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Author Question: A state university found that it retained 25 students out of 352 in 2003 and 26 students out of 334 ... (Read 74 times)

karen

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on: Jul 25, 2018
A state university found that it retained 25 students out of 352 in 2003 and 26 students out of 334 in 2004. Construct a 90 confidence interval for the difference in the proportions of students retained in 2003 and 2004.
 
  A) -0.0535 to 0.0398 B) -0.0461 to 0.0325 C) -0.0585 to 0.0449 D) -0.0398 to 0.0262

Question 2

The annual precipitation for one city is normally distributed with a mean of 274 inches and a standard deviation of 3.9 inches. Fill in the blanks.
 
  In 95.44 of the years, the precipitation in this city is between ___ and ___ inches.
 
  A) 266.2, 281.8 B) 274, 281.8 C) 262.3, 274 D) 262.3, 285.7


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jazzlynnnnn

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Reply #1 on: Jul 25, 2018
Answer to Question 1

D

Answer to Question 2

A


karen

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Reply 2 on: Jul 25, 2018
Excellent

tkempin

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Reply 3 on: Yesterday
:D TYSM

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