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- * O t^(6)/36 O t^(5)/24 O None of them O t^(4)/6If X~N(2,9), compute a. P(X>=2) b. P(1<=X<7) c. P(-2.5<=X<=-1) d. P(-3<=X-2<3)Suppose insurance agency services customers who have both a homeowner’s policy and an automobile policy. For each type of policy, a deductible amount must be specified. For an automobile policy, the choices are TZS100 and TZS250, whereas for a homeowner’s policy, the choices are 0, TZS100, and TZS200. Suppose also that an individual is selected at random from the agency’s files. Let X = his deductible amount on the auto policy and Y = his deductible amount on the homeowner’s policy (a) What are the possible (X, Y) pairs? (b) Suppose the joint probability mass function is given by the insurance company in the accompanying joint probability in the following Table Table: Discrete Joint Probability Distribution for X and Y P(x,y) 0 100 200 X 100 0.2 0.10 0.2 250 0.05 0.15 0.3 What is p (100, 100) What is P (Y greater than 100)?
- A bouncy ball is dropped from a height of 2 metres onto a concrete floor. After hitting the floor, the ball rebounds back up to 80% of it's previous height, and this pattern continues on repeatedly, until coming to rest. (a) Show that the total distance travelled by the ball until coming to rest can be expressed by 2+4(0.8) + 4(0.8)² + 4(0.8)* + -- (b) Find an expression for the total distance travelled by the ball, in terms of the number of bounces, n. (c) Find the total distance travelled by the ballSuppose that a researcher, by using a sample of transactions of residential houses, wants to estimate how the price of the houses is affected by the absence of an elevator in the building. To this end, he regresses the price of the house in thousands euro, price, on the dummy no_elevator indicating the absence of the elevator (dummy equal to 1) or the presence (dummy equal to 0): price; = a0 +a1 no_elevator; + u; The OLS estimates are (standard errors in round brackets below the corresponding coefficient): R2 = 0.036 price; = 199.937 - 73.068 no_elevator; (10.735) (5.482) The poor fit of the model suggests the researcher to insert an additional regressor, namely the surface of the houses, area, in square meters. Supposing that area and no_elevator are negatively correlated, what do you think will happen to the previously estimated coefficient of no_elevator? O (a) We cannot say given the so poor fit of the model O (b) It will be larger than -73.068 (i.e. -30) O (c) It will be smaller…Suppose that a researcher, by using a sample of transactions of residential houses, wants to estimate how the price of the houses is affected by the absence of an elevator in the building. To this end, he regresses the price of the house in thousands euro, price, on the dummy no_elevator indicating the absence of the elevator (dummy equal to 1) or the presence (dummy equal to 0): price; = a0 +a1 no_elevator; + u; The OLS estimates are (standard errors in round brackets below the corresponding coefficient): price; = 199.937 – 73.068 no_elevator; (5.482) R2 = 0.036 (10.735) Unfortunately, he makes an informatic mistake so that he uses the original dummy adding a value of 2, i.e. a variable that takes value 3 if there is not an elevator in the building and 2 if there is. How will the estimated value of the coefficients be affected by this mistake? O (a) The intercept will increase whereas the coefficient of the dummy will decrease O (b) The intercept will increase whereas the coefficient…
- The question is what parts a,b,c are in thr picture attached below. The last digit of the student ID is 9.Supp_ose that th_e flood du_ration (in days) at a s_pecific city foll_o_ws the ex_ponen_tial d-istribu_tion wit_h mean 4 days. Fin_d the prob that the d+uration of a parti+cular floo_d in this city is NOTgrea_ter than the m_ean by one sta_nda_rd devi-ati_on.Do Homework- Kaitlyn Stringfellow - Google Chrome sec mathxl.com/Student/PlayerHomework.aspx?homeworkld=554737735&questionld=20&flushed-true&cld=58665538centerwin-Dyes Math 2843(003) Statistics Spring 2020 Kaitlyn Stringfellow | 02/24/209:40 PM Out Homework: Homework 5 Save sti Score: 0 of 1 pt 24 of 34 (20 complete)▼ HW Score: 54.84%, 18.65 of 34 pts EQuestion Help 3.2.33 A certain group of test subjects had pulse rates with a mean of 81.3 beats per minute and a standard deviation of 12.5 beats per minute. Use the range rule of thumb to identify the limits separating values that are significantly low.or significantly high. Is a pulse rate of 116.3 beats per minute significantly low or significantly high? Significantly low values are (Type an integer or a decimal. Do not round.) beats minute or lower. per Enter your answer in the answer box and then click Check Answer! Clear All parts remaining
- A batmons scors exactly a century by betting. fours, and Sixes on 20 consecutive ballso many different ways I'm how can be do it of Bome balls may not yield suns at the order of boundaries and one boundaries. tapen mto alcont.}If the user has not entered a valid password but has paid the subscription fee, then access is granted. Multiple Choice (P^n)→q (pvn) →q 9- (pvn) 9→ (P^1)'27 A2: Express as a fraction with no indices. Im