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Author Question: The amount of corn chips dispensed into a 10-ounce bag by the dispensing machine has been identified ... (Read 100 times)

bio_gurl

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on: Jul 24, 2018
The amount of corn chips dispensed into a 10-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 10.5 ounces and a standard deviation of 0.1 ounce.
 
  Suppose 400 bags of chips were randomly selected from this dispensing machine. Find the probability that the sample mean weight of these 400 bags exceeded 10.6 ounces. A) approximately 0 B) 0.1915 C) 0.3085 D) 0.6915

Question 2

The number of violent crimes committed in a day possesses a distribution with a mean of 2.3 crimes per day and a standard deviation of 2 crimes per day.
 
  A random sample of 100 days was observed, and the mean number of crimes for the sample was calculated. Describe the sampling distribution of the sample mean. A) approximately normal with mean = 2.3 and standard deviation = 0.2
  B) approximately normal with mean = 2.3 and standard deviation = 2
  C) shape unknown with mean = 2.3 and standard deviation = 2
  D) shape unknown with mean = 2.3 and standard deviation = 0.2


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Brummell1998

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Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

A


bio_gurl

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Reply 2 on: Jul 24, 2018
Wow, this really help

yeungji

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Reply 3 on: Yesterday
Excellent

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