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A family has 5 children and 1 of them is a boy...the percentage of boy is 1/5, or .020. Do you think one could say the chances of any woman having a boy would be 1/5? Explain your answer.
An occupational health study was carried out to evaluate the health status of workers. The response is forced expiratory volume (FEV), a measure of respiratory function.
Test the proportions of yellow fire trucks have a significantly lower accident rate.
According to a recent poll, 53% of Americans would vote for an incumbent president. If a sample of 100 people results in 45% who would vote for the incumbent, test the claim that the percentage is 53%. Use a .10 significance level.
Here are numbers of right identifications by 24 children in Active group: 24 children in Passive group had these counts of correct identifications: Is there good evidence which active learning is superior to passive learning?
For population with mean of µ=60 and a standard deviation of s=24. Determine the z score corresponding to each of following samples.
A recent study found that the average life expectancy of a person living in Africa is 53 years with a standard deviation of 7.5 years. If a person in Africa is selected at random
By letting the period be one month, one has D = 100, Cu = 2.5, Ch= 0.50, Cr = 3.50, Cs= 0.20 and L = 0.75. What is the optimal inventory policy and the total cost of the system under the optimal policy?
Assuming that the data is normally distributed and the sample size is greater than 30, calculate the critical values for a two tailed and a one-tailed test when alpha = 0.05
It is believed that population standard deviation is 15 days. If test is conducted using a 0.05 level of significance, what conclusion must be reached?
Think of a case in which regression analysis was used, but not properly. For instance, discuss situations in which regression analysis is not appropriate and does not add useful information to our understanding of a set of data.
Randomly selected statistics students were given five seconds to estimate the value of a product of numbers with a summary of the results of both groups given below.
Find out the value of test statistic utilizing one sample proportion testing. Use the subsequent information for the below questions.
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