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22) Read the following and answer questions 22-26 In the 1980''s it was believed that congenital abnormalities affected about 5% of the nation''s children. Somepeople believe that an increase in the chemicals in the environment has led to an increase in the number of abnormalities. A recent study examined 384 randomly selected children and found that 23 of them showed signs of an abnormality. Does this provide evidence that the risk of congenital abnormalities has increase? Use ? = 0.05 to make your decision. What would the appropriate hypotheses be for this problem? A) H0 : p = 0.05; Ha : p > 0.05 B) H0 : p = 0.05; Ha : p not equal 0.05 C) H0 : p < 36; Ha : p > 36 D) H0 : p = 0.05; Ha : p < 0.05 23) What would the standard error be for this problem? A) 0.011122 B) 0.0133 C) 0.7911 D) 10^(-4) 24) What is the resulting test statistic? A) 0.89 B) 0.623 C) 0.712 D) -0.89 25) What is the resulting p-value? A) 0.1867 B) 0.224 C) 0.712 D) 0.1494 26) What is the appropriate conclusion? A) The p-value is greater than alpha. We DO NOT reject the null hypothesis. This DOES NOT provide evidence that the risk of congenital abnormalities has increased. B) The p-value is greater than alpha. We DO NOT reject the null hypothesis. This provides evidence that the risk of congenital abnormalities has increased. C) The p-value is smaller than alpha. We reject the null hypothesis. This DOES NOT provide evidence that the risk of congenital abnormalities has increased. D) The p-value is greater than alpha. We reject the null hypothesis. This provides evidence that the risk of congenital abnormalities has increased.

          22) Read the following and answer questions 22-26
In the 1980''s it was believed that congenital abnormalities affected about 5% of the nation''s children. Somepeople believe that an increase in the chemicals in the environment has led to an increase in the number of abnormalities. A recent study examined 384 randomly selected children and found that 23 of them showed signs of an abnormality. Does this provide evidence that the risk of congenital abnormalities has increase?
Use ? = 0.05 to make your decision.
What would the appropriate hypotheses be for this problem?
A) H0 : p = 0.05; Ha : p > 0.05
B) H0 : p = 0.05; Ha : p not equal 0.05
C) H0 : p < 36; Ha : p > 36
D) H0 : p = 0.05; Ha : p < 0.05

23) What would the standard error be for this problem?
A) 0.011122
B) 0.0133
C) 0.7911
D) 10^(-4)

24) What is the resulting test statistic?
A) 0.89
B) 0.623
C) 0.712
D) -0.89

25) What is the resulting p-value?
A) 0.1867
B) 0.224
C) 0.712
D) 0.1494

26) What is the appropriate conclusion?
A) The p-value is greater than alpha. We DO NOT reject the null hypothesis. This DOES NOT provide evidence that the risk of congenital abnormalities has increased.
B) The p-value is greater than alpha. We DO NOT reject the null hypothesis. This provides evidence that the risk of congenital abnormalities has increased.
C) The p-value is smaller than alpha. We reject the null hypothesis. This DOES NOT provide evidence that the risk of congenital abnormalities has increased.
D) The p-value is greater than alpha. We reject the null hypothesis. This provides evidence that the risk of congenital abnormalities has increased.

22) Read the following and answer questions 22-26
In the 1980”s it was believed that congenital abnormalities affected about 5% of the nation''s children. Somepeople believe that an increase in the chemicals in the environment has led to an increase in the number of abnormalities. A recent study examined 384 randomly selected children and found that 23 of them showed signs of an abnormality. Does this provide evidence that the risk of congenital abnormalities has increase?
Use ? = 0.05 to make your decision.
What would the appropriate hypotheses be for this problem?
A) H0 : p = 0.05; Ha : p > 0.05
B) H0 : p = 0.05; Ha : p not equal 0.05
C) H0 : p < 36; Ha : p > 36
D) H0 : p = 0.05; Ha : p < 0.05

23) What would the standard error be for this problem?
A) 0.011122
B) 0.0133
C) 0.7911
D) 10^(-4)

24) What is the resulting test statistic?
A) 0.89
B) 0.623
C) 0.712
D) -0.89

25) What is the resulting p-value?
A) 0.1867
B) 0.224
C) 0.712
D) 0.1494

26) What is the appropriate conclusion?
A) The p-value is greater than alpha. We DO NOT reject the null hypothesis. This DOES NOT provide evidence that the risk of congenital abnormalities has increased.
B) The p-value is greater than alpha. We DO NOT reject the null hypothesis. This provides evidence that the risk of congenital abnormalities has increased.
C) The p-value is smaller than alpha. We reject the null hypothesis. This DOES NOT provide evidence that the risk of congenital abnormalities has increased.
D) The p-value is greater than alpha. We reject the null hypothesis. This provides evidence that the risk of congenital abnormalities has increased.

Added by Ivan H.

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