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Liberty travel advertises stating they have very competitive rates. They claim that the mean cost for lodging daily for two adults when on a vacation in Chicago Illinois is at least $240.00. A random sample of 24 groups of adults has a mean daily lodging cost of $233 and a standard deviation of $12.50. Is there enough evidence to reject the claim at α= 0.10? Assume the population is normally distributed.
a. Write the claim (Ho and Ha)
b. Find the P-value
c. Decide whether to reject or fail to reject the claim.
d. Interpret.
Using goodness-of-fit test and.01 level of significance, find out whether accidents are evenly distributed all through the day. Write a short description of your conclusion.
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
The critical value of F at 95% confidence when there is a sample size of 21 for the sample with the smaller variance, and there is a sample size of 9 for the sample with the larger sample variance is:
Is there evidence that the change was successful in reducing the wait time? (use 0.05 level of significance)
Prepare a scatter plot and Interpret the meaning of slope, b1, in this problem
Dinner B which costs $135.30 for dinner submitted by salesperson with mean cost of $117.50 and standard deviation of $30 per dinner?
Assume that the class has 60 students and that the examination period is 90 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time.
Calculate and interpret standard error of estimate se and coefficient of determination R2 for these data.
What is the smallest number of consumers that Timex can survey to guarantee a margin of error of .05 or less at a 99% confidence level and calculate the intervals correctly
A psychologist determined that the number of sessions required to obtain the trust of a new patient is 1, 2, and 3. Let x be the random variable indicating the number of sessions required to gain the patient's trust. The following probability fu..
Her results (in hours until turning a particular shade of brown) are in the table below. At ∞= .01, did she see a difference between the two treatments?
Discuss how to perform a test of hypothesis to determine whether the variances of two populations are equal. Include a discusssion of why the larger sample variance is placed in the numerator in the Test Statistic for comparing two variances.
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