Hello, I am struggling with these question is a activity that have 45 questions, but this are the ones that I don't know why I can't get them right. Thank you an advance.
2. [2.4/3 Points] DETAILS PREVIOUS ANSWERS MENDSTAT14 5.E.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Let x be a binomial random variable with n = 5, p = 0.3. Find the following values. (Round your answers to three decimal places.) (a) P(x = 4) P(x = 4) = 0.0283 (b) P(x 5 1 ) P(x S 1) = 0.5282 ( c) P (x > 1 ) P(x > 1) = X (d) u = np H = 1.5 (e) o = vnpq O = 1.0247 You may need to use the appropriate appendix table or technology to answer this question.7. [1 I3 Points] PREVIOUS ANSWERS MENDSTAT145.E.034. MY NOTES ' l ASKYOUR TEACHER l ' PRACTICE ANOTHER According to the Humane Society of the United States, there are approximately 77.5 million owned dogs in the United States, and approximately 40% of all U.S. households own at least one dogJ' Suppose that the 40% figure is correct and that 15 households are randomly selected for a pet ownership survey. (a) What is the probability that exactly seven of the households have at least one dog? (Round your answer to three decimal places.) S (b) What is the probability that at most six of the households have at least one dog? (Round your answer to three decimal places.) 2066 x (c) What is the probability that more than 10 households have at least one dog? (Round your answer to three decimal places.) ,0093 You may need to use the appropriate appendix table or technology to answer this question. Submit Answe r 8. [2.25/3 Points] DETAILS PREVIOUS ANSWERS MENDSTAT14 5.E.038. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider a Poisson random variable with u = 0.8. Use Table 2 in Appendix I to find the following probabilities. (Round your answers to three decimal places.) (a) P ( x = 0 ) 449 (b) P (x 5 1) .809 ) P(x > 1) 191 (d) P(1 5 x 5 4) 541 X12. [-/5 Points] DETAILS MENDSTAT14 5.E.053. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Let x be a hypergeometric random variable with N = 15, n = 3, and M = 5. (a) Calculate p(0), p(1), p(2), and p(3). (Round your answers to two decimal places.) P(0) = p(1) = P(2) = p(3) = (b) Construct the probability histogram for x. p(x) P(x) 0.5 p(x) 0.5 0.4 0.4 0.3 0.3 0.3 0.2 0.2 0.2 0.1 0.1 0.1 O 0 1 X 2 3 0 1 X 2 3 0 1 X 2 3 A P(X) 0.4 0.3 0.2 0.1(c) Use the formulas below to calculate p = E(x) and 2. (Round your answer for p to one decimal place and your answer for 0'2 to five decimal places.) =4\") \" W \"=%%X\"LMXZ:D L; (d) What proportion of the population of measurements fall into the interval (14 i 20)? (Round your answer to two decimal places.) E What proportion of the population of measurements fall into the interval (.14 i 30)? (Round your answer to two decimal places.) E Do these results agree with those given by Tchebyshef'f's Theorem7 0 yes 0 no N l 14. [DIS Points] PREVIOUS ANSWERS MENDSTAT14 5.E.058. MY NOTES ' | ASK YOUR TEACHER l ' PRACTICE ANOTHER Seeds are often treated with a fungicide for protection in pooradraining, wet environments. In a smallascale trial prior to a largeascale experiment to determine what dilution of the fungicide to apply, six treated seeds and three untreated seeds were planted in clay soil and the number of plants emerging from the treated and untreated seeds were recorded. Suppose the dilution was not effective and only four plants emerged. Let x represent the number of plants that emerged from treated seeds. (Round your answers to three decimal places.) (a) Find the probability that x = 4 _x (b) Find PO! 5 3). x (c) Find PO 5 x i 3). x 18. [-I3 Points] MENDSTAT14 51.075. MY NOTES | | ASK YOUR TEACHER | I PRACTICE ANOTHER The alleles for black (B) and white (b) feather color in chickens show incomplete dominance; individuals with the gene pair Bb have "blue" feathers. When one individual that is homozygous dominant (BB) for this trait is mated with an individual that is homozygous recessive (bb) for this trait, 1/2 will carry the gene pair Bb. Letx be the number of chicks with "blue" feathers in a sample of n : 15 chicks resulting from this type of cross. (a) Does the random variable x have a binomial distribution? If not, why not? If so, what are the values of n and p? 0 Yes, x has a binomial distribution with n = 15 and p = 0.25. 0 Yes, x has a binomial distribution with n = 15 and p = 0.5. 0 Yes, x has a binomial distribution with n = 2 and p = 0.25. O No, X does not have a binomial distribution because the probabilities of having "blue" feathers is not the same as the probabilities of having black or white feathers. O No, X does not have a binomial distribution because the trials are not independent. (b) What is the mean number of chicks with "blue" feathers in the sample? (c) What is the probability of observing fewer than nine chicks with "blue" feathers? (Round your answer to three decimal places.) S (d) What is the probability that the number of chich with "blue" feathers is greater than or equal to 10 but less than or equal to 13? (Round your answer to three decimal places.) Z You may need to use the appropriate appendlx table or technology to answer this question. 20. [-13 Points] MENDSTAT14 5.E.083. MY NOTES | ASKYOURTEACHER H PRACTICEANOTHER A procedure often used to control the quality of nameibrand food products utilizes a panel of six "tasters." Each member of the panel tastes three samples, two of which are from batches of the product known to have the desired taste and the other from the latest batch. Each taster selects the sample that is different from the other two. Assume that the latest batch does have the desired taste, and that there is no communication between the tasters. (a) If the latest batch tastes the same as the other two batches, what is the probability that the taster picks it as the one that is different? (Enter your probability as a fraction.) :l (b) What is the probability that exactly two of the tasters picks the latest batch as different? (Round your answer to three decimal places.) :I (c) What is the probability that at least one of the tasters picks the latest batch as different? (Round your answer to three decimal places.) :I You may need to use technology to answer this question. 22. [0/3 Points] DETAILS PREVIOUS ANSWERS MENDSTAT14 5.E.090. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A West Coast university has found that about 80% of its accepted applicants for enrollment in the freshman class will actually enroll. In 2012, 1359 applicants were accepted to the university. Within what limits would you expect to find the size of the freshman class at this university in the fall of 2012? (Round your answers to the nearest whole number.) lower limit X freshmen upper limit 1043 x freshmen Submit
