The pandemic has affected many aspects of our lives, including manufacturing and delivery of many products. New cars use semiconductor chips, which are now in very short supply, causing the production of new cars to slow down and the prices to go up. Data collected on sale prices of new cars in the US during September 2021 was used to construct a 95% CI for
Read DetailsWe would like to estimate the average number of languages spoken by UF students. We believe the standard deviation is around 0.7. How large a sample would we need to take in order to estimate this average to within 0.1 of the truth with 95% confidence?
Read DetailsMost people these days own a smart phone, with iPhones being the most popular. How popular exactly? A study finds that, out of 146 UF students who do have a smart phone, 137 have an iPhone. If we want to construct a 95% confidence interval for the true proportion of UF students who own an iPhone, what should we use for our estimator?
Read Details¿Qué hicieron estas personas? Completa el párrafo con la forma correcta del pretérito del verbo entre paréntesis. Hoy yo (volver) _______ de la universidad a la una de la tarde. Me (hacer) _______ un sandwich y lo (comer) _______ delante de la televisión. Cuando (terminar) _______ , (empezar) _______ a meter la ropa sucia en la lavadora. Antes de salir para el trabajo, le (dar) _______ comida al perro. Por la mañana (ir) _______ a la clase de música, pero llegué tarde porque (acostarse) _______ a las 2 a.m. Atentamente, Raúl Bustamante
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