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Construct a 95% confidence interval for the proportion and calculate the P value for the given test.
1. In the test of hypothesis Ho: μ = 100 vs H: μ < 100, a sample of size 250 yields the test statistics Z = -1.472 Calculate the P-valuefor this test.
2. In a random sample of 400 persons who were given a flu vaccine, 136 said that they experienced some type of discomfort. Construct a 95% confidence interval for the proportion of all those who experience some type of discomfort.
Infer that the difference in the level of satisfaction with service between the two branches.
State along statistical certainty there is a difference among the population proportions of those favoring Statement.
Find at least what percentage of all homeowners in this city pay a monthly mortgage of 865 to 1,675.00.
Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28. The probability that X will take on a value between 21 and 25 is.
Mighty Manufacturing must decide on the processes to use to produce 1650 units. If machine 1 is used, its production will be between 300 and 1500 units. Machine 2 or machine 3 can be used only if machine 1's production is at least 1000 units. Ma..
Find the probability that he will answer at least 3 questions correctly.
Give an example of a hypothesis test. State what the Null and the Alternative hypotheses.
The following study was developed by Economist Simon Fass. Fass surveyed a sample population of low-income households in St. Martin. The variables analyzed were monthly income per adult and choice of rental contract for housing.
Consider binomial distribution with 14 identical trials, and probability of success of 0.4.
At the 0.05 level of significance, can we conclude Middletown students remained in their districts less time than Brockton students? Make use of 5-step hypothesis testing procedure.
Use given data to create the unbiased point estimate of 12σ'> 2 of percentage of termites that are minor workers.
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
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