeats per minute was 126, and the standard deviation was 4. Find the 95% confidence interval of the true mean.

  Explain experimental or a correlation study

The researcher then records the level of activity for each child during a 30 minute session on the playground. Is this an experimental or a correlation study? Explain your answer.

  Calculating expected value for decision

Calculate expected value for each decision and choose the best one. Find out how much firm would be eager to pay to a market research firm to gain better information about future market conditions.

  Determine c if the average cost per hour is the same

customer's time is worth $1 per hour and should be accounted for in the model. If customers arrive at a Poisson rate of 10 per hour, then what is the average cost per hour if Mary is hired? if Alice is hired?

  Confidence interval for the proportion of all kernels

Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86. a) Construct a 90 ..

  Data about statistics - hypothesis testing

A CEO of a large pharmaceutical company would like to determine if he should be placing more money allotted in the budget next year for television advertising of a new drug marketed for controlling asthma.

  Determining solution using gauss-jordan method

Use Gauss-Jordan method to determine solution to following system of equations?

  Description of p-value for coin

A coin tossed 100 times and 530 heads appear. At a=0.05, test the claim that this is a non biased coin. Use a P-Value. does this suggest the coin is fair?

  Find probability that item was manufactured by machine x

Production of the three machines one article is selected at random. if it found that this article is defective, what is the probability that it was manufactured by machine X?

  Information about margin of error-confidence interval

To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronic firm timed 40 technicians in the performance of this task, getting a mean of 12.73 minutes and a standard deviation of 2.06 mi..

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