Help me asap Help me asap hiS Ql2: 14 pts possibl ltthe 1980s it was generally b
ID: 3375897 • Letter: H
Question
Help me asap Help me asap hiS Ql2: 14 pts possibl ltthe 1980s it was generally believed that co genital abnormalities affected about 7% of a large nation's children. Some people believe that the i rease in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. A recent study examined 353 randomly selected children and found that 44 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 easonable evidence Complete parts a through f. a) Write appropriate hypotheses Let p be the proportion of chidren with genetic abnormalities. Choose OA, Ho'pe0.1246 vs. Ha: p#01246 ??. ??-?#007 vs. HA, p>0.07 OE. Ho P 0.1246 vs. HA P 0.1246 b) Check the necessary assumptions. Which of the following are satisfied? Select all that apply the correct answer below O B. Ho, p=0.1246 vs. Ha:p>0.1246 OD. Ho:p:0.07 vs. HA:p#0.07 OF. H P-007 vs. H p0.07 A. The data are independent. B. Less than 10% of the population was sampled. C. There are more than 10 successes and 10 failures. D. The sample is random. c) Compute the test statistic z- (Round to two decimal places as needed.) Find the P-value. P-value = d) Explain carefully what the P-value means in this context. Choose the correct answer below Click to select your answer(s). Round to three decimal places as needed.) 2Explanation / Answer
The statistical software output for this problem is:
One sample proportion summary hypothesis test:
p : Proportion of successes
H0 : p = 0.07
HA : p > 0.07
Hypothesis test results:
Hence,
a) Hypotheses: Option C is correct.
b) All of the assumptions are correct.
c) z = 4.02
P-value = 0.000
d) Option B is correct.
e) Option A is correct.
f) Option B is correct.
Proportion Count Total Sample Prop. Std. Err. Z-Stat P-value p 44 353 0.12464589 0.013580105 4.0239667 <0.0001Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.