Question

2 Mier (2o08y examined the energy drink consumptio thet overall levet of consumption for college undergr finds that students report consuming 2.2 drinks per d of SJFC students to the population value. What is th a) One sample z test b) One sample t test 3) A psychologist has prepared an "Optimism Test" tha college seniors. The test measures how each gradua higher the score the more optimistic the class. Last A sample of N -9 seniors from this year's class wa class was M-10 and the estimated standard deviatic statistical test? a) One sample z test b) One sample t test 4) Whic h of the following is NOT true of a normal distrib a) It is bell-shaped. b) It is theoretical in nature. c) It is symmetrical. d) It is empirically derived. 5) In a normal distribution, the a) Mean is usually greater than the mode b) Mean is usually less than the mode c) Median is greater than the mean and the mode d) Mean, median and mode are always equal e) Mean, median and mode are sometimes equal ) Sampling error refers to the extent to which mist analysis of data a) True False

Answer 1

• ANSWER-4.It is theoretical in nature is not a characteristic of normal distribution.
• Normal distributions are symmetric, unimodal, and asymptotic, and the mean, median, and mode are all equal. A normal distribution is perfectly symmetrical around its center. That is, the right side of the center is a mirror image of the left side. There is also only one mode, or peak, in a normal distribution.
• ANSWER-5.In a normal distribution,mean,median are always equal.
• Due to time limit,remaining questions can be asked as another question,please post the questions clearly with all the options for an appropriate answer,thankyou for your cooperation