What is the expectation (to 2 decimal places) of Y? ELY
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- Give as much information as you can about the P-value of a t test in each of the following situations. (Use technology to calculate the P-value. Round your answers to four decimal places.) USE SALT (a) two-tailed test, df = 7, t = 0.79 (b) upper-tailed test, df = 10, t = -0.70 (c) lower-tailed test, n = 20, t = -2.20 (d) lower-tailed test, n = 20, t = -5.30 (e) two-tailed test, n = 40, t = 1.50Which of the following statements regarding probabil ity is always correct? A A probability can range from 0 to 1. A probability close to 0 means the event is not likely to happen. A probability close to 1 means the event is like C ly to happen All the above are true. D2.) What is the yalue of E(X-1)" for scores ーメ)X 2,2,1,4
- (d) P(|Z|>0.7) = (Round to four decimal places as needed.) (e) P(- 1.1sZs1.2) = (Round to four decimal places as needed.)O Briefly decribe the difference be tween estimations and hygorhesis testing. (2)Assume that the probability of a boy being born is the same as the probability of a girl being born. Find the probability that a family with four children will (Enter your answer to four decimal places.) At least one girl Tor Scientific F-E MR M+ M- MS MY NOTES Trigonometry v Function v FIN12 7.4.017. nd e questions. If a student guesses at every answer, what is the probability that he or she will answer exactly 9 questions c mod 8. 6. 6. 10 log 1 1/- 0. 38 F Clear A In P Type here to search 2.
- The question is really interesting. Please explain how to solve such a question! Please an intuitive explanation for the answer. Thank you.The 2010 U.S. Census found the chance of a household being a certain size. The data is in the pmf below ("Households by age," 2013). Let X be the number (size) in a household. E(X) = k·P(X = k) 7 (or more) P(X=k) 0.267 0.336 0.158 0.137 0.063 0.024 0.015 k 1 2 3 5 6 a) The probability of a household size being more than 5, P(X > 5) = % b) In the long run, we are expected to see a household size of, E(X)= on average. Round answer to three decimal places. c) The probability that the size of a household is equal to two is %. d) The probability of a household size being three OR six is %.Calculate the following probabilities: 1. P(16
