Question

MIXED PERFECT TENSES 3 प 1 hape they (repair) this road by the time we come back next summer they thear about the film before you fold them about it Would you like something to eat?" No, thanks We already (eat) 1 (work) for several hours and I still not finished) Briget (wait) the whole week to see her hairdresser He spends all his spare time planting trees. He says that by the end of next year he (plant) 2,000 We got to the station late so the train already (leave) You (not lose) enough weight to fit into those trousers by next 6 your sister (study) in the library all afternoon 10 Come back in an hour I (do) my packing by then and we'll be able to have a talk 11. His father left him £10,000, but he lives so extravagantly that he (spend) it all before he's 30 12 It frain) all day! 13. By the time you called, I (already recover) from the accident (work) all day, but we're stepping now 15 He's (talk) to his girlfriend for over an hour That's the sixth phone call he (make) this evening 16 Jimmy (never be) to a concert until last week 17. He looks terrible How long he (be) in poor health? 18 (not finish) my meal yet. 19. When he reaches Land's End he (walk) 1.500 miles 20 you (own) this dog for a long time? 21. She (wait) for thirty minutes and the bus (not arrived) 22 Susie (wear) that ghastly dress at least twenty times now 23 1 (read) while she (see) the doctor 24. Jane (already leave) her husband when she met Josh 25 I'm trying to change my diet ! (not have) any fast food for at least a month 26 you (finish) that project by the appointed time? 27. She (eat) well for a long time before she became ill 28. In ten years' time, everyone (forget) about his book you (finish) baking the birthday cake before the guests arrive? 30. He is an expert in art history. He (work) in a museum for ten years and he loves his job 31. She's upset because she (not get) good marks at school. 32 By the time I got to the restaurant, it (already close) 33 Dan (catch) one cold after another 34 By the time be came home, the children (sleep) for hours 351 (try) to save money, but I haven't succeeded 36. He (work) for hours and the house is finally clean 37. We (finish) our preparations by the time the cooking competition begins​

Answer 1

Respuesta:

Error de estimación es el valor absoluto de la diferencia entre una estimación particular y el valor del parámetro. ... Los estimadores se usan cuando los parámetros que se incluyen en las fórmulas de los errores de estimación son desconocidos.

Explicación:

Error de estimación es el valor absoluto de la diferencia entre una estimación particular y el valor del parámetro. ... Los estimadores se usan cuando los parámetros que se incluyen en las fórmulas de los errores de estimación son desconocidos.