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Author Question: A recent survey found that 74 of all adults over 50 own cell phones. You randomly select 41 adults ... (Read 122 times)

Chloeellawright

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on: Jul 25, 2018
A recent survey found that 74 of all adults over 50 own cell phones. You randomly select 41 adults over 50, and ask if he or she owns a cell phone. Decide whether you can use the normal distribution to approximate the binomial distribution.
 
  If so, find the mean and standard deviation, If not, explain why. Round to the nearest hundredth when necessary.

Question 2

In the hypothesis tests for large and small sample means and differences between means, the left hand term in
  the numerator is always a population value.
 
  Indicate whether the statement is true or false


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fromAlphatoOmega22

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

use normal distribution,  = 30.34 and  = 2.81.

Answer to Question 2

FALSE


Chloeellawright

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Reply 2 on: Jul 25, 2018
Wow, this really help

apple

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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