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In the year 2001 Youth Risk Behavior survey done by the US Centers for disease control, 747 out of 1168 female 12th graders said they always use a seatbelt when driving.
Construct a 95% confidence interval for the proportion of 12th grade females in the population who always use a seatbelt when driving.
the mean income per person in the united states is 40500 and the distribution of incomes follows a normal distribution.
During the course of a year, 38.0% of the 213 merchant ships lost were general cargo carriers, while 43.8% of the 219 ships lost during the following year were in this category.
Assume that the average life of a bulb is 1,000 hours and that this failure time follows the exponential distribution. What is the probability that a randomly selected bulb will last between 900 and 1200 hours? Round to four decimal places
for a given sample size when we increase the probability of type 1 error the probability of a type 2 error?a. remains
a study of fill volumes is conducted at a food canning factory to determine the level of consistency between the two
Give an example of a hypothesis test you could perform at a Surgery Center and what the hypotheses would be. State the null and alternative hypotheses in proper format.
If yields decrease, as a pension fund manager, what impact will you see on capital appreciation and reinvestment value?
Calculate the centerline and control limits for the X‾- and s-charts.- Estimate the process mean and standard deviation, assuming the process to be in control.
computing the probability values using normal distribution.the mean price of new homes from a sample of houses is
Listed below is a list of how long it takes for bands on stage to complete their first song (in seconds).
how large of a sample n would you need to estimate p with margin of error 0.01 with 95 confidence? use the guess p0.05
Test at the 2.5% significance level whether the variance of the particle diameters of all particles in 220-rated sandpaper is greater than 2.0 micrometers.
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