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How would I test H0?: μ = 100 versus H1?:μ ≠? 100, a simple random sample size of n =18 is obtained from a population that is known to be normally distributed. I need to know the formulas to compute test statistic x = 104.1 and s =8?, what would t equal? Also, if I was to test the hypothesis at the α =0.01 level of significance, what is the critical values? Would I reject the null hypotheses?
Find out the least-squares regression line and interpret its slope.
perform hypothesis tests. please label the test statistic you found t value z value or chi square and the value. for
At the .10 significance level you will test to determine if there has been an increase in selling time. Is this a 1 or 2 tail test?
Determine the following:Mean, Median and Variance.
the number of people arriving for treatment at an emergency room can be modeled by a poisson process with a rate
The mean and standard deviation are found to be 505 hours and 18 hours, respectively. Perform the appropriate test of hypothesis to determine whether the new bulb should be used. Use a 0.01 level of significance.
Find the expected number of failures due to a problem with the inside wiring. Find the probability that at least 10 failures are due to a problem with inside
as we have noted in previous chapters even a very small effect can be significant if the if the sample is large enough.
In multi-choice test, each question has four options. Students wil get 10 points for each correct answer; lose four points for each incorrect answer; and receive no points for unanswered questions.
Use the F test of ANOVA (assume α = 0.05) to decide whether or not there are any differences in true average lumen outputs between the three brands for this type of light bulb.
• A student of the author surveyed her friends and found that among 20 males, 4 smoke and among 30 female friends, 6 smoke. Give two reasons why these results should not be used for a hypothesis test of the claim that the proportions of male sm..
Yearly automobile inspections are required for residents of the state of Pennsylvania. Suppose that 18% of all inspected cars in Pennsylvania have problems.
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