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A bottling company fills bottles with a mean of 500 mL of liquid, with a standard deviation of 2 mL. Quality control randomly samples 20 bottles at a time. Consider the mean volume of liquid in the sample bottles. What is the mean of the sampling distribution of this sample mean?
Heights of men on a baseball team have a bell-shaped distribution with a mean of 177cm and a standard deviation of 5cm. Using the empirical rule, what is the approximate percentage of the men between the following values?
phone calls arrive at the rate of 48 per hour at the desk for regional airways1 compute t he probability of recieving
During the last week of the semester , students at a certain college spends on the average 4.2 hours using the school's computer terminals with a standard deviation of 1.8 hours .for a random sampling of 36 students at that collage.
a if fx is the probability density function pdf of a continuous random variable xwhat two conditions must be satised ?b
are 14 of mampm candies yellow? mars claims that 14 of its plained candies are yellow and a sample of 100 such candies
The scatterplot shows the relationship between economic status measured as a percentage of children in a neighborhood receiving reduced-fee lunch at school and the percentage of bike riders in the neighborhood wearing helmets.
Given that alarm has just sounded, find out the probability that real emergency situation exists?
a prize is hidden at random behind one of three doors. if you pick the correct door you get the prize that is behind
Assume rivets are defective independently of one another, each with the same probability. If 24% of all seams need reworking, determine the probability that rivet is defective?
1. signatures to a petition were collected on 676 sheets. each sheet has enough space for 42 signatures but on many
out of a total of 10 college textbooks estimate the standard deviation of their ages if the oldest textbook is known
in the game of keno if you make a 1 bet on a pair of numbers you have a 94 chance of losing and thus losing your one
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