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Question: Although we have not emphasized it, the paired t-test can be used to test hypotheses in which the null value is something other than 0. For example, suppose that the proponents of a diet plan claim that the mean amount of weight lost in the first 3 weeks of following the plan is 10 pounds. A consumer advocacy group is skeptical and measures the beginning and ending weights for a random sample of 20 people who follow the plan for 3 weeks. The mean and standard deviation for the difference in weight at the two times are 8 pounds and 4 pounds, respectively.
a. What is the parameter of interest? Be sure to specify the appropriate population.
b. What are the null and alternative hypotheses?
c. What is the value of the test statistic?
d. What is the p-value for the test?
e. What conclusion can the consumer advocacy group make? Use a = .05.
(a) Find the lower and upper quartiles, median, and interquartile range. Check for any outliers and interpret. (b) Construct a box plot and interpret. (c) Are there any outliers?
rotter partners is planning a major investment.nbspnbspa probabilistic estimate gives the following distributionin
1. What are the health effects of radon gas? What are some sources of radon gases? How can a radon gas problem in a building be alleviated?
question a black and red die are thrown and let x be a random variable denoting the sum of the dice.a. find all sample
Need some assistance with participation posts for my Statistics class. Thank you Tutors 1. There are two levels of measurement that are qualitative: Nominal and Ordinal. Provide an example of each.
Items that fail during the test will be replaced. Assuming the time-to-failure distribution to be exponential, determine the plan using Handbook H-108.
In a normal population with sigma=20, a random sample of size n gave X(mean)=56.53. At the 5% significance level, make a two-tailed test of the null hypothesis mu=50, when (a) n=24 (b) n=36
Describe the context of the data set. Cite a previous description if the same data set is used from a previous assignment. To increase formal tone of the DAA, avoid first-person perspective "I." For example, do not write, "I ran a scatter plot sho..
suppose that a and b are events defined on a common sample space and that the following probabilities are known. find
Mr. James McWhinney, President of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales.
Find the probabilities of the like to dance and don't like to sing.- don't like to dance and like to sing.- don't like to dance and don't like to sing.
Analyze the Descriptive stats for each numeric variable, Histogram for each numeric variable, Bar chart for each attribute (non numeric) variable and Scatter plot if the data contains two numeric variables.
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