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Author Question: Sales prices of baseball cards from the 1960s are known to possess a right skewed distribution with ... (Read 55 times)

mp14

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on: Jun 24, 2018
Sales prices of baseball cards from the 1960s are known to possess a right skewed distribution with a mean sale price of 5.25 and a standard deviation of 2.80. Suppose a random sample of 100 cards from the 1960s is selected. Describe the sampling distribution for the sample mean sale price of the selected cards.
 
  A) right skewed with a mean of 5.25 and a standard error of 0.28
  B) normal with a mean of 5.25 and a standard error of 2.80
  C) right skewed with a mean of 5.25 and a standard error of 2.80
  D) normal with a mean of 5.25 and a standard error of 0.28

Question 2

Current estimates suggest that 75 of the home-based computers in a foreign country have access to on-line services. Suppose 20 people with home-based computers were randomly and independently sampled. Find the probability that more than 9 of those sampled currently do not have access to on-line services.
 
  What will be an ideal response?


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ktidd

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

D

Answer to Question 2

0.0139


mp14

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Reply 2 on: Jun 24, 2018
Gracias!

diana chang

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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