15) A skeptical paranormal claims that the proportion of Americans that have see

Question

15) A skeptical paranormal claims that the proportion of Americans that have seen a UFO, that a hypothesis test of the claim has been to reject the null hypothesis, state the conclusion in in every ten thousand. Assuming 15) nontechnical terms. s sufficient evidence to support the claim that the true proportion is thousand. in ten thousand. ten thousand. ten thousand less than 2 in ten B) There is not sufficient evidenoe to support the dlaim that the true proportian is grea O There is suficient evidence D) There is not sufficient evidence to support the claim that the true to support the claim that the true proportion is greater than 2 in proportion is less than 2 in Find the P-value for the indicated hypothesis test. 16) A medical school claims that more than 28% of its students plan to go int found that among a random sample of 130 of the general practice. Find the P-value for a test of the school's claim. school's students,32% of them plan to go into A) 0.3078 D) 0.1539 B) 0.1635 0.3461 17 17) In a sample of 47 adults selected to a particular strain of randomly from one town, it is found that 9 of them have been the flu. Find the P-value for a test of the claim that the proportion one of all adults in the town that have been exposed to this strain of the flu is 8% D) 00262 A) 0.0024 B) 00048 90524 18) 18) An article in aoumal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher foe fathers in the town of Littleton. A random sample ot 225 fathers from Littleton, yielded 97 who did not help with child care. Find the P-value for a test of the researchers claim. D) 0.0038 O 0.0019 booked on its flights is less than 6%. Of 380 C 0.1492 A) 0.0529 B) 0.0015 19) 19) An airline claims that the no-show rate for passengers randomly selected reservations, 18 were no-shows. Find the P-value for a test of the airline's claim. D) 0.3508 A) 0.0746 B) 0.1230 20) 20) Find the P-value for a test of the claim that less than 50% of the people following a particular diet will experience increased energy. Or 100 randomly selected subjects who followed the diet, 47 noticed an increase in their energy level. B) 0.2743 0.2257 D) 0.5486 A) 0.7257

Explanation / Answer

Solution:-
15) option D) There is not sufficient evidence to support the claim that the true proportion is less that 2 in ten thousand.

16) option B) 0.1635

17) option B) 0.0048

Explanation:- n=47 z-statistic = (9/47-0.080)/(0.08*0.92/47)=2.817

p-value = P(|Z|>2.817)=0.0048
18) option C) 0.0019

19) option B) 0.1492

20) option B) 0.2743

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