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.com/Student/PlayerTest.aspx?testld-169415632&centerwin; rest 47 %C83 Sat 1:07 AM E F17 latestart M13A7_40492 Intro Statistics (T Th 3-5:15P) Test: Chapter 7 Exam This Question: 1 pt Submit Test 25 of 26 (1 complete) This Test: 26 pts possible A report claims that at most 72% o two-tailed. Explain your reasoning ung cancer deaths are due to tobacco use. State Ho and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is lef-tailed, righl-tailed, or O A. The null hypothesis expressed O B. The null hypothesis expressed in words is, "the proportion of all lung cancer in words is, "the proportion of all lung cancer deaths that are due to tobacco use is at least 0.72" The mull hypothesis is expressed symbolically as,"Hoi p072 at are due to tobacco use is at most 0.72. The null hypothesis is expressed symbolically as, "Ho: ps0.72. O C. The null hypothesis expressed in words is "the proportion o all lung cancer deaths that are due to tobacco use is not 072 The null hypothesis s expressed symbol by as Ho p#072 The null hypothesis expressed in words is, "the proportion of all lung cancer deaths that are due to tobacoo use is 0.72 The null hypothesis is expressed symbolically as, "Ho p 0.72 State the alternative hypothesis in words and in symbols. Choose the correct answer below. O A. The alternative hypothesis expressed in words is, "the proportion of all lung cancer deaths that are due to tobacco use is more than 0.72. The altenative hypothesis is expressed symbolically as, "Ha p>0.72." O B. The alternative hypothesis expressed in words is, "the proportion of all lung cancer deaths that are due to tobacco use is 0.72 The altenative hypothesis is expressed symbolically as, Hi p072 O C. The alternative hypothesis expressed in words is, "the proportion of all lung cancer deaths that are due to tobacco use is not 0.72 The aiternative hypothesis is expressed symbolically as, Hoi p 0.72 0 D. The alternative hypothesis expressed in words is the proportion of all lung cancer deaths that are due to tobacco use is less an 0.72 The aiter ative hypothesis is express s m a H p

Explanation / Answer

Solution:-

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: P < 0.72 (B) The proportion of lung cancer deaths that are due to tobacco use is atmost 0.72.
Alternative hypothesis: P > 0.72, (A) The proportion of lung cancer deaths that are due to tobacco use is more than 0.72.

The hypothesis test is right tailed because the null hypothesis contains smaller than equal to sign.

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