Binomial Random Variables A survey of 933 Intro Stat students produced the following results. Frequency table...
Binomial Random Variables
A survey of 933 Intro Stat students produced the following results.
Frequency table Count = 933
|
Tattoos |
Frequency |
|
No |
700 |
|
Yes |
233 |
- What is the probability that an Intro Stat student has a tattoo?
- 0.20
- Suppose we take a random sample of 15 students taking
Introductory Statistics this semester and observe the number who
have tattoos. Let X = # of students with tattoos observed out of
the 15 students
- What are the possible values of X?
- X has a binomial distribution with parameters n and p. What are the parameter values?
- What is the probability that exactly 4 of the 15 students have tattoos? 0.188
- What is the probability that none of the 15 students have tattoos?0.46
- What is the probability that at least one of the 15 students have a tattoo?
- Calculate the average number of students having tattoos that we would expect for this sample.
- Calculate the standard deviation for the number of students having tattoos.
- What would be considered an unusually high number of students having tattoos in this sample of 15 students?
Homework Answers
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Binomial Random Variables
A survey of 933 Intro Stat students produced the following
results.
Frequency table...
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Part Two. Can you help me with the binomial probability
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Please show all steps to understand better. Thank you in
advance.
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QUESTION 29 In the following binomial situation, identify n. "In a ational survey, 3 of 10 college students admit to having tried marijuana. What is the probability that 15 college students in a local sample of 60 have tried it?" OA.n.. 10 OC, n= 60 OD, n = 15
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QUESTION 28 Using the Binomial Probability table, find PCX) when n 7, X <3, and p 0.5 O A. 0.273 O B. 0.500 ° C. 0.227 O D.0.773 QUESTION 29 In the following binomial situation, identify n. "In a national survey, 3 of 10 college students admit to having tried marijuana. What is the probability that 15 college students in a local sample of 60 have tried it?" O A. n 10 O C. n- 60 OD, n= 15
Part Two. Can you help me with the binomial probability
distribution? Please see instructions below.
Please show all steps to understand better. Thank you in
advance.
5. Use the binomial distribution table to find the binomial probabilities for these cases: a) n=10, p=1, k= 3 b) n=14, p = 6, k = 7 c) n =25, p=5, k = 14 6. Consider a binomial experiment with n = 20 and p=0.70. Use the binomial formula to calculate: a) P(x =...
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