It the 1980s, it was generally believed that congenital abnormalities affected about 7% of a large nation's children. Some people believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. A recent study examined 436 randomly selected children and found that 39 of them showed signs of an abnormality. Is this strong evidence that the risk has increased? (We consider a P-value of around 5% to represent reasonable evidence.) Complete parts a through f. Assume the independence assumption is met. a) Write appropriate hypotheses. Let p be the proportion of children with genetic abnormalities. Choose the correct answer below. OA. Ho: p=0.0894 vs. HA: p > 0.0894 OC. Ho: p=0.0894 vs. HA: P# 0.0894 O E. Ho: p=0.07 vs. HA: P# 0.07 C. The independence assumption is satisfied. D. The sample is random. Ho: p=0.07 vs. HA: P<0.07 b) Check the necessary assumptions. Which of the following are satisfied? Select all that apply. A. There are more than 10 successes and 10 failures. B. Less than 10% of the population was sampled. c) Perform the mechanics of the test. What is the P-value? (Round to three decimal places as needed.) B. Ho: p=0.07 vs. HA: p>0.07 D. P-value= Ho: p=0.0894 vs. HA: p<0.0894 F.
It the 1980s, it was generally believed that congenital abnormalities affected about 7% of a large nation's children. Some people believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. A recent study examined 436 randomly selected children and found that 39 of them showed signs of an abnormality. Is this strong evidence that the risk has increased? (We consider a P-value of around 5% to represent reasonable evidence.) Complete parts a through f. Assume the independence assumption is met. a) Write appropriate hypotheses. Let p be the proportion of children with genetic abnormalities. Choose the correct answer below. OA. Ho: p=0.0894 vs. HA: p > 0.0894 OC. Ho: p=0.0894 vs. HA: P# 0.0894 O E. Ho: p=0.07 vs. HA: P# 0.07 C. The independence assumption is satisfied. D. The sample is random. Ho: p=0.07 vs. HA: P<0.07 b) Check the necessary assumptions. Which of the following are satisfied? Select all that apply. A. There are more than 10 successes and 10 failures. B. Less than 10% of the population was sampled. c) Perform the mechanics of the test. What is the P-value? (Round to three decimal places as needed.) B. Ho: p=0.07 vs. HA: p>0.07 D. P-value= Ho: p=0.0894 vs. HA: p<0.0894 F.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:It the 1980s, it was generally believed that congenital abnormalities affected about 7% of a large nation's children. Some
people believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of
abnormalities. A recent study examined 436 randomly selected children and found that 39 of them showed signs of an
abnormality. Is this strong evidence that the risk has increased? (We consider a P-value of around 5% to represent
reasonable evidence.) Complete parts a through f. Assume the independence assumption is met.
a) Write appropriate hypotheses. Let p be the proportion of children with genetic abnormalities. Choose the correct
answer below.
B. Ho: p=0.07 vs. HA: p > 0.07
D. Ho: p=0.0894 vs. HA: p<0.0894
Ho: p=0.07 vs. HA: P<0.07
F.
b) Check the necessary assumptions. Which of the following are satisfied? Select all that apply.
A. There are more than 10 successes and 10 failures.
B. Less than 10% of the population was sampled.
C. The independence assumption is satisfied.
D. The sample is random.
c) Perform the mechanics of the test. What is the P-value?
(Round to three decimal places as needed.)
Save
OA. Ho: p=0.0894 vs. HA: p > 0.0894
OC. Ho: p=0.0894 vs. HA: P# 0.0894
OE. Ho: p=0.07 vs. HA: P# 0.07
P-value =
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