Determine the critical value for the test

Assignment Help Basic Statistics
Reference no: EM1389697

The average U.s. daily internet use at home is two hours and twenty minutes. A sample of 64 homes in soddy daisy showed an average usage of two hours and 50 minutes with a standard deviation of 80 minutes. We are interested in determining whether or not the average usage in soddy-daisy is significantly different from the U. S. average.

a) State the null and alternative hypotheses to be tested.

b) Compute the test statistic.

c) the null hypothesis is to be tested at 95% confidence. Determine the critical value(s) for this test.

d) What do you conclude?

Reference no: EM1389697

Questions Cloud

Probability of sample mean leads no rejection : N=120, population standard deviation is (known) 5, alpha =.05, standard error of the mean (sigma of xbar)= .46, h0 is rejected if xbar
Describing the differing approaches of nursing leaders : Essay describing the differing approaches of nursing leaders and managers to issues in practice.
What is the effective capacity of the process : or the month of November, 2010, the firm has generated the 150 orders, 75 of each type. Assume one month equals 20 days. What is the effective capacity of the process
Components of the reticuloendothelial system : Define the complement cascade and there are two infection-fighting results of this cascade. What are they and discuss the main components of the reticuloendothelial system
Determine the critical value for the test : the null hypothesis is to be tested at 95% confidence. Determine the critical value(s) for this test.
What is the additional holding cost on account : what would be the ROP and the associated safety stock. What is the additional holding cost on account of the safety stock.
Determine length of the newly transposed copia element : A Drosophila P element 2.2 kb in length is modified by adding a 0.8-kb intron sequence to one of its exons. A copia element of 5.2 kb is modified through adding the same 0.8-kb intron to its central region.
Five step protocol : Using a five step protocol, you have purified an enzyme to the point where the specific activity remains constant when you perform any additional purification steps.
Specific mwr program : As a result of these actions, explain the "who, what, when, where and why" of how you would add new life into a specific MWR program to increase and continue its success?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Test whether there is significant change using paired t-test

For the sample of men, performance on the simulator task declined by an average of 2.9 points with s = 4.1. Is this a statistically significant change? Use a two-tailed test with  = .05.

  Determining the probability that person has blood type o

Determine the probability that person selected has blood type O? Given that person selected is a male, determine the probability that their blood type is AB?

  Significance differences among the population mean

Using α = .05 test for significance differences among the population mean wasted time for theses three urban areas. What is the p-value? What is your conclusion?

  Degrees of freedom and an approximate p-value

For each of the F statistics given above find the degrees of freedom and an approximate P-value. Summarize the results of these tests.

  Recording the count of spots on the up face

Roll a die and record the count of spots on the up face: P(1) = 0, P(2) = 1/6, P(3) = 1/3, P(4) = 1/3, P(5) = 1/6, P(6) = 0.

  What is the possibility that it is blue or white

If you draw two balls without replacing the first one, what is the possibility that one ball is red and the other is white.

  Calculation assuming a two-sided two-sample t-test

Make your calculation supposing a two-sided two-sample t-test with a type I error (alpha) of 0.056

  Level of confidence and sample size

When the level of confidence and sample size remain the same, a confidence interval for a population proportion π will be __________ when p(1-p) is larger than when p(1-p)   is smaller.

  Plotting the confidence interval

Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.

  Hypothesis for proportion

what is the probability of obtaining at least 6 cases in this class if the nationwide rate holds True?

  Probability of the system-in continual operations

If the mean lifetime of this type of component is 100 hours and its standard deviation is 19 hours, how many of these component must be in stock so that the probability of the system is in continual operations for the next 2,000 hours is at least ..

  Evaluating average annual expenses of students

To evaluate average annual expenses of students on books and class materials sample size 36 is taken.

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