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The following random sample was obtained from a normal population with variance given as 1.00.
SN = {9.37, 8.86, 11.49, 9.57, 9.15, 9.10, 10.26, 9.87, 7.82, 10.47}
To test the hypothesis that the population mean is different from a postulated value of 10.00, (i) state the appropriate null and alternative hypotheses; (ii) determine the appropriate test statistic; (iii) determine the rejection region for a hypothesis test at the α = 0.05 signi?cance level; (iv) determine the associated p-value. (v) What conclusion should be drawn from this test?
q1. if you use a 0.10 level of significance in a two-tail hypothesis test what is your decision rule for rejecting a
In a recent year, the FCC reported that the mean wait for repairs for AT&T customers was 25.3 hours. In an effort to improve this service, suppose that a new repair service process was developed.
Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. A random sample of 16 heights is obtained.
The recorder has an instantaneous failure rate of 0.0002 failures/hour (constant rate). What is the probability that the system is functioning after 1000 hours? (Show work).
Problem 1: Use the given graph to find the mean, median, and mode of the distribution.
a cup of fourth of july candies contains 6 red 7 white and 8 blue candies. if five are randomly selected then what is
Post by Day 3 your one-sample ttest scenario. What would need to change in the scenario to result in the need for a two-sample ttest? Explain whether the two-sample scenario would be categorized as having independent samples or related samples and..
The mean lifetime of electric light bulbs produced by a company has in the past been 1120 hours with a standard deviation of 125 hours. A sample of 20 bulbs revealed a standard deviation in the lifetimes of 150 hours.
A large department store hired a researcher to compare the average purchase amounts for the downtown store with that of its mall store. The information shown was obtained.
an automated filling process used by a soft drink manufacturer fills bottles marked as containing 32 ounces. the amount
You are running a chi-squared test. If you have 5 groups with 3 characteristics each, what would your critical value be with an alpha of .25? a . Between 0 and 3.0
Suppose you are traveling on business to a foreign country for the first time. You do not have a bus schedule or a watch with you. However, you have been told that buses stop in front of your hotel every 20 minutes throughout the day. If you show ..
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