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The weight of US Postal Service packages is normally distributed with a mean of 2 oz and a standard deviation of 0.5oz. If I choose two letters from my mail carriers bag, what is the probability that t hey will both weigh less that 1 oz ?
The table below describes the smoking habits of a group of asthma sufferers. If one of the 1036 subjects is randomly selected, find the probability that the person chosen is a nonsmoker given that it is a woman. Round to the nearest thousandth.
Consider a game where a person is given the choice between two envelopes both containing money but one envelope with double the amount in the other envelope.
suppose the average family of 4 washes 2000 lbs of laundry each year. assume the variable is normally distributed with
What percent of the twelfth-grade students who drive said that they always wear a seatbelt when driving?- What percent of the twelfth-grade students who drive said that they do not always wear a seatbelt when they drive?
Indicate with Yes or No whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile.
question assume that breast cancer affects .8 percent of the female population between 40 and 50 years of age. there
mars inc. claims that they produce mampms with the following distributions
Acid rain. Two researchers measured the pH (a scale on which a value of 7 is neutral and values below 7 are acidic) of water collected from rain and snow.
Causes of death In the United States in 2007, there were 631,636 deaths from heart disease, 559,888 from cancer, and 137,119 from stroke.
question 1current weekly demand forecast for an item follows a normal distribution with a mean of 100 units with a
Suppose that a chi-squared test is carried out, based on a random sample of n from a population, to assess whether or not two categorical variables.
Calculate the z-test statistic to test the difference in SAT math scores from students in Delaware and New jersey. A sample of 45 students from Delaware had an average score.
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