Can you help me with statistic questions?
*The t-distribution can be used with small samples for establishing confidence intervals for the population mean, provided that the population distribution_______ (A) has a known variance (B) is normally distributed (c) is symmetric (D) is continuous
*A store manager found that 20 of his 50 ties in stock are striped. What is the probability that a random selection of a tie to show a customer will be striped?_______ (A) 0 (B) 0.2 (C) 0.4 (D) 0.5
*Data that are truly integer in nature usually result from all of the following procedures except ______? (A) counting specific values of observations (B) ranking the values of observations (C) labeling categories of observations (D) rating the performances of observations
*Which of the following statement is true? ____ (A) statistics are used to estimate the values of population parameters (B) statistics describe the characteristics of populations (C) Parameters are used to describe the behavior of samples (D) statistics calculated from sample data are unrelated to the parameters of interest.
This solution answers and explains multiple choice basic statistics questions.