![subject](/tpl/images/cats/mat.png)
Mathematics, 11.10.2021 14:00 staffordkimberly
The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.942 g and a standard deviation of 0.317 g. The company that produces these cigarettes claims that it has now reduced the amount of nicotine. The supporting evidence consists of a sample of 42 cigarettes with a mean nicotine amount of 0.888 g.
Assuming that the given mean and standard deviation have NOT changed, find the probability of randomly selecting 42 cigarettes with a mean of 0.888 g or less.
P(M < 0.888 g) =
Enter your answer as a number accurate to 4 decimal places.
NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
Based on the result above, ¿is it valid to claim that the amount of nicotine is lower? (Let’s use a 5% cut-off for our definition of unusual.)
No. The probability of obtaining this data is high enough to have been a chance occurrence.
Yes. The probability of this data is unlikely to have occurred by chance alone.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:10
Convert 50 kilogram to pounds. (the conversion factor from kilogram to pound is 2.2046.) a. 52.2 lb. b. 110.2 lb. c. 22.6 lb. d. 47.8 lb.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:10
Which points are solutions to the linear inequality y < 0.5x + 2? check all that apply. (–3, –2) (–2, 1) (–1, –2) (–1, 2) (1, –2) (1, 2)
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?
Answers: 1
You know the right answer?
The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.94...
Questions
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 09.07.2019 13:50
![question](/tpl/images/cats/biologiya.png)
Biology, 09.07.2019 13:50
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 13:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 09.07.2019 13:50
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 13:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 13:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 13:50
![question](/tpl/images/cats/istoriya.png)
History, 09.07.2019 13:50
![question](/tpl/images/cats/fizika.png)
Physics, 09.07.2019 13:50
![question](/tpl/images/cats/istoriya.png)
History, 09.07.2019 13:50
![question](/tpl/images/cats/biologiya.png)
Biology, 09.07.2019 13:50
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 13:50
![question](/tpl/images/cats/istoriya.png)
History, 09.07.2019 13:50
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 13:50
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 13:50