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marshall27 [118]
3 years ago
13

Suppose a researcher examined a relationship between taking aspirin every day (yes/no) and the incidence of a heart attack (yes/

no). The sample data showed that those taking aspirin had a lower chance of incidence of heart attack. A chi-square test on the data collected resulted in a p-value less than 0.0001. The data were collected in a well-designed randomized experiment. Which of the following conclusions is appropriate
A. Yes, because aspirin uses had a larger heart attack rate in both studies.
B. No, only researcher 1 can conclude this.
C. Yes, because aspirin is known to reduce heart attacks
Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

C . Yes, because aspirin is known to reduce heart attacks.

Step-by-step explanation:

A research examined so he find that aspirin reduce the heart attack .A chi-square test on the data collected in a randomized experiment.

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Answer:

232 cars

Step-by-step explanation:

Let's say the number of cars that entered is c.

At 9:00 am, there are a total of 24 + c cars and 64 trucks. We know that this value of 64 represents 1/5 of the total number of vehicles. The total number of vehicles is (24 + c) + 64 = 88 + c. So, we have:

64/(88 + c) = 1/5

Cross-multiply:

88 + c = 64 * 5 = 320

c = 320 - 88 = 232

Thus, the answer is 232 cars.

Note: as 232 doesn't show up in the answer choices, it's possible that the problem was copied correctly.

<em>~ an aesthetics lover</em>

6 0
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i

Step-by-step explanation:

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