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The mean of a normal distribution probability is 400 pounds. The standard deviation is 10.
a. What is the area between 415 pounds and the mean of 400 pounds? (Round to 4 decimals)
b. What is the probability of selecting a value at random and discovering that it has a value less than 395 pounds. (Round to 4 decimals).
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Using a 5% level of significance, can we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?
would you favor or oppose providing a path to citizenship for illegal immigrants in the U.S if they met certain requirement including a waiting period, paying fines and back taxes, passing criminal background checks and learning English? What is the ..
A sample of 50 provided a sample mean of 14.15. The population standard deviation is 3.
In a poll of 1,004 adults, 93% indicated that restaurants and bars should refuse service to patrons who have had too much to drink. Construct the 90% confidence interval for the proportion of all adults who feel the identical way.
Let X1, ..., Xn be a random sample from a two-parameter exponential distribution, Xi ~ EXP (theta, eta). (a) Assuming it is known that eta = 150, find a pivotal quantity for the parameter theta based on the sufficient statistic.
At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.
What is the probability that an improperly adjusted machine will produce five or more items before it is stopped? What is the average number of items an improperly adjusted machine will produce before being stopped?
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
At a board meeting of 20 businessmen, all of whom wear ties, what is the probability that:
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
What is the OR of getting cancer fora late child birth woman compared to an early first birth woman?
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